Energy label

Compare list full


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



Shop our range of Phototransistors supplies & accessories. Free Next Day Delivery. Browse our latest Phototransistors offers.

Phototransistors, Semiconductor Device | RS

Phototransistors

OPL550 Optek Through Hole 3-Pin Side Looker package

OP804SL Optek Through Hole 3-Pin TO-18 package

OP802WSL Optek Through Hole 3-Pin TO-18 package

OP593B Optek Through Hole 2-Pin TO-18 package

Optek OP593B IR Phototransistor, Through Hole 2-Pin TO-18 package

TEMT1040 Vishay, Day Light Phototransistor

Buy from our selection of phototransistors from Onsemi. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Onsemi Phototransistors | RS

Buy from our selection of phototransistors from Optek. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Optek Phototransistors | RS Components

Buy from our selection of phototransistors from Honeywell. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Honeywell Phototransistors | RS

<p>Honeywell phototransistors are semiconductors that use light energy and convert it to an electrical signal. The current flowing in between the emitter and collector is dependent upon the level of light received. </p><p>Phototransistors are either two or three terminal devices. They are more sensitive to light making them more suitable in a number of light sensing applications, as well as producing a higher current than a photodiode and being immune to noise interference. </p><p>Light enters at the base region of the phototransistor, where it causes hole electron pairs to be generated, these electron pairs then move with the electric field and provide the base current. </p><h2>Why Use Honeywell Transistors? </h2><p>Honeywell transistors are small and ultra-thin, they are highly sensitive and are ideal for using in many applications and devices as well as being relatively inexpensive. They are simple to fit and can provide an instantaneous output making the Honeywell phototransistor an ideal choice in a variety of applications and devices. </p><h2>Honeywell phototransistors Applications</h2><ul><li>Printers</li><li>Optoelectronics</li><li>Industrial electronics</li><li>Security devices</li><li>Home electronics</li><li>Optoelectronics</li><li>Lighting equipment </li></ul><p>Honeywell offer a range of phototransistors to meet all of your individual requirements and needs. They are a perfect choice over a photodiode due to their faster response time. </p>

Optek Phototransistors

Popular Searches

Related links