Diotec 20mA surface mount LED constant current IC

These are not really resistors, but are in fact a linear constant current driver. They have a maximum input voltage of 90 volts and have a fixed output current of 20mA.

They come in a DO-214AC surface mount package.

Use them just like a resistor. The only requirements are that you don't exceed their 1W power dissipation rating and that you connect them the right way around!

Made by Diotec, part number CL20M35R7. Datasheet is here.