The MTD8000N4-T from Marktech Optoelectronics is a Phototransistor that has a peak wavelength of 880 nm. It has a spectral sensitivity of 400 nm - 1100 nm and switching time (rise/fall) of 10 µs. This phototransistor has a light current of 3 mA and maximum dark current of 100 nA. It has a C-E saturation voltage of 0.2 V and angular response of ±12 deg. This phototransistor is available in a compact TO-18 metal can domed package that measures 19.7 (L) mm x 2.54 (Ø) mm and is ideal for optical switches, edge sensing, fiber optical communications, and smoke detector applications.