Phototransistors

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

...
Read more Read less

Filters

Viewing 1 - 20 of 288 products
Results per page
Description Price Spectrums Detected Typical Fall Time Typical Rise Time Number of Channels Maximum Light Current Maximum Dark Current Angle of Half Sensitivity Polarity Number of Pins Mounting Type Package Type Dimensions Collector Current Diameter
RS Stock No. 201-7729
Mfr. Part No.IRA-E700ST0
BrandMurata
£2.20
Each
Units
Infrared - - - - - 22.5 ° - 3 Through Hole - 9.2 x 9.2 x 4.7mm - -
RS Stock No. 169-2875
Mfr. Part No.IRA-E700ST0
BrandMurata
£1.56
Each (In a Box of 100)
Units
Infrared - - - - - 22.5 ° - 3 Through Hole - 9.2 x 9.2 x 4.7mm - -
RS Stock No. 654-8019
Mfr. Part No.SFH 309 FA-4/5
£0.25
Each (In a Pack of 10)
Units
Infrared 7µs 7µs 1 7200µA 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 912-8514
Mfr. Part No.SFH 309 FA-4/5
£0.12
Each (In a Bag of 2000)
Units
Infrared 7µs 7µs 1 7200µA 200nA 24 ° NPN 2 Through Hole T-1 4 x 4 x 5.2mm 15mA -
RS Stock No. 145-1923
Mfr. Part No.TEPT4400
BrandVishay
£0.148
Each (In a Bag of 1000)
Units
Visible Light - - 1 200µA 50nA 60 ° - 2 Through Hole 3mm (T-1) 3.2 x 3.2 x 4.5mm 20mA -
RS Stock No. 700-0776
Mfr. Part No.TEPT4400
BrandVishay
£0.341
Each (In a Pack of 10)
Units
Visible Light - - 1 200µA 50nA 60 ° - 2 Through Hole 3mm (T-1) 3.2 x 3.2 x 4.5mm 20mA -
RS Stock No. 170-0779
Mfr. Part No.OPL550
BrandOptek
£1.046
Each (In a Bag of 50)
Units
Infrared 25ns 25ns 1 - - - - 3 Through Hole Side Looker 4.45 x 2.34 x 5.72mm - -
RS Stock No. 455-7954
Mfr. Part No.OPL550
BrandOptek
£1.162
Each (In a Pack of 5)
Units
Infrared 25ns 25ns 1 - - - - 3 Through Hole Side Looker 4.45 x 2.34 x 5.72mm - -
RS Stock No. 708-2731
Mfr. Part No.TEFT4300
BrandVishay
£0.374
Each (In a Bag of 20)
Units
Infrared 2.3µs 2µs 1 3200µA 200nA 60 ° NPN 2 Through Hole T-1 3.2 x 3.9 x 4.5mm 50mA -
RS Stock No. 165-2868
Mfr. Part No.TEFT4300
BrandVishay
£0.142
Each (In a Bag of 1000)
Units
Infrared 2.3µs 2µs 1 3200µA 200nA 60 ° NPN 2 Through Hole T-1 3.2 x 3.9 x 4.5mm 50mA -
RS Stock No. 654-7993
Mfr. Part No.LPT 80 A
£0.298
Each (In a Pack of 10)
Units
Infrared, Visible Light 10µs 10µs 1 3200µA 3nA 70 ° NPN 2 Through Hole Side Looker 4.57 x 2.54 x 5.84mm 50mA -
RS Stock No. 168-5289
Mfr. Part No.LPT 80 A
£0.195
Each (In a Box of 2000)
Units
Infrared, Visible Light 10µs 10µs 1 3200µA 3nA 70 ° NPN 2 Through Hole Side Looker 4.57 x 2.54 x 5.84mm 50mA -
RS Stock No. 170-0768
Mfr. Part No.OP593B
BrandOptek
£0.482
Each (In a Bag of 500)
Units
Infrared - - 1 4000µA 100nA - NPN 2 Through Hole TO-18 5.72 x 5.72 x 7.62mm 50mA -
RS Stock No. 234-0978
Mfr. Part No.OP593B
BrandOptek
£0.54
Each
Units
Infrared - - 1 4000µA 100nA - NPN 2 Through Hole TO-18 5.72 x 5.72 x 7.62mm 50mA -
RS Stock No. 654-8047
Mfr. Part No.SFH 300 FA-3/4
£0.335
Each (In a Pack of 10)
Units
Infrared 10µs 10µs 1 7700µA 50nA 50 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.9 x 5.9 x 9mm 50mA -
RS Stock No. 912-8526
Mfr. Part No.SFH 300 FA-3/4
£0.142
Each (In a Bag of 1000)
Units
Infrared 10µs 10µs 1 7700µA 50nA 50 ° NPN 2 Through Hole T-1 3/4 5.9 x 5.9 x 9mm 50mA -
RS Stock No. 169-7626
Mfr. Part No.SDP8436-003
BrandHoneywell
£0.727
Each (In a Bag of 100)
Units
- 15000ns 15000ns 1 17500µA 100nA 18 ° NPN 2 Through Hole Side Looker 4.57 x 4.29 x 3.3mm - -
RS Stock No. 195-849
Mfr. Part No.SDP8436-003
BrandHoneywell
£1.46
Each
Units
- 15000ns 15000ns 1 17500µA 100nA 18 ° NPN 2 Through Hole Side Looker 4.57 x 4.29 x 3.3mm - -
RS Stock No. 195-287
Mfr. Part No.OPL810
BrandOptek
£2.50
Each
Units
Infrared 70ns 70ns 1 - - - - 3 Through Hole TO-18 5.84 x 5.84 x 6.86mm - -
RS Stock No. 170-0728
Mfr. Part No.OPL810
BrandOptek
£2.253
Each (In a Bag of 25)
Units
Infrared 70ns 70ns 1 - - - - 3 Through Hole TO-18 5.84 x 5.84 x 6.86mm - -
Related Products
This family of NPN silicon phototransistors, from OSRAM ...
Description:
This family of NPN silicon phototransistors, from OSRAM Opto Semiconductors, are a range of 5mm (T-1 3/4) through-hole devices. They have both clear or black plastic lenses, the diffused lenses being used for daylight filters. Suitable applications include; computer-controlled flashes, photointerrupters, industrial electronics and for control/drive circuits. 5mm (T-1 3/4) ...
This family of NPN silicon phototransistors, from OSRAM ...
Description:
This family of NPN silicon phototransistors, from OSRAM Opto Semiconductors, are a range of 3mm (T-1) through-hole devices. They have both clear or black plastic lenses, the diffused lenses being used for daylight filters. Suitable applications include; photointerrupters, industrial electronics and for control/drive circuits. Standard 3mm (T-1) packageThrough-hole mounting.
This family of NPN silicon phototransistors, from OSRAM ...
Description:
This family of NPN silicon phototransistors, from OSRAM Opto Semiconductors, are a range of 5mm (T-1 3/4) through-hole devices. They have both clear or black plastic lenses, the diffused lenses being used for daylight filters. Suitable applications include; computer-controlled flashes, photointerrupters, industrial electronics and for control/drive circuits. 5mm (T-1 3/4) ...
The PT100MC0MPx series of phototransistors, from Sharp, are ...
Description:
The PT100MC0MPx series of phototransistors, from Sharp, are compact and low-profile surface-mount phototransistors that can be mounted for either top or side-looking. They have a plastic moulded package with a transparent resin lens. The PT100MC0MPx has a domed lens which enables a narrow acceptance angle. Suitable applications for the PT100MC0MPx ...