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. 915-4866
Mfr. Part No.SFH 3201-2/3-Z
SGD1.019
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. 654-8031
Mfr. Part No.SFH 300-3/4
SGD0.795
Each (In a Pack of 10)
units
Infrared, Visible Light 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. 184-6988
Mfr. Part No.1541141NAA570
SGD0.329
Each (On a Reel of 3000)
units
Infrared, Visible Light - - 1 - 100 (Collector Emitter)nA 150 ° NPN 2 Surface Mount 1104 3 x 1 x 2.02mm 20mA -
RS Stock No. 168-5384
Mfr. Part No.SFH 3605-3/4-Z
SGD0.549
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. 145-2619
Mfr. Part No.BPW85B
BrandVishay
SGD0.325
Each (In a Bag of 1000)
units
Infrared, Visible Light 2.3µs 2µs 1 4000µA 200nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.5mm 50mA -
RS Stock No. 665-5287
Mfr. Part No.BPY 62
SGD8.20
Each (In a Pack of 5)
units
Infrared, Visible Light 12µs 12µs 1 500µA 50nA 16 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 100mA -
RS Stock No. 654-9090
Mfr. Part No.BPX 82
SGD6.77
Each
units
- - - - - - - - 6 Through Hole DIP 7.4 x 2.1 x 3.6mm - -
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. 168-5317
Mfr. Part No.SFH 320-3/4-Z
SGD0.343
Each (On a Reel of 2000)
units
Infrared, Visible Light 7µs 7µs 1 1000µA 50nA 120 ° NPN 2 Surface Mount PLCC 3.4 x 3 x 2mm 15mA -
RS Stock No. 146-0737
Mfr. Part No.PT100MF0MP
BrandSharp
SGD0.365
Each (On a Reel of 2000)
units
Infrared 6µs 5µs 1 3.45mA 100nA ±15 ° Positive 2 Surface Mount SMD 3 x 1.5 x 2.2mm 20mA -
RS Stock No. 665-5252
Mfr. Part No.BPX 43-5
SGD8.098
Each (In a Pack of 5)
units
Infrared, Visible Light 18µs 18µs 1 15000µA 100nA 30 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 50mA -
RS Stock No. 168-5376
Mfr. Part No.SFH 309-5
SGD0.761
Each (In a Bag of 2000)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 7200µA 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 168-5383
Mfr. Part No.SFH 325 FA-3-Z
SGD0.489
Each (On a Reel of 2000)
units
Infrared 7µs 7µs 1 50µA 50nA 120 ° NPN 2 Surface Mount PLCC 4.2 x 4.2 x 3.8mm 15mA -
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