2 layers55 × 40 mm
2 layers34.2 × 22.4 mm
replacement integrated servo drive PCB for 4818/4825 brushless motors
- Size
- 34.2 × 22.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 45
- Pads
- 194
- Tracks, vias
- 0, 0
- Pours
- 4
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 May 2026
- Updated
- 20 May 2026
Overview
Drive is an open-source printed circuit board by earlynerd, from the earlynerd/bl4818-drive repository on GitHub. It is a 2-layer board of 34.2 × 22.4 mm with 64 parts on 45 nets.
It is built around the BSS138, BAT48ZFILM and LTST-C190KFKT, with the SMAJ30A among its other parts. Its parts include 23 resistors, 21 capacitors, 7 ICs, 6 transistors and 4 connectors. It belongs with the robots and motor control boards of this library.
Main components
4
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
BAT48ZFILM
SOD-123-40℃~+150℃ 25uA@40V 350mA 40V 900mV@500mA Independent SOD-123 Schottky Diodes ROHSSTMicroelectronicsSchottky Diodes
LTST-C190KFKT
0603-35℃~+85℃ 130° 20mA 2V 605nm 611nm 75mW 90mcd Discrete Diode Orange Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
SMAJ30A
DO-214AC(SMA)-55℃~+150℃ 30V 33.3V 400W 48.4V 5uA 8.3A TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSGOODWORKESD And Surge Protection (TVS/ESD)
README
README.mdbl4818-drive
replacement integrated servo drive PCB for 4818/4825 brushless motors
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C32, C33, C46, C47, C48, C49, C50 |
| 7 | 1.5k | Resistor_SMD:R_0402_1005Metric | R14, R15, R17, R20, R24, R28, R30 |
| 7 | 1nF | Capacitor_SMD:C_0402_1005Metric | C19, C30, C31, C40, C41, C42, C45 |
| 6 | 22uF | Capacitor_SMD:C_0805_2012Metric | C34, C35, C36, C37, C43, C44 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R6, R25, R31 |
| 3 | 0 | Resistor_SMD:R_0603_1608Metric | R1, R2, R5 |
| 3 | 10 | Resistor_SMD:R_0603_1608Metric | R3, R23, R29 |
| 3 | 2k | Resistor_SMD:R_0402_1005Metric | R18, R19, R27 |
| 3 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q5, Q6, Q7 |
| 3 | DRV5013 | Package_TO_SOT_SMD:SOT-23 | U1, U2, U3 |
| 3 | TSM6502CR RLG | fet:TRANS_TSM6502CR_RLG | Q2, Q3, Q4 |
| 2 | ~ | xt30:XT30(2+2)PB-M.G.B | J4, J5 |
| 1 | 0.02 | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | 10 | Resistor_SMD:R_0805_2012Metric | R26 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R32 |
| 1 | 470uF | Capacitor_THT:C_Radial_D8.0mm_H7.0mm_P3.50mm | C1 |
| 1 | BAT48ZFILM | Diode_SMD:D_SOD-123 | D3 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | Conn_ARM_JTAG_SWD_10 | kuleana:SAMTEC_FTSH-105-XX-X-DV | J1 |
| 1 | INA180B2 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | LTC2850xDD | Package_DFN_QFN:DFN-8-1EP_3x3mm_P0.5mm_EP1.66x2.38mm | U4 |
| 1 | M2003FC1AE | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U7 |
| 1 | MC78L05_SOT89 | Package_TO_SOT_SMD:SOT-89-3 | U8 |
| 1 | Orange | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | SMAJ30A | Diode_SMD:D_SMA | D4 |
Questions
How big is the Drive PCB?
It measures 34.2 × 22.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Drive use?
64 parts, built around the BSS138, BAT48ZFILM, LTST-C190KFKT and SMAJ30A. 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 Drive KiCad files?
From the earlynerd/bl4818-drive repository on GitHub, at the commit this page was made from: the board is drive.kicad_pcb and its schematic canbus.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Drive design in my own project?
Its repository states no licence, so its author keeps all rights: ask earlynerd before reusing the design.
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