120V, 50mA 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 120 volts and have a fixed output current of 50mA. Rated power dissipation is up to 2.3W (with adequate heatsinking).

They come in a small 2 lead surface mount package (403A case).

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

Made by OnSemi, part number NSIC2050JBT3G. Datasheet is here.