The OPTEK TECHNOLOGY OP505B is a versatile NPN Silicon Phototransistor designed for a wide range of applications. With a spectral response of 850-1000nm, it is capable of accurately detecting infrared light. The phototransistor has a 20° field of view, allowing for precise sensing in a focused area. With a low dark current of only 100nA, the OP505B ensures excellent sensitivity even in low light conditions. Its robust construction allows for a breakdown voltage of up to 30V, ensuring reliable operation in demanding environments. The phototransistor is housed in a compact T1 (3mm) package, making it suitable for various installation requirements.