2 layers95 × 55 mm
2 layers44 × 21 mm
Blink timer
sjm42/electronicsVarious electronics projects
- Size
- 44 × 21 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 9
- Pads
- 42
- Tracks, vias
- 70, 7
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Mar 2018
- Updated
- 16 Aug 2024
Overview
Blink timer is an open-source printed circuit board by sjm42, from the sjm42/electronics repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 44 × 21 mm with 14 parts on 9 nets, routed with 70 tracks and 7 vias.
It is built around the LM393, IRF4905 and SS310. Its parts include 6 resistors, 3 diodes, 2 capacitors, 1 IC and 1 transistor.
Main components
3
LM393
SOP-8-16V~16V 0℃~+70℃ 2 2.5mA 250nA 2V~36V 36V 5mV 5nA Fail-safe function Open-drain SOP-8 Comparators ROHSMSKSEMIComparators
IRF4905
TO-220-35℃~+175℃ 1 P-Channel 12nF 150nC@10V 1nF 2.5V 200W 450pF 60V 75A 9mΩ P-Channel TO-220 MOSFETs ROHSCmosMOSFETs
SS310
SMA(DO-214AC)-55℃~+150℃ 100V 3A 50uA@100V 80A 850mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHShongjiachengSchottky Diodes
README
README.mdElectronics
My various electronics projects
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R5 |
| 2 | 10µ | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2 |
| 2 | 1N4148 | Diode_SMD:D_MiniMELF | D1, D2 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R4 |
| 1 | 220k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | Conn_01x04_Socket | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J1 |
| 1 | IRF4905 | Package_TO_SOT_SMD:TO-263-3_TabPin2 | Q1 |
| 1 | LM393 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | SS310 | Diode_SMD:D_SMA | D3 |
Questions
How big is the Blink timer PCB?
It measures 44 × 21 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Blink timer use?
14 parts, built around the LM393, IRF4905 and SS310. 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 Blink timer KiCad files?
From the sjm42/electronics repository on GitHub, at the commit this page was made from: the board is blink-timer/blink-timer.kicad_pcb and its schematic blink-timer/blink-timer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Blink timer design in my own project?
Its repository publishes it under the Apache-2.0 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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