OreSat0 flight unit on a white stand: a cube of purple circuit-board panels with black corner rails
PSAS / Oregon State

OreSat

OreSat is an open-source CubeSat built from circuit cards held in a machined aluminium frame.

Platforms and buses
Product IDoresat
Size
1U to 3U
Frame material
6061-T6 aluminium, Type II anodized (black)
Frame stock
15 mm plate, machinable on a 3-axis mill
Solar module
2 Spectrolab XTE-SF cells, 2.34 Wpk per module
Battery pack
Two 2S1P Li-ion 18650 packs on one card, 7.2 V at 5.2 Ah
Data bus
1 Mbps CAN

In short

OreSat is a CubeSat design from PSAS and Oregon State that scales from 1U to 3U. Its structure, electronics and software are public on GitHub, so anyone can read how a small satellite is put together. Each subsystem is one or more circuit cards, held in an aluminium frame like cards in a cage.

Students can machine the frames themselves on a three-axis mill, from 15 mm plate of 6061-T6 aluminium. The frames are anodised black, which grows an oxide layer on the metal. That layer passes heat between cards and frame but not electricity. The team has flown its gallium arsenide solar design and is working on a silicon one.

Application

An open-source CubeSat bus whose structure, electronics and software are public on GitHub. Anyone can read how a real small satellite is built, down to the frame alloy, circuit-board stack and solar modules, which makes it a useful reference for teams and students.

How it is built

Frame and clamps

The frames and the wedge clamps that hold each card are both 6061-T6 aluminium, anodised black. Where an antenna card must be grounded to the frame, the anodising is masked off and Alodine 1201 coating goes on instead. The structure is held together with stainless steel 18-8 Torx screws, sizes M2 and M2.5.

  • 1U +X frame
  • Card wedge (card clamp)
  • Electrical-ground contact patches on frames
  • Structure fasteners (programme standard)

The backplane

The backplane is the circuit board that the cards connect to. It carries a 1 Mbps CAN data bus and radio connectors. A ring of bare copper on its back touches the anodised frame to pass heat. Shoulder bolts hold it loosely enough to flex, because aluminium and circuit board expand by different amounts.

  • Back-side thermal ring
  • Backplane locating shoulder bolt
  • Backplane grounding to frame

Circuit boards

The main circuit boards have four layers and are 1.59 mm thick. Several call for Isola FR408HR laminate or an equivalent. The assembly notes insist on leaded solder paste for most cards, and the boards get no conformal coating, a protective film over the circuits.

  • PCB laminate core
  • PCB laminate prepreg
  • Outer copper foil
  • Solder paste
  • Conformal coating

Solar modules

Each 1U carries four solar modules, one per side face. A module has two Spectrolab XTE-SF cells and peaks at 2.34 W. Cells are placed by hand and stuck down with pressure-sensitive adhesive. Each module has its own maximum power point tracker, a circuit that keeps the cells at their best operating point.

  • Solar cell (SpectraLabs XTE-SF, 2 per module)
  • Solar cell attachment

Battery card

The battery card holds four Tenergy 18650 lithium-ion cells in a 3D-printed nylon holder, wired as two packs for 7.2 V at 5.2 Ah. Polyimide heater tapes keep the cells above 0 °C. Hardware circuits guard against overcharge, overdischarge and overcurrent, and the card has inhibit and shutdown switches.

  • 18650 cell (Tenergy, 4 per card)
  • Cell holder
  • Polyimide thermofoil heater (Minco, 2 per card)
  • Switch (battery inhibit and shutdown, Aratas/Omron D2F)
Where the parts areNumber of parts we have listed in each group
  • C3 card: electronic components (25 most significant of the BOM)25
  • Solar module: electronic components (25 most significant of the schematic)25
  • Battery card: electronic components (25 most significant of the schematic)25
  • Battery card: cells, holder, heaters, PCB and assembly materials16
  • Solar module (1U GaAs + MCXN): cells, PCB and assembly materials12
  • Frame, card clamps and mechanical parts11
  • C3 card: PCB laminate, finish and assembly materials11
  • Fasteners and COTS mechanical hardware10
  • Backplane: PCB laminate, finish and assembly materials10
  • End card and end cap (OreSat1 +Z): PCB and assembly materials9

What it is made of

  • Aluminium 6061-T6

    Frames, card clamps and the battery card's inhibit pin. Students can machine the frames from 15 mm plate.

  • Anodised aluminium

    The black Type II finish on frames and clamps. It passes heat between cards and frame but not electricity.

  • Alodine 1201

    Coating on patches where the anodising is masked off, so antenna cards can be grounded to the frame.

  • Gallium arsenide

    The cells in the solar modules, two Spectrolab XTE-SF cells per module.

  • Lithium-ion cells

    Four 18650 cells on the battery card.

  • Isola FR408HR

    Circuit-board laminate on several cards, including the backplane.

The materials by familyHow many of the parts that name a material use each one
  • Other41
  • Aluminium9
  • Copper9
  • Gold and silver6
  • Polyimide2
  • Polymers and foams1

How it connects to other things

PSAS and Oregon State keep OreSat's structure, electronics and software in separate GitHub repositories. The solar hardware is licensed as open hardware under CERN-OHL-S v2. Chip resistors come from Stackpole Electronics and ceramic capacitors from Murata Electronics. One flight unit, OreSat0, has an end cap marked Oregon's First Satellite.

Products that use the same materials

  • Icarus CubeSat

    AlbertaSat

    Aluminium alloy 6061Kapton HN polyimide filmGallium arsenideAluminium+1 more
    Where each one is used

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: Rails; Rails (material statement) and more.

    Kapton HN polyimide film. Here: Polyimide thermofoil heater (Minco, 2 per card); Heater tape. There: Lower-outgassing tape recommended for stricter projects.

    Gallium arsenide. Here: Solar cell (SpectraLabs XTE-SF, 2 per module); Solar cell technology. There: Solar cell type (paper).

    Aluminium. Here: Backplane grounding to frame. There: Hinge bodies (deployable solar panels); Hinge bodies (statement of material).

    Spectrolab XTE-SF cells. Here: Solar cell on module (programme summary). There: Solar cell (6 per panel, 6S1P).

  • CubeSat 101

    NASA CubeSat Launch Initiative

    CopperAluminium alloy 6061Anodized aluminiumLithium-Ion
    Where each one is used

    Copper. Here: Helical antenna (+Z end card); Outer copper foil and more. There: Cabling, etc. (template row 14).

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: CubeSat structure; CubeSat structure (template row 2, body type Box).

    Anodized aluminium. Here: 1U +X frame (anodize); Card wedge (anodize) and more. There: Rails (deployer interface rails).

    Lithium-Ion. Here: 18650 cell (Tenergy, 4 per card); Battery cell model (README). There: Electrical power storage.

  • NASA small spacecraft structures review

    NASA Ames

    CopperAluminium alloy 6061Anodized aluminiumCRP Windform SLS Nylon
    Where each one is used

    Copper. Here: Helical antenna (+Z end card); Outer copper foil and more. There: Frangibolt actuator cylinder.

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: EnduroSat 3U structure; ISISPACE 3U structure and more.

    Anodized aluminium. Here: 1U +X frame (anodize); Card wedge (anodize) and more. There: Dispenser-compatible rails.

    CRP Windform SLS Nylon. Here: Cell holder. There: RECS robotic arms (Naval Academy); KySat-2 / TANCREDO-1 printed parts.

  • Sparrow

    Blackwing Space

    Aluminium alloy 6061Lithium-IonGallium arsenide
    Where each one is used

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: Sparrow 1U Chassis; Sparrow 1U XL Chassis and more.

    Lithium-Ion. Here: 18650 cell (Tenergy, 4 per card); Battery cell model (README). There: Puffin battery pack (Puffin Pack); Draft power module cells (Li-ion or LiFePO4).

    Gallium arsenide. Here: Solar cell (SpectraLabs XTE-SF, 2 per module); Solar cell technology. There: Draft solar panel cells (triple-junction GaAs).

  • Kestrel

    Blackwing Space

    Aluminium alloy 6061Lithium-IonGallium arsenide
    Where each one is used

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: Kestrel 3U XL Chassis; Structure (all platforms table).

    Lithium-Ion. Here: 18650 cell (Tenergy, 4 per card); Battery cell model (README). There: Puffin battery pack (Puffin Pack); Draft power module cells (Li-ion or LiFePO4).

    Gallium arsenide. Here: Solar cell (SpectraLabs XTE-SF, 2 per module); Solar cell technology. There: Draft solar panel cells (triple-junction GaAs).

  • Osprey

    Blackwing Space

    Aluminium alloy 6061Lithium-IonGallium arsenide
    Where each one is used

    Aluminium alloy 6061. Here: 1U +X frame; Card wedge (card clamp) and more. There: Osprey 6U XL Chassis; Structure (all platforms table).

    Lithium-Ion. Here: 18650 cell (Tenergy, 4 per card); Battery cell model (README). There: Puffin battery pack (Puffin Pack); Draft power module cells (Li-ion or LiFePO4).

    Gallium arsenide. Here: Solar cell (SpectraLabs XTE-SF, 2 per module); Solar cell technology. There: Draft solar panel cells (triple-junction GaAs).

What we do not know

The team has not published a total mass for the satellite. The drawings call for Type II anodising but cite no specification, the solder paste is only called leaded, and the laminate for the solar and battery cards is left unspecified.

The detailed data

What is written above is built from these numbers and quotes. Each row links to the page it was taken from. Get all of it as JSON, or ask our MCP server.

Features

  • Card-cage bus: one or more cards per subsystem
  • Each solar module has its own true MPPT
  • Solar modules thermally connected to the frame
  • Backplane uses CAN, SMPM RF connectors and microstrips
  • Hardware overcharge, overdischarge and overcurrent protection on battery card
  • Battery card has inhibit switches and shutdown switches
  • Type II anodization gives thermal but not electrical contact between cards and structure
  • Backplane flexure allowed for thermal expansion mismatch via shoulder bolts
  • Deployable tri-band 4-element turnstile antenna
  • Frames machinable by students; 1U kit cost

Specifications

WhatValue
Scalable size1U to 3U
Frame material6061-T6 aluminium, Type II anodized (black)
Frame stock15 mm plate, machinable on a 3-axis mill
Structure fastenersTorx button head, stainless 18-8, M2 and M2.5
Solar modules per U1 per X,Y side (4 per U)
Solar module cells and power2 Spectrolab XTE-SF cells, 2.34 Wpk per module
Solar module PCB size83.0 x 100.0 mm, 4 layer, 1.59 mm (GaAs + MCXN variant)
Solar module boost voltageup to 8.2 V
Battery packTwo 2S1P Li-ion 18650 packs on one card, 7.2 V at 5.2 Ah
Cell modelTenergy 30005-0 (ICR 18650-2600), 2600 mAh
Bus voltage6.0 V min, 7.2 V typical, 8.4 V max (2S Li-ion)
Data bus1 Mbps CAN
PCB thickness1.59 mm (0.063 in)
PCB stackup (4 layer)1 oz outer Cu, 0.5 oz inner Cu, Isola FR408HR core 0.991 mm, prepreg 0.200 mm
Structure card fasteners (backplane)M2 x 0.4 x 4 mm
Repository licenceCERN-OHL-S v2 (solar hardware repo)

Materials in detail

Each material named in the sources: where it is used here, which other products use it, and its key numbers when its material page exists.

  • Copper

    Used in 9 partsHelical antenna (+Z end card) · Outer copper foil · Inner copper foil · +6 more

    Carry current
    58 MS/m (100 %IACS)
    Carry heat
    391 W/(m·K)
    Weight
    8.90 g/cm3
  • Isola FR408HR

    isola-fr408hr

    Used in 8 partsPCB laminate core · PCB laminate prepreg · PCB laminate (requirement) · +5 more

    Material page coming soon
  • ENIG (immersion silver acceptable)

    enig

    Used in 6 partsSurface finish · Surface finish · Surface finish · +3 more

    Material page coming soon
  • Taiyo PSR-4000 or equivalent

    taiyo-psr-4000

    Used in 6 partsSoldermask · Soldermask · Soldermask · +3 more

    Material page coming soon
  • Aluminium alloy 6061

    Used in 5 parts1U +X frame · Card wedge (card clamp) · Frame stock · +2 more

    Strength
    276 MPa yield
    Weight and stiffness
    2.7 g/cm3
    Heat conduction
    167 W/(m·K)
    Also in 9 other products
  • Tin-lead solder (Sn63/Pb37 eutectic and Sn60/Pb40)

    Used in 5 partsSolder paste · Solder paste · Solder paste · +2 more

    Melting point
    183 °C
    Density
    8.40 g/cm3
    Tin whiskers
    Lead prevents them
  • white silkscreen

    pcb-silkscreen-ink

    Used in 4 partsSilkscreen · Silkscreen · Silkscreen · +1 more

    Material page coming soon
  • Anodized aluminium

    Used in 3 parts1U +X frame (anodize) · Card wedge (anodize) · Frames, all sizes (programme summary)

    Thin protective film
    0.0001 to 0.001 in
    Thick hard film
    350 to 360 HV
    Dyed finish
    13 to 25 µm
  • Lithium-Ion

    lithium-ion-cell

    Used in 2 parts18650 cell (Tenergy, 4 per card) · Battery cell model (README)

    Also in 12 other products
    Material page coming soon
  • Kapton HN polyimide film

    Used in 2 partsPolyimide thermofoil heater (Minco, 2 per card) · Heater tape

    Strength
    231 MPa
    Heat and cold
    -269 °C to 400 °C
    Electrical insulation
    303 kV/mm
  • Gallium arsenide

    Used in 2 partsSolar cell (SpectraLabs XTE-SF, 2 per module) · Solar cell technology

    Carry electrons fast
    8500
    Absorb and emit at a wide band gap
    1.424
    Hold up in orbit, with a cost
    30
    Also in 10 other products
  • Chromate conversion coating

    Used in 1 partElectrical-ground contact patches on frames

    Corrosion barrier
    0.25 to 1 µm
    Paint base
    Within 48 hours
    Self-repair
    Cr(VI) migrates
  • Aluminium

    Used in 1 partBackplane grounding to frame

    Weight
    2.7 g/cm3
    Electrical conduction
    2.6458 µΩ·cm
    Heat conduction
    220 W/(m·K)
    Also in 33 other products
  • CRP Windform SLS Nylon (Form3 Flame Retardant Resin also OK)

    windform-sls-nylon

    Used in 1 partCell holder

    Material page coming soon
  • leaded or RoHS solder paste (alloy not named)

    solder-paste

    Used in 1 partSolder paste

    Material page coming soon
  • PSA (pressure-sensitive adhesive; product not named)

    pressure-sensitive-adhesive

    Used in 1 partSolar cell attachment

    Material page coming soon
  • Spectrolab XTE-SF cells

    spectrolab-xte-sf-solar-cell

    Used in 1 partSolar cell on module (programme summary)

    Also in 1 other product
    Material page coming soon
  • SS 18-8

    stainless-18-8

    Used in 1 partStructure fasteners (programme standard)

    Material page coming soon
  • urethane PSA

    urethane-psa

    Used in 1 partHeater attachment adhesive

    Material page coming soon

Every part we have

Parts-level for frame, PCB materials, connectors, solar cells, battery cells and heaters from public repos and slides, but electronic-component assemblies are capped at the 25 most significant lines each and the frame fastener materials are not stated.

Material IDs

aluminium-6061anodized-aluminiumchromate-conversion-coatingaluminiumcopperstainless-18-8isola-fr408hrenigtaiyo-psr-4000pcb-silkscreen-inksolder-sn-pbgallium-arsenidespectrolab-xte-sf-solar-cellpressure-sensitive-adhesivelithium-ion-cellwindform-sls-nylonpi-kapton-hnurethane-psasolder-paste
Frame, card clamps and mechanical parts11
PartMaterialFinish and standardMade by
1U +X frame“MATERIAL: ALUMINUM 6061-T6” aluminium 6061-T6aluminium-6061 Type II anodize, black —
1U +X frame (anodize)“ANODIZATION: TYPE II, BLACK” Type II anodize, blackanodized-aluminium — —
Card wedge (card clamp)“MATERIAL: 6061-T6 (SS).” 6061-T6 (SS)aluminium-6061 Type II anodize, black —
Card wedge (anodize)“ANODIZATION: TYPE II, BLACK” Type II anodize, blackanodized-aluminium — —
Frames, all sizes (programme summary)“6061-T6 Aluminum, Type II anodized (black)” 6061-T6 Aluminum, Type II anodized (black)anodized-aluminium Type II anodized, black —
Frame stock“Machinable by students on a 3 axis mill from 15 mm (½ inch) plate stock” 6061-T6 Aluminumaluminium-6061 — —
Electrical-ground contact patches on frames“Antenna cards are RF grounded to frame using anodization mask + Alodine 1201 coating at” Alodine 1201 coatingchromate-conversion-coating anodization masked at card clamp features —
Backplane grounding to frame“Backplane is grounded to the Aluminum frame on the internal four fasteners; this requires preparing the Aluminum for an electrical connection.” Aluminum frame (prepared for electrical connection)aluminium — —
Battery-card inhibit pin“MATERIAL: ALUMINUM 6061-T6” ALUMINUM 6061-T6aluminium-6061 Type II anodize, black —
Battery-card inhibit push plate“MATERIAL: ALUMINUM 6061-T6” ALUMINUM 6061-T6aluminium-6061 Type II anodize, black —
Helical antenna (+Z end card)“MATERIAL: BERYLLIUM COPPER, SILVER COATING” BERYLLIUM COPPERcopper SILVER COATING —
Fasteners and COTS mechanical hardware10
PartMaterialFinish and standardMade by
Structure fasteners (programme standard)“Standardized on Torx button head SS 18-8 M2 and M2.5 fasteners” SS 18-8stainless-18-8 — —
M2 x 0.4 x 4 button head screw“M2 x 0.4 x 4 Button Head Screw” Not said — 90910A920
M2.5 x 0.45 x 8 Torx flat head screw“M2.5 x 0.45 x 8 TORX FLAT HEAD SCREW” Not said — 92703A159
M2.5 x 0.45 x 10 socket head screw“M2.5 x 0.45 x 10 Socket Head Screw” Not said — 92290A060
M2.5 x 0.45 x 2.5 screw-lock helical tangless insert“M2.5 x 0.45 x 2.5 SCREW-LOCK HELICAL TANGLESS” Not said — 91630A221
M1.5 x 6 dowel pin“M1.5 DIA x 6 DOWEL PIN” Not said — 93600A061
Spring plunger for card slot“CPSLO cubesat.org Springs (Using Slotted Long-Nose Spring Plunger 8-36 in CAD)” Not said — 84985A46
Backplane locating shoulder bolt“3 mm Shoulder Diameter, 2 mm Shoulder Length, M2 x 0.4 mm Thread, McMaster Carr #[90263A111]” Not said — McMaster-Carr 90263A111
Backplane card fasteners“All other fasteners are M2 x 0.4 x 4 mm.” Not said — —
Spacers and standoffs (planned)“#4-40 standoff” Not said — —
C3 card: PCB laminate, finish and assembly materials11
PartMaterialFinish and standardMade by
PCB laminate core“Core Isola FR408HR” Isola FR408HRisola-fr408hr IPC 6012 Class 2 —
PCB laminate prepreg“Prepreg - Isola FR408HR 2113” Isola FR408HR 2113isola-fr408hr IPC 6012 Class 2 —
PCB laminate (requirement)“Isola FR408HR or material with equivalent Dk.” Isola FR408HR or material with equivalent Dkisola-fr408hr IPC 6012 Class 2 —
Outer copper foil“Layer 1 foil, 1 oz Cu after plating” coppercopper IPC 6012 Class 2 —
Inner copper foil“Layer 2 foil, 0.5 oz Cu” coppercopper IPC 6012 Class 2 —
Surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
Soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 IPC 6012 Class 2 —
Silkscreen“White silkscreen on top and bottom surface” white silkscreenpcb-silkscreen-ink — —
Solder paste“Solder paste MUST be leaded.” leaded solder paste (alloy not named)solder-sn-pb IPC Class 2 assembly —
Flux and cleaning“Aqueous flux and wash strongly preferred.” aqueous flux and wash (preferred) NASA Standard Visibly Clean (VC) —
Conformal coating“No conformal coating.” none — —
C3 card: connectors and RF hardware5
PartMaterialFinish and standardMade by
40-pin main connector (Samtec; 1 placed)“Connector Header Through Hole, Right Angle 40 position 0.050" (1.27mm)” Not said — TFM-120-01-L-D-RA
SMPM RF connector (TE Connectivity Linx; 2 placed)“SMPM Connector Plug, Male Pin 50 Ohms Board Edge, Cutout; Surface Mount Solder” Not said — 2477330-1
micro SD connector (Hirose; 1 placed)“Micro SD Card Connector Push-Push R/A” Not said — DM3BT-DSF-PEJS
14-pin debug connector (JST; 1 placed)“Connector Header Surface Mount, Right Angle 14 position 0.039" (1.00mm)” Not said — SM14B-SHLS-TF
4-pin header (Sullins Connector Solutions; 1 placed)“Connector Header Through Hole 4 position 0.050" (1.27mm)” Not said — GRPB041VWVN-RC
C3 card: electronic components (25 most significant of the BOM)25
PartMaterialFinish and standardMade by
Octavo OSD335x processor module (Octavo Systems; 1 placed)“OSD335x Embedded Module 1GHz 512MB” Not said — OSD3358-512M-BSM
eMMC storage (Swissbit; 1 placed)“eMMC Industrial Embedded MMC, EM-30 (153-b), 64 GB, 3D TLC Flash, -40C to +105C” Not said — SFEM064GB2ED1TO-A-6F-111-STD
radio transceiver IC (Microchip; 2 placed)“IC RF TxRx Only 802.15.4, General ISM < 1GHz 389.5MHz ~ 510MHz, 779MHz ~ 1.02GHz, 2.4GHz 48-VFQFN Exposed Pad” Not said — AT86RF215-ZUR
FRAM (Cypress Semiconductor Corp; 1 placed)“FRAM (Ferroelectric RAM) Memory IC 64Kbit I²C 1 MHz 550 ns 8-SOIC” Not said — FM24CL64B-G
real-time clock (Micro Crystal AG; 1 placed)“Real Time Clock (RTC) IC Clock/Calendar 2B, 43B I²C 8-WCDFN” Not said — RV-3028-C7 32.768KHZ 1PPM-TA-QA
radiation-tolerant comparator (watchdog) (Texas Instruments; 1 placed)“Analog Comparators 2.2-V to 36-V, radiation tolerant microPower quad comparator in space enhanced plastic 14-TSSOP -55 to 125” Not said — TLV1704AMPWPSEP
CAN transceiver (Texas Instruments; 2 placed)“1/1 Transceiver CANbus SOT-23-8” Not said — TCAN330GDCNT
5 V buck regulator (Analog Devices Inc.; 2 placed)“Buck Switching Regulator IC Positive Fixed 5V 1 Output 2A 8-WFDFN Exposed Pad” Not said — LTC3624IDD-5#PBF
eFuse (auto-retry) (Texas Instruments; 1 placed)“TPS259621 - Auto-retry eFuse With Accurate Current Monitor 2A 8-SO PowerPad” Not said — TPS259621DDAT
eFuse (latch-off) (Texas Instruments; 1 placed)“TPS259620 - Latch-off eFuse With Accurate Current Monitor 2A 8-SO PowerPad” Not said — TPS259620DDAT
RF low-noise amplifier (Qorvo; 2 placed)“RF amplifier (LNA) 400-2000 MHz NF 0.45db” Not said — TQP3M9036
RF power amplifier (Qorvo; 1 placed)“RF Amplifier 50-1500Mhz 1W 5V P1dB 30dBm @ 940Mhz” Not said — TQP7M9105
RF synthesizer (Silicon Labs; 1 placed)“RF Synthesizer w/ integrated VCOs (IF OUT)” Not said — SI4112-D-GM
26 MHz TCXO (Taitien; 2 placed)“26 MHz TCXO Clipped Sine Wave Oscillator 2.8V ~ 3.3V 4-SMD, No Lead” Not said — TYETACSANF-26.000000
403.5 MHz SAW filter (RFMi; 2 placed)“403.5MHz Frequency General Purpose RF SAW Filter (Surface Acoustic Wave) 1.6dB 7.5MHz Bandwidth 8-SMD, No Lead” Not said — RF1419D
457.5 MHz SAW filter (Qorvo; 1 placed)“Filter - SAW, 457.5 MHz, 15 MHz” Not said — 856930
1.308 GHz band-pass filter (AVX Corp; 3 placed)“1.308GHz Frequency Band Pass RF Filter (Radio Frequency) 200MHz Bandwidth 1.2dB 0805 (2012 Metric), 4 PC Pad” Not said — BP0805A1308ASTR
RF mixer (Mini-Circuits; 1 placed)“RF Mixer, Diode Ring, 0.3 - 12 GHz” Not said — MAC-24+
RF switch (Qorvo; 1 placed)“RF Switch ICs 5-6000MHz SPDT IL .25dB Iso 39dB” Not said — QPC1022TR7
bi-directional coupler (Mini-Circuits; 1 placed)“Bi-Directional Coupler / Signal Conditioning BI-DIR COUP / SURF MT / RoHS” Not said — BDCN-20-13+
RF transformer (Mini-Circuits; 2 placed)“Signal Conditioning RF XFMR / SURF MOUNT / RoHS” Not said — NCS2-62+
220 uF tantalum capacitor (KYOCERA AVX; 3 placed)“220µF Molded Tantalum Capacitors 16V 2917 (7343 Metric) - SPECIAL” Not said — TBJE227K016LBSZ0000
22 uF X7R capacitor (Taiyo Yuden; 13 placed)“22 µF ±10% 25V Ceramic Capacitor X7R 1210 (3225 Metric)” Not said — TMK325B7226KMHP
10 k chip resistor (Stackpole Electronics; 40 placed)“10 kOhms ±1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT10K0
100 nF X7R capacitor (KEMET; 42 placed)“0.1 µF ±10% 50V Ceramic Capacitor X7R 0603 (1608 Metric)” Not said — C0603C104K5RACAUTO
Backplane: PCB laminate, finish and assembly materials10
PartMaterialFinish and standardMade by
PCB laminate (OreSat1 2U backplane)“Isola FR408HR or material with equivalent Dk.” Isola FR408HR or material with equivalent Dkisola-fr408hr IPC 6012 Class 2 —
PCB core“Core Isola FR408HR” Isola FR408HRisola-fr408hr IPC 6012 Class 2 —
PCB prepreg“Prepreg - Isola FR408HR 2113” Isola FR408HR 2113isola-fr408hr IPC 6012 Class 2 —
Surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
Soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 — —
Silkscreen“White silkscreen on top and bottom surface” white silkscreenpcb-silkscreen-ink — —
Solder paste“Solder paste MUST be leaded.” leaded solder paste (alloy not named)solder-sn-pb IPC J-STD-001 Class 2 —
Conformal coating“No conformal coating.” none — —
Back-side thermal ring“Ring of bare copper on the back is for thermal contact.” bare coppercopper — —
1U/2U backplane PCB process (earlier versions)“The board is designed for a [4 layer stackup](https://docs.oshpark.com/services/four-layer/) from [OSH Park]” OSH Park 4 layer stackup — —
Backplane: connectors4
PartMaterialFinish and standardMade by
40-pin main connector (Samtec Inc.; 13 placed)“40 Position Receptacle Connector 0.050" (1.27mm) Through Hole Gold” Not said Gold (as listed in connector description) SFM-120-01-S-D-LC
20-pin auxiliary connector (Samtec Inc.; 2 placed)“20 Position Receptacle Connector 0.050" (1.27mm) Through Hole Gold” Not said Gold (as listed in connector description) SFM-110-01-S-D-LC
SMPM RF connector (Molex; 10 placed)“SMPM Connector Plug, Male Pin 50 Ohms Surface Mount, Through Hole Solder” Not said Gold (as listed in connector description) 0733000110
16-pin debug connector (Harwin Inc.; 1 placed)“16 Position Receptacle Connector 0.050" (1.27mm) Surface Mount Gold” Not said Gold (as listed in connector description) M55-6001642R
Backplane: electronic components4
PartMaterialFinish and standardMade by
10 uF capacitor (Murata Electronics; 13 placed)“10 µF ±10% 25V Ceramic Capacitor X7R 1206 (3216 Metric)” Not said — GRT31CR71E106KE13L
60.4 ohm CAN termination resistor (Stackpole Electronics Inc; 4 placed)“60.4 Ohms ±1% 0.25W, 1/4W Chip Resistor 1206 (3216 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF1206FT60R4
1 nF capacitor (KEMET; 2 placed)“1 nF (1000 pF) ±5% 50V Ceramic Capacitor C0G, NP0 0603 (1608 Metric)” Not said — C0603C102J5GECAUTO
0 ohm jumper (Stackpole Electronics Inc; 2 placed)“0 Ohms Jumper Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603ZT0R00
Solar module (1U GaAs + MCXN): cells, PCB and assembly materials12
PartMaterialFinish and standardMade by
Solar cell (SpectraLabs XTE-SF, 2 per module)“27cm2 Class (Rectangular Cell) Space Qualified Triple Junction Solar Cell” triple junction (GaAs design per repo README)gallium-arsenide — XTE-SF 27 mm^2 CIC
Solar cell technology“We've flown our GaAs solar cell design” GaAsgallium-arsenide — —
Solar cell on module (programme summary)“2 Spectrolab XTE-SF cells” Spectrolab XTE-SF cellsspectrolab-xte-sf-solar-cell — —
Solar cell attachment“Solar Cells D2 and D6 are hand placed; see ["PSAS SOP - Solar Cell mounting with PSA"]” PSA (pressure-sensitive adhesive; product not named)pressure-sensitive-adhesive — —
PCB laminate“There are no requirements on the prepreg or core of this four layer stackup.” not specified IPC 6012 Class 2 —
Outer copper“Outside copper layers is 1 oz Cu after plating (0.043 mm / 1.7 mil)” coppercopper IPC 6012 Class 2 —
Inner copper“Inside copper layers are 0.5 oz Cu (0.018 mm / 0.7 mil)” coppercopper IPC 6012 Class 2 —
Surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
Soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 — —
Silkscreen“White silkscreen on top and bottom surface” white silkscreenpcb-silkscreen-ink — —
Solder paste“Solder paste MUST be leaded.” leaded solder paste (alloy not named)solder-sn-pb — —
Conformal coating“No conformal coating.” none — —
Solar module: connectors3
PartMaterialFinish and standardMade by
12-pin Harwin connector (Harwin; 1 placed)“12 Position Receptacle Connector 0.050" (1.27mm) Surface Mount Gold” Not said Gold (as listed in connector description) M55-6021242R
4-pin Samtec connector (Samtec; 1 placed)“4 Position Receptacle Connector 0.079" (2.00mm) Surface Mount, Right Angle Gold” Not said — MMS-104-02-L-SH
14-pin JST connector (JST; 1 placed)“Connector Header Surface Mount, Right Angle 14 position 0.039" (1.00mm)” Not said — SM14B-SHLS-TF
Solar module: electronic components (25 most significant of the schematic)25
PartMaterialFinish and standardMade by
NXP MCXN947 microcontroller (NXP; 1 placed)“ARM Microcontrollers - MCU MCXN10, 100HLQFP (also MCXN947VNLT)” Not said — MCXN947VKLT
buck-boost regulator (Texas Instruments; 1 placed)“Buck-Boost Switching Regulator IC Positive Adjustable 2.5V 1 Output 2A (Switch) 10-WFDFN Exposed Pad” Not said — TPS63060DSCR
boost regulator (Analog Devices Inc.; 1 placed)“Boost Switching Regulator IC Positive Adjustable 1.263V 1 Output 1.5A (Switch) 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)” Not said — LT1618EMSTRPBF
ideal-diode OR controller (Linear Technologies; 1 placed)“OR Controller Source Selector Switch P-Channel 2:1 TSOT-23-6” Not said — LTC4412ES6#TRPBF
current monitor (Texas Instruments; 1 placed)“Current Monitor Regulator High/Low-Side 10mA 10-VSSOP” Not said — INA226AIDGST
I2C temperature sensor (hand-mounted) (Texas Instruments; 2 placed)“Digital Temperature Sensor with I2C/SMBus Interface, ±2°C, one-shot conversion, alert, SOT-23-6” Not said — TMP101NA/3K
CAN transceiver (Texas Instruments; 1 placed)“1/1 Transceiver Half CANbus 8-SOIC” Not said — TCAN337GD
P-channel MOSFET (Diodes Incorporated; 1 placed)“P-Channel 20 V 4.9A (Ta) 810mW (Ta) Surface Mount SOT-23-3” Not said — DMP2035UQ-7
dual P-channel MOSFET (Diodes Inc; 1 placed)“Mosfet Array 2 P-Channel (Dual) 20V 2A 600mW Surface Mount SOT-26” Not said — DMP2240UDM-7
Schottky diode (OnSemi; 1 placed)“Diode 30 V 1A Surface Mount SOD-123FL” Not said — NRVB130LSFT1G
switching diode (Vishay; 2 placed)“Diode 50 V 150mA Surface Mount SOD-323” Not said — 1N4151WS-E3-08
1.5 uH inductor (Bourns Inc.; 1 placed)“1.5 µH Shielded Inductor 2.9 A 84mOhm Max 0806 (2016 Metric) Flat Wire” Not said — SRP2012TMA-1R5M
1 uH inductor (Murata; 1 placed)“1 µH Shielded Drum Core, Wirewound Inductor 3.7 A 29mOhm Max Nonstandard” Not said — 1227AS-H-1R0N=P2
10 uH inductor (WURTH; 1 placed)“10 µH Shielded Drum Core, Wirewound Inductor 1.3 A 150mOhm Max 1919 (4848 Metric)” Not said — 744042100
100 mOhm sense resistor (Stackpole Electronics Inc; 1 placed)“100 mOhms ±1% 0.5W, 1/2W Chip Resistor 1206 (3216 Metric) Current Sense Thick Film” Not said — CSR1206FTR100
24 MHz crystal (Wurth; 1 placed)“24 MHz ±10ppm Crystal 8pF 100 Ohms 4-SMD, No Lead” Not said — 830108212309
ferrite bead (Fair-Rite; 1 placed)“120 Ohms @ 100 MHz 1 Signal Line Ferrite Bead 0805 (2012 Metric) 6A 25mOhm” Not said — 2508051217Y6
22 uF capacitor (Murata Electronics; 4 placed)“22 µF ±10% 16V Ceramic Capacitor X6S 1206 (3216 Metric)” Not said — GRT31CC81C226KE01L
10 uF capacitor (Murata Electronics; 4 placed)“10 µF ±10% 25V Ceramic Capacitor X7S 0805 (2012 Metric)” Not said — GRT21BC71E106KE13K
4.7 uF capacitor (Murata Electronics; 3 placed)“4.7 µF ±10% 16V Ceramic Capacitor X7S 0603 (1608 Metric)” Not said — GRT188C71C475KE13D
100 nF capacitor (KEMET; 18 placed)“0.1 µF ±10% 50V Ceramic Capacitor X7R 0603 (1608 Metric)” Not said — C0603C104K5RACAUTO
10 k resistor (Stackpole Electronics Inc; 6 placed)“10 kOhms ±1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT10K0
100 k resistor (Stackpole Electronics Inc; 5 placed)“100 kOhms ±5% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT100K
2 k resistor (Stackpole Electronics Inc; 3 placed)“2 kOhms ±1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT2K00
amber LED (Wurth; 1 placed)“Amber 605nm LED Indication - Discrete 2V 0603 (1608 Metric) - 120 mA @ 20 mA” Not said — 150060AS75000
Battery card: cells, holder, heaters, PCB and assembly materials16
PartMaterialFinish and standardMade by
18650 cell (Tenergy, 4 per card)“3.7V 2600mAh Lithium-Ion 18650 Flat Top Rechargeable Battery (MH48285) – UL Certified” Lithium-Ionlithium-ion-cell — MH48285 (README: Tenergy 30005-0, ICR 18650-2600, LR1865SK)
Battery cell model (README)“Tenergy model "30005-0 (ICR 18650-2600, LR1865SK)"” Li-ion 18650lithium-ion-cell — 30005-0
Cell holder“3D printed battery holder, designed for CRP Windform SLS Nylon material (OK with Form3 Flame Retardant Resin).” CRP Windform SLS Nylon (Form3 Flame Retardant Resin also OK)windform-sls-nylon — —
Polyimide thermofoil heater (Minco, 2 per card)“Polyimide Thermofoil Heaters with leads - 48.91 ohms” polyimide thermofoilpi-kapton-hn — HK6903
Heater tape“Flexible polyimide heater tapes to keep batteries above 0 C” polyimidepi-kapton-hn — —
Heater attachment adhesive“They have "vacuum OK" (apparently?) urethane PSA that we'll use to attach them to the batteries.” urethane PSAurethane-psa — Minco HK6903
NTC thermistor (Honeywell, 4 per card)“NTC Thermistor 10k Bead” Not said — 197-103LAG-A01
Switch (battery inhibit and shutdown, Aratas/Omron D2F)“Switch SPDT Chassis Mount” Not said — D2F-L3-D3
PCB laminate“There are no requirements on the prepreg or core of this four layer stackup.” not specified IPC 6012 Class 2 —
Outer copper“Outside copper layers is 1 oz Cu after plating (0.043 mm / 1.7 mil)” coppercopper IPC 6012 Class 2 —
Inner copper“Inside copper layers are 0.5 oz Cu (0.018 mm / 0.7 mil)” coppercopper IPC 6012 Class 2 —
Surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
Soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 — —
Silkscreen“White silkscreen on top and bottom surface” white silkscreenpcb-silkscreen-ink — —
Solder paste“Any solder paste (leaded or RoHS) is acceptable. RoHS solder is slightly preferred.” leaded or RoHS solder paste (alloy not named)solder-paste — —
Conformal coating“No conformal coating.” none — —
Battery card: electronic components (25 most significant of the schematic)25
PartMaterialFinish and standardMade by
NXP MCXN947 microcontroller (NXP; 1 placed)“ARM Microcontrollers - MCU MCXN10, 100HLQFP (also MCXN947VNLT)” Not said — MCXN947VKLT
fuel gauge (Analog Devices; 2 placed)“Battery Multi-Function Controller IC 14-TDFN (3x3)” Not said — MAX17205G
cell protection IC (Ablic; 4 placed)“Battery Management Li-Ion batt protect with Cell Balancing” Not said — S-8209AAA-T8T1U
P-channel MOSFET (Vishay; 10 placed)“P-Channel 30 V 60A (Tc) 52W (Tc) Surface Mount PowerPAK® 1212-8” Not said — SI7111EDN-T1-GE3
N-channel MOSFET (Vishay; 2 placed)“N-Channel 40 V 16A (Tc) 62.5W (Tc) Surface Mount PowerPAK® 1212-8” Not said — SQS484ENW-T1_GE3
N-channel MOSFET (Diodes Incorporated; 5 placed)“N-Channel 20 V 6.5A (Ta) 800mW (Ta) Surface Mount SOT-23-3” Not said — DMN2053UQ-13
dual P-channel MOSFET (Diodes Incorporated; 2 placed)“Mosfet Array 20V 2A 600mW Surface Mount SOT-26” Not said — DMP2240UDM-7
hot-swap controller (Texas Instruments; 2 placed)“Hot Swap Controller 1 Channel PCI 24-VQFN (4x4)” Not said — TPS259830ONRGER
ideal-diode OR controller (Analog Devices; 3 placed)“OR Controller Source Selector Switch P-Channel 2:1 TSOT-23-6 industrial temp” Not said — LTC4412ES6#PBF
3.3 V buck regulator (Texas Instruments; 1 placed)“Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 1.5A 16-VQFN Exposed Pad” Not said — TPS62111RSA
CAN transceiver (Texas Instruments; 1 placed)“1/1 Transceiver Half CANbus SOT-23-8” Not said — TCAN337GDCNT
comparator (Microchip; 2 placed)“Comparator with Voltage Reference Push-Pull SC-70-5” Not said — MIC842LYC5-TR
I/O expander (Analog Devices; 1 placed)“I/O Expander 8 I²C, SMBus 400kHz 16-TQFN (4x4)” Not said — MAX7310ATE+
current monitor (Analog Devices; 1 placed)“Current Monitor Regulator High-Side 16-TQFN (4x4)” Not said — MAX4211FETE
PTC resettable fuse (Littelfuse Inc; 2 placed)“Polymeric PTC Resettable Fuse 12V 1.5 A Ih Surface Mount 1206 (3216 Metric), Concave” Not said — F5765CT-ND
10 mOhm sense resistor (Vishay Dale; 2 placed)“10 mOhms ±1% 1W Chip Resistor 1206 (3216 Metric) Anti-Sulfur, Automotive AEC-Q200, Current Sense, Moisture Resistant, Pulse Withstanding Metal Element” Not said — WSLP1206R0100FEA
Schottky diode (Diodes Inc; 1 placed)“Diode 30 V 3A Surface Mount SMA” Not said — B330A-13-F
1.5 uH inductor (Bourns Inc.; 1 placed)“1.5 µH Shielded Inductor 2.9 A 84mOhm Max 0806 (2016 Metric) Flat Wire” Not said — SRP2012TMA-1R5M
analog switch (Texas Instruments; 1 placed)“2 Circuit IC Switch 1:1 1Ohm 8-VSSOP” Not said — TS5A21366DCUR
switching diode (Vishay; 11 placed)“Diode Standard 50V 150mA Surface Mount SOD-323” Not said — 1N4151WS-E3-08
100 nF capacitor (KEMET; 31 placed)“0.1 µF ±10% 50V Ceramic Capacitor X7R 0603 (1608 Metric)” Not said — C0603C104K5RACAUTO
10 uF capacitor (Murata Electronics; 6 placed)“10 µF ±10% 25V Ceramic Capacitor X7S 0805 (2012 Metric)” Not said — GRT21BC71E106KE13K
10 k resistor (Stackpole Electronics; 32 placed)“10 kOhms ±1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT10K0
100 k resistor (Stackpole Electronics; 25 placed)“100 kOhms ±1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Automotive AEC-Q200 Thick Film” Not said — RMCF0603FT100K
24 MHz crystal (Wurth; 1 placed)“24 MHz ±10ppm Crystal 8pF 100 Ohms 4-SMD, No Lead” Not said — 830108212309
Battery card: connectors1
PartMaterialFinish and standardMade by
40-pin main connector (Samtec; 1 placed)“Connector Header Through Hole, Right Angle 40 position 0.050" (1.27mm)” Not said — TFM-120-01-L-D-RA
End card and end cap (OreSat1 +Z): PCB and assembly materials9
PartMaterialFinish and standardMade by
+Z end card PCB laminate“Isola FR408HR or material with equivalent Dk.” Isola FR408HR or material with equivalent Dkisola-fr408hr IPC 6012 Class 2 —
+Z end card surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
+Z end card soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 — —
+Z end card solder paste“Solder paste MUST be leaded.” leaded solder paste (alloy not named)solder-sn-pb — —
+Z end cap PCB laminate“Isola FR408HR or material recommended.” Isola FR408HR or material recommendedisola-fr408hr IPC 6012 Class 2 —
+Z end cap surface finish“Board Surface treatment should be ENIG, althogh immersion Silver is acceptable.” ENIG (immersion silver acceptable)enig ENIG · IPC 6012 Class 2 —
+Z end cap soldermask“Taiyo PSR-4000 or equivalent soldermask on top and bottom, no requirements for color.” Taiyo PSR-4000 or equivalenttaiyo-psr-4000 — —
+Z end cap copper“Outer layers must be 1 oz Copper, inner layers can be 0.5 or 1.0 oz Copper.” coppercopper IPC 6012 Class 2 —
+Z end cap solder paste“Solder paste MUST be leaded.” leaded solder paste (alloy not named)solder-sn-pb — —
OreSat0 +Z end cap: electronic components (BOM xlsx)6
PartMaterialFinish and standardMade by
Memsic MMC5883MA magnetometer (OreSat0 +Z end cap, 2 per cap)“Magnetoresistive Sensor X, Y, Z Axis 16-LGA (3x3)” Not said — MMC5883MA
Analog Devices LTC4305 I2C multiplexer“2 Channel I2C Bus Multiplexer” Not said — LTC4305IGN#PBF
Harwin 12-pin 1.27 mm header“CONN HEADER SMD 12POS 1.27MM” Not said — M55-7011242R
Samsung 0.1 uF capacitor“CAP CER 0.1UF 50V X7R 0603” Not said — CL10B104KB8NNNL
Murata 10 uF capacitor“CAP CER 10UF 10V X7T 0603” Not said — GRM188D71A106KA73D
Rohm green LED“LED GREEN DIFFUSED 0603 SMD” Not said — SML-E12M8WT86

Standards named

  • IPC 6012 Class 2 (PCB fabrication) · All card PCBs ('build to IPC 6012 Class 2 or better')
  • IPC-A-600 Class 2 · PCB acceptability, OreSat1 2U backplane
  • IPC J-STD-001 Class 2 · Soldered assembly, OreSat1 2U backplane
  • IPC-A-610 Class 2 · Assembly inspection, OreSat1 2U backplane
  • IPC-2581 · Data exchange file for fabrication and assembly
  • NASA Standard Visibly Clean (VC) · Post-solder cleanliness of assemblies
  • ISO 11898-2 · CAN bus termination resistor power rating (design note on backplane)
  • ASME Y14.5 · Frame drawing dimensioning (1U_plusX revision F)
  • Type II anodize (no specification number given) · Black anodize on all aluminium frame and card-clamp parts

What the sources leave out

Fastener materials of the McMaster-Carr part numbers (90910A920, 92703A159, 92290A060, 91630A221, 93600A061, 84985A46, 90263A111) are not stated in the BOM; the slides only say the standard is SS 18-8 Torx button head M2/M2.5. Type II anodize has no specification number on the drawings. Solder alloy is only 'leaded' (no alloy, no flux product). Solar-module and battery-card PCB laminate is unspecified ('no requirements on the prepreg or core'). Solar cell attachment adhesive (PSA) product, cell coverglass and interconnect materials sit in a Google Docs SOP not read here. Battery pack tabs/wiring, thermal pads and the inhibit-switch plunger fasteners are not listed. The battery README names Tenergy 30005-0 while the schematic part is MH48285, a discrepancy the repo does not explain. Full PCBA BOM CSV and the Google Sheets BOM links in the battery README were not readable (no CSV in the repos); component lines were taken from KiCad schematic fields (MFR/MPN/Description), so DNP lines are excluded and some MPN fields are mis-filled in the source (TPS63060DSCR, LT1618EMSTRPBF, where the part number sits in Value). Electronic assemblies are capped at 25 lines, so many resistors/capacitors/ICs of C3 (111 distinct lines), solar module (about 50) and battery card (about 70) are not listed. ADCS, GPS, star tracker, DxWiFi, camera and antenna-card BOMs, the 3U/ESI frames, the OnShape CAD (current structure CAD) and the 9 GB structure repo's SolidWorks files were not read.

Where this comes from

40 pages from 2 websites

More space products

Collected from public pages and documents, checked 4 Nov 2026.

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