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. 184-1423
Mfr. Part No.QSD123
SGD0.62
Each (In a Pack of 25)
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. 168-5316
Mfr. Part No.SFH 314-2/3
SGD0.33
Each (On a Tape of 1000)
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. 184-7228
Mfr. Part No.1541201NC3060
SGD0.543
Each (In a Pack of 25)
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. 184-1084
Mfr. Part No.QSD124
SGD0.449
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 39mA 6.1mm
RS Stock No. 665-5413
Mfr. Part No.SFH 320-3-Z
SGD0.571
Each (In a Pack of 10)
units
Infrared, Visible Light 7µs 7µs 1 650µA 50nA 120 ° NPN 2 Surface Mount PLCC 3.4 x 3 x 2mm 15mA -
RS Stock No. 168-5372
Mfr. Part No.SFH 300 FA
SGD0.338
Each (In a Bag of 1000)
units
Infrared 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. 913-3291
Mfr. Part No.SFH 3600-Z
SGD0.423
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. 168-7390
Mfr. Part No.PS1195WB
SGD0.34
Each (On a Reel of 4000)
units
Infrared 9µs 8µs 1 7000µA 0.1µA 45 ° NPN 2 Surface Mount - 3.2 x 1.6 x 1.85mm 20mA -
RS Stock No. 455-8014
Mfr. Part No.ST23G, C
BrandKodenshi
SGD1.45
Each (In a Pack of 5)
units
Infrared 4.8µs 3.2µs - 20mA 100nA 30 ° NPN 2 Through Hole 5mm (T-1 3/4) 4.6 x 2.54 x 4.6mm 40mA -
RS Stock No. 168-5306
Mfr. Part No.SFH 325 FA-3/4-Z
SGD0.313
Each (On a Reel of 2000)
units
Infrared 7µs 7µs 1 80µA 50nA 120 ° NPN 2 Surface Mount PLCC 4.2 x 4.2 x 3.8mm 15mA -
RS Stock No. 136-9671
Mfr. Part No.BPX 81-3/4
SGD0.865
Each (In a Bag of 1000)
units
- 6µs 6µs 1 >400µA 1 (≤ 50)nA ±18 ° NPN 2 Through Hole Miniature Array 2.2 x 2 x 3.45mm 50mA -
RS Stock No. 700-0782
Mfr. Part No.VEMT2020X01
BrandVishay
SGD0.939
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. 170-9651
Mfr. Part No.SFH 3710-Z
SGD0.627
Each (On a Reel of 3000)
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. 802-3317
Mfr. Part No.QSE113
SGD0.735
Each (In a Pack of 20)
units
Infrared 8µs 8µs 1 - 100nA 25 ° - 2 Through Hole Side Looker 4.44 x 2.54 x 5.08mm 1.50mA -
RS Stock No. 805-0517
Mfr. Part No.QSB363
SGD0.621
Each (In a Pack of 20)
units
Infrared 15µs 15µs 1 - 100nA 12 ° - 2 Surface Mount Subminiature 2.7 x 2.2 x 3mm 1.5mA -
RS Stock No. 654-8542
Mfr. Part No.SFH 310-2/3
SGD0.71
Each (In a Pack of 10)
units
Infrared, Visible Light 12µs 12µs 1 4800µA 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS Stock No. 146-2097
Mfr. Part No.QSE113
SGD0.475
Each (In a Bag of 500)
units
Infrared 8µs 8µs 1 - 100nA 25 ° - 2 Through Hole Side Looker 4.44 x 2.54 x 5.08mm 1.50mA -
RS Stock No. 184-7241
Mfr. Part No.1541201NEA400
SGD0.543
Each (In a Pack of 25)
units
Infrared - - 1 - 100 (Collector Emitter)nA 140 ° NPN 2 Surface Mount 1206 3.2 x 1.6 x 1.1mm 20mA -
RS Stock No. 912-8576
Mfr. Part No.SFH 3710-3/4-Z
SGD0.484
Each (On a Reel of 3000)
units
Infrared, Ultraviolet, Visible Light - - 1 570µA 3nA 120 ° NPN 2 Surface Mount SMD 2.1 x 1.35 x 0.9mm 20mA -
RS Stock No. 168-5318
Mfr. Part No.SFH 320 FA-3/4-Z
SGD0.343
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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