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. 455-7954
Mfr. Part No.OPL550
BrandOptek
€1.448
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. 577-544A
Mfr. Part No.PT480E
BrandSharp
€0.22
Each (In a Pack of 25)
units
Infrared 3.5µs 3µs - - 1000nA 13 ° NPN 2 Through Hole Side Looker 3 x 2.95 x 21.5mm 20mA -
RS Stock No. 177-5961
Mfr. Part No.PT480E
BrandSharp
€0.144
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 912-8295
Mfr. Part No.SFH 320 FA-Z
€0.118
Each (On a Reel of 2000)
units
Infrared 8µs 8µs - - 50nA ±60 ° NPN 2 Surface Mount Top LED 3.4 x 3 x 1.92mm 15mA -
RS Stock No. 915-4890
Mfr. Part No.SFH 3710-Z
€0.997
Each (In a Pack of 20)
units
Infrared, Ultraviolet, Visible Light - - 1 12.5µA 3nA 120 ° NPN 2 Surface Mount SMD 2.1 x 1.35 x 0.9mm 20mA -
RS Stock No. 159-6490
Mfr. Part No.BPW96C
BrandVishay
€0.27
Each (In a Bag of 1000)
units
Infrared, Visible Light 2.3µs 2µs 1 15000µA 200nA 40 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.75 x 5.75 x 8.6mm 50mA -
RS Stock No. 654-8851
Mfr. Part No.SFH 314-2/3
€0.137
Each (In a Pack of 10)
units
Infrared, Visible Light 14µs 14µs 1 8600µA 200nA 80 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.9 x 5.9 x 6.9mm 50mA -
RS Stock No. 168-5550
Mfr. Part No.BPX 38-4
€1.015
Each (In a Bag of 1000)
units
Infrared 15µs 15µs 1 2300µA 20 (≤ 100)nA ±40 ° NPN 3 Through Hole TO-18 4.8 (Dia.) x 5.5mm 50mA 4.8mm
RS Stock No. 184-1083
Mfr. Part No.QSD123
€0.199
Each (In a Bag of 250)
units
Infrared 7µs 7µs 1 - 100nA ±12 ° - 2 Through Hole T-1 3/4 6.1 Dia. x 8.77mm 16mA 6.1mm
RS Stock No. 184-1081
Mfr. Part No.QRD1113
€1.096
Each (In a Bag of 100)
units
Infrared 50µs 10µs 1 - 100nA - - 4 Through Hole Custom 4L 4.39 x 6.1 x 4.65mm 0.3 (Minimum)mA -
RS Stock No. 168-5289
Mfr. Part No.LPT 80A
€0.226
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. 654-8019
Mfr. Part No.SFH 309 FA-4/5
€0.355
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. 912-8299
Mfr. Part No.SFH 3410-Z
€0.313
Each (On a Reel of 2000)
units
Infrared - - - - 50nA ±60 ° NPN 3 Surface Mount Smart DIL 2.7 x 2.1 x 1.05mm 20mA -
RS Stock No. 700-0782
Mfr. Part No.VEMT2020X01
BrandVishay
€0.144
Each (In a Pack of 20)
units
Infrared - - 1 9000µA 100nA 30 ° NPN 2 Surface Mount - 2.3 x 2.3 x 2.77mm 50mA -
RS Stock No. 182-8043
Mfr. Part No.RPT-37PB3F
BrandROHM
€0.231
Each (In a Bag of 2000)
units
Infrared 10µs 10µs 1 2 (Minimum)mA 0.5µA ±36 ° - 2 Through Hole - 3.8 Dia. x 5.2mm 30mA 3.8mm
RS Stock No. 665-5404
Mfr. Part No.SFH 314 FA
€0.224
Each (In a Pack of 20)
units
Infrared 14µs 14µs 1 - 200nA 80 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.9 x 5.9 x 6.9mm 50mA -
RS Stock No. 184-6985
Mfr. Part No.1541201NC3060
€0.174
Each (On a Reel of 2000)
units
Infrared - - 1 - 100 (Collector Emitter)nA 30 ° NPN 2 Surface Mount 1206 3.2 x 1.6 x 1.85mm 20mA -
RS Stock No. 913-3301
Mfr. Part No.SFH 3600-3/4-Z
€0.265
Each (On a Reel of 2000)
units
Infrared, Visible Light 45µs 45µs 1 500µA 50nA 40 ° - 2 Surface Mount - 3.3 x 2.35 x 1.7mm 15mA -
RS Stock No. 169-7618
Mfr. Part No.SD2440-003
BrandHoneywell
€3.034
Each (In a Bag of 100)
units
- 15µs 15µs 1 4000µA 100nA 48 ° NPN 2 Panel Mount Pill 1.57 x 1.57 x 3.18mm - -
RS Stock No. 168-5318
Mfr. Part No.SFH 320 FA-3/4-Z
€0.154
Each (On a Reel of 2000)
units
Infrared 7µs 7µs 1 1000µA 50nA 120 ° NPN 2 Surface Mount PLCC 3.4 x 3 x 2mm 15mA -
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