The PT204-6B by Everlight is a infrared phototransistor used for detecting light signals. It has a detection distance of 5-6mm and a peak spectral response of 950nm. The PT204-6B has a forward current of 50mA, a reverse voltage of 3.0V, a dark current of less than 10 micro amps, and a collector-emitter saturation voltage of 0.4V. This part is designed for use in a wide range of applications and is suitable for a variety of industries, such as security, automotive, and medical systems. Furthermore, it is RoHS compliant.