4 layers120 × 120 mm
4 layers40 × 28 mm
Faraday Cup
MECSEM/electricalAll the electrical designs for MECSEM.
- Size
- 40 × 28 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 43
- Nets
- 17
- Pads
- 122
- Tracks, vias
- 249, 23
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 27 Apr 2026
- Updated
- 27 Apr 2026
Overview
Faraday Cup is an open-source printed circuit board by MECSEM, from the MECSEM/electrical repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 40 × 28 mm with 43 parts on 17 nets, routed with 249 tracks and 23 vias.
It is built around the H5VHD3U, H5VUD5U and AO3400A. Its parts include 12 resistors, 10 capacitors, 6 diodes, 3 transistors and 3 connectors. It belongs with the RP2350 boards of this library.
Main components
3
H5VHD3U
SOD-323-55℃~+125℃ 14V 185pF 200nA 25A@8/20us 350W@8/20us 5V 9V ESD IEC 61000-4-2、IEC 61000-4-5 Single-channel Unidirectional SOD-323 ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
H5VUD5U
SOD-523-55℃~+125℃ 0.8pF 15V 200nA 5A@8/20us 5V 75W@8/20us 9V ESD IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 470Ω | PCM_JLCPCB:R_0805 | R8, R9, R10, R11, R12 |
| 4 | H5VHD3U | PCM_JLCPCB:D_SOD-323 | D2, D3, D5, D6 |
| 3 | 10uF | PCM_JLCPCB:C_1206 | C3, C5, C6 |
| 3 | 1uF | PCM_JLCPCB:C_0805 | C7, C8, C9 |
| 3 | ~ | PCM_JLCPCB:Hole_Tooling_JLCPCB | H2, H3, H4 |
| 2 | 12kΩ | PCM_JLCPCB:R_0603 | R3, R5 |
| 2 | 2.2nF | PCM_JLCPCB:C_0805 | C4, C10 |
| 2 | 300kΩ | PCM_JLCPCB:R_0603 | R4, R7 |
| 2 | H5VUD5U | PCM_JLCPCB:D_SOD-523 | D1, D4 |
| 2 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H5 |
| 2 | MMBT2222A 1P | PCM_JLCPCB:Q_SOT-23 | Q2, Q3 |
| 1 | 100pF | PCM_JLCPCB:C_0402 | C2 |
| 1 | 10kΩ | PCM_JLCPCB:R_0402 | R6 |
| 1 | 1MΩ | PCM_JLCPCB:R_0603 | R2 |
| 1 | 200Ω | PCM_JLCPCB:R_0603 | R1 |
| 1 | 220pF | PCM_JLCPCB:C_0603 | C1 |
| 1 | AO3400A | PCM_JLCPCB:Q_SOT-23 | Q1 |
| 1 | G5V-1 | FYDPLIB:Relay_SPDT_Omron_G5V-1 | K1 |
| 1 | MCP1501-25xCH | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | Micro-Fit 3.0 2x4 | FYDPLIB:Molex_Micro-Fit_3.0_43045-0812_2x04_P3.00mm_Vertical | J3 |
| 1 | OPA2186DR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | U.FL | PCM_JLCPCB:IPEX-SMD_BWIPX-1-001E | J2 |
| 1 | U.FL | FYDPLIB:IPEX-SMD_BWIPX-1-001E | J1 |
| 1 | ~ | PCM_JLCPCB:Part_Num_JLCPCB | PN1 |
Questions
How big is the Faraday Cup PCB?
It measures 40 × 28 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Faraday Cup use?
43 parts, built around the H5VHD3U, H5VUD5U and AO3400A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Faraday Cup KiCad files?
From the MECSEM/electrical repository on GitHub, at the commit this page was made from: the board is HVDC/Faraday Cup/Faraday Cup.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Faraday Cup design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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