This is a perfect choice if you are in need of an illuminated push button! These metal (nickel plated brass) push buttons are a very tough, small, panel-mount momentary switch with an illuminated blue LED ring in a IP65 packaging. It is a SPDT with 12mm threading. This button is perfect for basic On/Off functions. Overall length (including leads) is 0.85" (22mm) and has small solder lugs for connection. These momentary buttons are rated up to 2A at 36v DC. The internal blue LED has a forward voltage of 2.7v DC at 20mA.
For running the LED, you should run a series dropping resistor based on your supply voltage:
- 5v: 130 ohm resistor (1/2 watt)
- 9v: 330 ohm resistor (1/2 watt)
- 12v: 510 ohm resistor (1/2 watt)