This is the bare PCB you need to build your own 20mm FET+7135 driver! DIY parts kit available here.
Specifications:
- Fully stable with attiny25
- 2 oz. heavy copper
- Red solder mask
- 1.2mm PCB thickness
- 20mm diameter
Parts Required:
- FET: LFPAK56 N-Channel Mosfet
- 7135: AMC7135 Linear Regulator
- D1: SOD-323 / 0805 / 0603 Schottky diode
- Z1: SOD-323 Zener Diode - 4.3v <--> 5.1v
- C1: 10uF MLC capacitor, 0603 or 0805 (X7R preferred)
- R1: 19.1K, 1% resistor, 0603 or 0805
- R2: 4.7K, 1% resistor, 0603 or 0805
- UI: ATTINY13A MCU, SSH or SSU variant
- * symbol indicates MCU Pin 1 location
- Spring / LED leads
- OTC: 1uF MLC capacitor, 0603 or 0805 (X7R preferred)
- Pad with side closest to MCU can also be used as electronic switch pad
- P: 2x ~40K-80K 0402 or 0603 resistors