Eps
About the Eps PCB
Eps is an open source PCB design by UWCubeSat, published on GitHub. It is a 2-layer board measuring 89.4 × 99.3 mm, with 165 components from 57 distinct parts.
Other key parts include the AD5259BRMZ100, LTC2943, LT8611, TCA9535DBR and INA219BxD. By type, the board carries 60 capacitors, 47 resistors, 24 ICs, 23 connectors, 7 transistors and 3 diodes.
Main components on the Eps
Eps bill of materials (BOM)
165 components, 57 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AD5259BRMZ100 | SOP50P490X95-10N | U1 |
| 1 | LTC2943 | DFN-8-1EP_3x3mm_P0.5mm_EP1.66x2.38mm | U2 |
| 1 | LT8611 | 24-QFN_3x5 | U3 |
| 2 | TCA9535DBR | SSOP-24_5.3x8.2mm_P0.65mm | U4, U6 |
| 8 | INA219BxD | SOIC-8_3.9x4.9mm_P1.27mm | U5, U11, U12, U13, U14, U20, U21, U22 |
| 7 | TPS24701DGKR | TPS24701DGKR | U7, U8, U9, U10, U17, U18, U19 |
| 2 | LM2936-3.3 | SOT-223-3_TabPin2 | U15, U16 |
| 2 | AO6608 | SOT-23-6_Handsoldering | U23, U24 |
| 7 | CSD16403Q5A | TDSON-8-1 | Q5, Q6, Q7, Q8, Q9, Q10, Q11 |
| 1 | Screw_Panel | TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J1 |
| 1 | Conn_Batt1 | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J2 |
| 1 | Conn_Batt2 | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J3 |
| 1 | Conn_Panel | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J4 |
| 1 | Conn_MPPT | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J5 |
| 1 | Conn_Balance | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J6 |
| 1 | Conn_Alerts | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J7 |
| 1 | Conn_Solar_1 | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J8 |
| 1 | Conn_Solar_2 | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J9 |
| 1 | Conn_Solar_3 | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J10 |
| 1 | Conn_Solar_4 | JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J11 |
Show 37 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_I2C | JST_PHD_B8B-PHDSS_2x04_P2.00mm_Vertical | J12 |
| 1 | Conn_Star | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J13 |
| 1 | Conn_Wheel | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J14 |
| 1 | Conn_Deploy | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J15 |
| 1 | Conn_Comm | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J16 |
| 1 | Conn_Zone1 | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J17 |
| 1 | Conn_Zone2 | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J18 |
| 1 | Conn_Prop | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J21 |
| 1 | Conn_Pwr1 | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J22 |
| 1 | Conn_Pwr2 | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J23 |
| 1 | Conn_GPR | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J26 |
| 1 | Conn_Power | Molex_Micro-Fit_3.0_43045-0212_2x01_P3.00mm_Vertical | J27 |
| 2 | BAV99 | SOT-23 | D1, D2 |
| 1 | D_Schottky | D_SOD-128 | D4 |
| 1 | 4.7u | BWVS00606045 | L1 |
| 12 | 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C10, C11, C17, C18, C19, C20, C41 +4 |
| 8 | 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C27, C28, C29, C30, C52, C53, C54 |
| 3 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C7, C8 |
| 2 | 4.7u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C21 |
| 2 | 22u | CP_Radial_D6.3mm_P2.50mm | C5, C26 |
| 3 | .1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C36, C38 |
| 1 | 10p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 15 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C22, C23, C24, C25, C31, C32, C33 +7 |
| 7 | 68n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14, C15, C16, C43, C44, C45 |
| 7 | 470u | CP_Radial_D8.0mm_P3.50mm | C35, C37, C39, C40, C58, C59, C60 |
| 20 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R8, R17, R19, R20 +12 |
| 1 | 6.2k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 2 | 47 | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R6, R7 |
| 1 | 309k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 1 | 60.4k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 1 | 5m | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R12 |
| 1 | 150k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13 |
| 1 | 1Meg | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14 |
| 1 | 50m | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R15 |
| 3 | 3.3k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R27, R28 |
| 8 | 2m | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R29, R30, R31, R32, R43, R44, R45 |
| 7 | 10 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33, R34, R35, R36, R46, R47, R48 |
Eps design files
The KiCad project lives in the UWCubeSat/EPS repository on GitHub; these links point at the commit this page was built from.
- Layouteps/eps.kicad_pcb
Eps: common questions
How big is the Eps PCB?
The Eps measures 89.4 × 99.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Eps?
165 components, from 57 distinct parts. The full bill of materials is listed on this page.
Where can I download the Eps design files?
From the UWCubeSat/EPS repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Eps design in my own project?
The repository has no license, so all rights stay with UWCubeSat. Use it as a reference, and ask the author before reusing the design.
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