The VEMT2000 and VEMT2020 series, from Vishay Semiconductor, is a family of silicon NPN epitaxial planar phototransistors. They are in surface mount (SMD) subminiature packages with a choice of lead options. The VEMT2000 and VEMT2020 have a black plastic package which provides a daylight filter, blocking out ambient visible light.
Suitable applications for the VEMT2000 and VEMT2020 phototransistors include; photo interrupters, miniature switches, detectors in automotive applications, counters, encoders and position sensors.

Features of the VEMT2000 and VEMT2020 phototransistors:
Subminiature package
Surface mounted (SMD)
Different lead types: GW and RGW
High radiant sensitivity
Fast response times
Angle of half intensity: 15°

IR Phototransistors, Vishay Semiconductor