Pcb relay board-2
balazsgrill·pcb-relay-board-2
About the Pcb relay board-2
Pcb relay board-2 is an open source PCB design by balazsgrill, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 78.7 × 87.6 mm, with 45 components from 9 distinct parts.
By type, the board carries 8 transistors, 8 relays, 8 test points, 8 diodes, 8 resistors and 4 connectors.
From the project
Printed Circuit Board for 5V Relays x8
Compatible relays: 5V coil / 230V-10A Songle SRD-5VDC-SL-C Zetter AZ943-1CH-5DE Hongfa HF3FA/005-ZT Omron G5LE-1 Panasonic JS1-5V-F Transistors: BC337 or compatible (CBE layout) Diodes: 1N4148 or similar Resistors: 5K Capacitor: 100uF
* On the silscreen, Normally on and Normally off indications (NONx and NOFFx respectively are reversed)

Pcb relay board-2 bill of materials (BOM)
45 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | BC337 | TO-92_Inline_Wide | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 |
| 1 | Conn_02x05_Counter_Clockwise | Pin_Header_Straight_2x05_Pitch2.54mm | J1 |
| 2 | Screw_Terminal_01x08 | TerminalBlock_Phoenix_PT-3.5mm_8pol | J2, J4 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_PT-3.5mm_2pol | J3 |
| 8 | SANYOU_SRD_Form_C | Relay_SPDT_SANYOU_SRD_Series_Form_C | K0, K1, K2, K3, K4, K5, K6, K7 |
| 8 | TEST | Pin_Header_Straight_1x01_Pitch1.00mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 |
| 8 | D_ALT | D_A-405_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 |
| 1 | CP1 | CP_Radial_D8.0mm_P3.50mm | C1 |
| 8 | 2.5K | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
Pcb relay board-2 design files
The KiCad project lives in the balazsgrill/pcb-relay-board-2 repository on GitHub; these links point at the commit this page was built from.
- Layoutrelay-board-2.kicad_pcb
Pcb relay board-2: common questions
How big is the Pcb relay board-2?
The Pcb relay board-2 measures 78.7 × 87.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pcb relay board-2?
45 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pcb relay board-2 design files?
From the balazsgrill/pcb-relay-board-2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Pcb relay board-2 design in my own project?
Yes, under the terms of its CC0-1.0 license, which balazsgrill chose for the repository.