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

...
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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. 654-8019
Mfr. Part No.SFH 309 FA-4/5
£0.327
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
£0.117
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. 700-0776
Mfr. Part No.TEPT4400
BrandVishay
£0.365
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. 145-1923
Mfr. Part No.TEPT4400
BrandVishay
£0.215
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. 170-0779
Mfr. Part No.OPL550
BrandOptek
£1.136
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
£1.22
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. 165-2868
Mfr. Part No.TEFT4300
BrandVishay
£0.183
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. 708-2731
Mfr. Part No.TEFT4300
BrandVishay
£0.428
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. 168-5289
Mfr. Part No.LPT 80A
£0.198
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. 654-7993
Mfr. Part No.LPT 80A
£0.538
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. 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. 170-0768
Mfr. Part No.OP593B
BrandOptek
£0.468
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. 912-8526
Mfr. Part No.SFH 300 FA-3/4
£0.173
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. 654-8047
Mfr. Part No.SFH 300 FA-3/4
£0.412
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. 195-849
Mfr. Part No.SDP8436-003
BrandHoneywell
£2.00
Each
Units
- 15µs 15µs 1 17500µA 100nA 18 ° NPN 2 Through Hole Side Looker 4.57 x 4.29 x 3.3mm - -
RS Stock No. 912-8504
Mfr. Part No.SFH 3310
£0.272
Each (In a Bag of 2000)
Units
Infrared, Ultraviolet, Visible Light - - 1 8µA 3nA 150 ° NPN 2 Through Hole T-1 4 x 4 x 3.1mm 20mA -
RS Stock No. 654-7808
Mfr. Part No.SFH 3310
£0.816
Each (In a Pack of 5)
Units
Infrared, Ultraviolet, Visible Light - - 1 8µA 3nA 150 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 3.1mm 20mA -
RS Stock No. 146-1622
Mfr. Part No.SFH 300
£0.144
Each (In a Bag of 1000)
Units
Infrared, Visible Light 10µs 10µs 1 - 50nA 50 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.9 x 5.9 x 9mm 50mA -
RS Stock No. 665-5347
Mfr. Part No.SFH 300
£0.339
Each (In a Pack of 20)
Units
Infrared, Visible Light 10µs 10µs 1 - 50nA 50 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.9 x 5.9 x 9mm 50mA -
RS Stock No. 477-6335
Mfr. Part No.PT100MF0MP1
BrandSharp
£0.182
Each (In a Pack of 5)
Units
Infrared 6µs 5µs 1 - 100nA 30 ° NPN 2 Surface Mount - 3 x 1.5 x 2.2mm 20mA -