ULN2803-Relay-Driver
About the ULN2803-Relay-Driver PCB
ULN2803-Relay-Driver is an open source PCB design by sumitraj7766, published on GitHub. It is a board, with 64 components from 12 distinct parts.
Other key parts include the ULN2803A. By type, the board carries 25 resistors, 17 diodes, 10 connectors, 8 relays, 2 capacitors and 1 IC.
From the project
A professional 8-channel relay driver PCB designed using KiCad and ULN2803A Darlington transistor array IC for embedded systems and industrial automation applications.
A professional 8-channel relay driver PCB designed using KiCad and ULN2803A Darlington transistor array IC for embedded systems and industrial automation applications.
This project is an 8-channel relay control board capable of driving multiple relays using a ULN2803A driver IC.
The PCB was fully designed in KiCad including:
- Schematic Design - PCB Layout - Routing - Component Placement - 3D PCB Visualization - Hardware Documentation
Main components on the ULN2803-Relay-Driver
ULN2803-Relay-Driver bill of materials (BOM)
64 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ULN2803A | DIP-18_W7.62mm_LongPads | U1 |
| 1 | Header/Screw Terminal | JST_EH_S2B-EH_1x02_P2.50mm_Horizontal | J1 |
| 1 | INPUT | PinHeader_1x08_P2.54mm_Horizontal | J2 |
| 8 | Conn_01x03_Pin | JST_ZE_B08B-ZESK-D_1x08_P1.50mm_Vertical | J3, J4, J5, J6, J7, J8, J9, J10 |
| 8 | G5LE-1 | Relay_SPDT_Omron-G5LE-1 | K1, K2, K3, K4, K5, K6, K7, K8 |
| 1 | SW_SPST | SW_Matias_6.25u | SW1 |
| 9 | LED | LED_0805_2012Metric | D1, D3, D4, D6, D8, D10, D11, D12 +1 |
| 8 | D_Small | D_1206_3216Metric | D2, D5, D7, D9, D14, D15, D16, D17 |
| 2 | 100NF | C_0805_2012Metric | C1, C2 |
| 1 | 1K/10K 680 E | R_0612_1632Metric | R1 |
| 16 | 1K/10K R_Small_US | R_0612_1632Metric | R2, R3, R4, R5, R6, R7, R8, R9 +8 |
| 8 | 1K/10K 10K | R_0612_1632Metric | R10, R11, R12, R13, R14, R15, R16, R17 |
ULN2803-Relay-Driver design files
The KiCad project lives in the sumitraj7766/ULN2803-Relay-Driver-PCB repository on GitHub; these links point at the commit this page was built from.
- SchematicULN2803 RELAY CARD.kicad_sch
- BOMBOM/bom.csv
ULN2803-Relay-Driver: common questions
How many components are on the ULN2803-Relay-Driver?
64 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the ULN2803-Relay-Driver design files?
From the sumitraj7766/ULN2803-Relay-Driver-PCB repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.
Can I use the ULN2803-Relay-Driver design in my own project?
The repository has no license, so all rights stay with sumitraj7766. Use it as a reference, and ask the author before reusing the design.