Relay Interface Board

Description

This board with 24x42mm dimensions should be used as switching interface, it has 3 kind of interfaces :

- Relay 12V 2RT.

- Led with transistor open collector.

- Resistor circuit to convert signal from 5V to 3.3V.

Summary

• Schematic

• Bill of material

• PCB

• Assembly

• 3D Model

Schematic

Download here the schematic on PDF format

Bill of material

Top and bottom view Ref Description Manufacturer / Reference R11,R12 Resistor 1KR 5% 0603 All brands R7,R8,R9 Resistor 10KR 5% 0603 All brands R10 Resistor 2.2KR 5% 0603 All brands R6 Resistor 5.6KR 5% 0603 All brands Q1,Q2 transistor BC846 STO23 All brands D1 Diode BAS16 All brands RL1 Relay 2RT 12V TYCO / V23105A5003A201 or equivalent

PCB

The board dimensions are 24x42mm, as the PCB prototype standard dimensions are 100x100mm, it contains 2 boards.

So you have to cut the PCB on the red line.

Download here the manufacturing files

Assembly

Top view

Bottom view

Dimensions

Download here the top view of a board in PDF format     
Download here the bottom view of a board in PDF format     
Download here the dimensions of the board     

3D Model

Here is the 3D model of the board to check the mechanical integration on your design :

Download here the step file