A Phototransistor is a two-lead or three-lead semiconductor that is more sensitive than a photodiode. It senses light levels and uses them to alter currents to create an electrical signal. The bipolar semiconductor is can be made from silicon or another semi-conductive material. How do Phototransistors work? Once detection of light such as IR (infrared), visible light or UV (Ultraviolet) is successful, the device will alter a current flowing between an emitter and collector, depending on the light and level of intensity it receives. Features and Benefits Reflow surface-mounting support Small, ultra-thin High sensitivity Electromagnetic noise resistance High linearity Produce a higher current than photodiodes Where might I use a Phototransistor? A photo transistor can be used in many different devices and applications such as: Photo interrupters Industrial electronics Human detection devices TV Air conditioning Digital photo-frames PCs or Laptops Automatic switches (lighting equipment) IP cameras Security devices Home electronics
Description:
The TIL197, TIL198, TIL199 series of optically coupled
isolators consist of infrared light emitting diodes and NPN silicon photo darlingtons in space efficient dual in line plastic packages. The standard parts TIL197, TIL198, TIL199 are tested for a CTR of ...
Description:
The PT3009 series are constructed from a Gallium
Arsenide Infrared Emitting Diode and Silicon Triac Bi directional (double Thyristor) Detector, housed in a plastic package. Surface Mount Option Available. All electrical parameters are 100% tested by manufacturing. Specifications are guaranteed ...
Description:
The OPL81x series, from Optek Technology, are a
family of photologic sensors. They are in TO-18 hermetically sealed metal can packages. They contain a monolithic integrated circuit which consists of a photodiode, linear amplifier, voltage regulator and a Schmitt trigger ...
Description:
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 ...