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. 912-8576
Mfr. Part No.SFH 3710-3/4-Z
R 4.569
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. 654-8918
Mfr. Part No.SFH 3710-3/4-Z
R 9.058
Each (In a Pack of 5)
units
Infrared, Ultraviolet, Visible Light - - 1 570µA 3nA 120 ° NPN 2 Surface Mount - 2.1 x 1.35 x 0.9mm 20mA -
RS stock no. 915-4866
Mfr. Part No.SFH 3201-2/3-Z
R 6.087
Each (In a Pack of 20)
units
Infrared, Visible Light 24µs 24µs 1 4200µA 200nA 120 ° NPN 6 Surface Mount SMD 4.2 x 3.4 x 2.1mm 50mA -
RS stock no. 170-9643
Mfr. Part No.SFH 3201-2/3-Z
R 6.081
Each (On a Reel of 1000)
units
Infrared, Visible Light 24µs 24µs 1 4200µA 200nA 120 ° NPN 6 Surface Mount SMD 4.2 x 3.4 x 2.1mm 50mA -
RS stock no. 145-1923
Mfr. Part No.TEPT4400
BrandVishay
R 3.56
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
R 7.081
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. 146-1607
Mfr. Part No.SFH 3710-2/3-Z
R 4.003
Each (On a Reel of 3000)
units
Infrared, Ultraviolet, Visible Light - - 1 350µA 3nA 120 ° NPN 2 Surface Mount - 2.1 x 1.35 x 0.9mm 20mA -
RS stock no. 539-836
Mfr. Part No.SFH 3710-2/3-Z
R 4.005
Each (In a Pack of 10)
units
Infrared, Ultraviolet, Visible Light - - 1 350µA 3nA 120 ° NPN 2 Surface Mount - 2.1 x 1.35 x 0.9mm 20mA -
RS stock no. 165-2383
Mfr. Part No.TEPT5600
BrandVishay
R 3.56
Each (In a Bag of 4000)
units
Infrared, Visible Light - - 1 - 50nA 40 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.75 x 5.75 x 8mm 20mA -
RS stock no. 700-0779
Mfr. Part No.TEPT5600
BrandVishay
R 7.46
Each (In a Pack of 10)
units
Infrared, Visible Light - - 1 - 50nA 40 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.75 x 5.75 x 8mm 20mA -
RS stock no. 665-5356
Mfr. Part No.SFH 309
R 5.398
Each (In a Pack of 20)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 - 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS stock no. 146-1624
Mfr. Part No.SFH 309
R 2.244
Each (In a Bag of 2000)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 - 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS stock no. 169-2875
Mfr. Part No.IRA-E700ST0
BrandMurata
R 29.688
Each (In a Box of 100)
units
Infrared - - - - - 22.5 ° - 3 Through Hole - 9.2 x 9.2 x 4.7mm - -
RS stock no. 146-1625
Mfr. Part No.SFH 310
R 2.064
Each (In a Bag of 2000)
units
Infrared, Visible Light 12µs 12µs 1 - 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS stock no. 146-1622
Mfr. Part No.SFH 300
R 2.987
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. 665-5299
Mfr. Part No.BPY 62-4
R 30.36
Each (In a Pack of 5)
units
Infrared, Visible Light 12µs 12µs 1 5800µA 50nA 16 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 100mA -
RS stock no. 201-7729
Mfr. Part No.IRA-E700ST0
BrandMurata
R 53.86
Each
units
Infrared - - - - - 22.5 ° - 3 Through Hole - 9.2 x 9.2 x 4.7mm - -
RS stock no. 665-5347
Mfr. Part No.SFH 300
R 4.782
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. 168-5370
Mfr. Part No.BPY 62-4
R 21.728
Each (In a Bag of 1000)
units
Infrared, Visible Light 12µs 12µs 1 5800µA 50nA 16 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 100mA -
RS stock no. 665-5384
Mfr. Part No.SFH 310
R 4.251
Each (In a Pack of 20)
units
Infrared, Visible Light 12µs 12µs 1 - 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -