2 layers64.5 × 120.5 mm
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Monacrylic/Pinscope-benchmark-circuits
This repository contains a suite of sample KiCad circuits used as benchmarks for Pinscope.
122 parts2
4 layers55 × 95 mm
Ereader
FerretCode/ereader3.7" e-reader
- Size
- 55 × 95 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 66
- Nets
- 78
- Pads
- 270
- Tracks, vias
- 86, 18
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Sep 2026
- Updated
- 7 Sep 2026
Overview
Ereader is an open-source printed circuit board by FerretCode, from the FerretCode/ereader repository on GitHub. It is a 4-layer board of 55 × 95 mm with 66 parts on 78 nets, routed with 86 tracks and 18 vias.
It is built around the AP2112K-3.3, MBR0530 and BSS138. Its parts include 26 capacitors, 17 resistors, 6 connectors, 4 diodes and 4 switches. It belongs with the STM32 boards of this library.
Main components
3
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
Parts
66| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 1u | Capacitor_SMD:C_0603_1608Metric | C5, C7, C11, C12, C13, C14, C17, C18, C19, C20, C21, C22, C23, C24, C25 |
| 5 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R5, R15, R16, R17 |
| 5 | 51k | Resistor_SMD:R_0402_1005Metric | R10, R11, R12, R13, R14 |
| 4 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C8 |
| 3 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C1, C15, C16 |
| 3 | MBR0530 | Diode_SMD:D_SOD-123 | D2, D3, D4 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3, J4 |
| 2 | Q_PMOS | Package_TO_SOT_SMD:SOT-23 | Q1, Q3 |
| 2 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx31-2LFS | SW5, SW6 |
| 1 | 0.47R | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 0R | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 1.07k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 10p | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C10 |
| 1 | 10p | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 120R | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 68uH | Inductor_SMD:L_Taiyo-Yuden_NR-80xx | L1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | BQ20404 | Package_DFN_QFN:Texas_DSQ0010A_WSON-10-1EP_2x2mm_P0.4mm_EP0.9x1.5mm_ThermalVias | U2 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | Conn_01x24 | Connector_FFC-FPC:Hirose_FH12-24S-0.5SH_1x24-1MP_P0.50mm_Horizontal | J5 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J1 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | D_Schottky_Small | Diode_SMD:D_SOD-123F | D1 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Wuerth_693072010801 | J6 |
| 1 | STM32L072CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
Questions
How big is the Ereader PCB?
It measures 55 × 95 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Ereader use?
66 parts, built around the AP2112K-3.3, MBR0530 and BSS138. 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 Ereader KiCad files?
From the FerretCode/ereader repository on GitHub, at the commit this page was made from: the board is hardware/ereader.kicad_pcb and its schematic hardware/battery_charger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ereader design in my own project?
Its repository states no licence, so its author keeps all rights: ask FerretCode before reusing the design.
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