The PT-A6-AC-5-PN-520 Phototransistor manufactured by Token is a 5mm optical device with a peak emission wavelength of 520nm, a voltage rating of 60V, and a power dissipation of 50mW. The lens is transparent to allow maximum light gathering.High-speed response, high sensitivity, and excellent quality make it suitable for a wide variety of applications, ranging from lighting control in cars and portable devices, to distance sensing and object detection. This phototransistor is able to detect changes in light intensity in order to turn electrical conductivity on or off.