GB-R333RHD-5V - Round Type Integrated Resistor LED Lamp
The R333 series of 5 volt and 12 volt lamps contain an integral current limiting resistor in series with the LED.
This allows the lamp to be driven from a 5v/12v source without an external current limiter.
GaP for (R333HD-5V/12V, R333GD-5V/12V) GaAsP/GaP for (R333YD-5V/12V, R333SD-5V/12V) GaAlAs fo