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. 710-3935
Mfr. Part No.VEMT2000X01
BrandVishay
€0.558
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. 915-4890
Mfr. Part No.SFH 3710-Z
€0.896
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. 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. 168-5384
Mfr. Part No.SFH 3605-3/4-Z
€0.209
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. 184-1562
Mfr. Part No.QRD1113
€23.26
1 Pack of 10
Pack(s)
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. 184-7241
Mfr. Part No.1541201NEA400
€0.272
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. 146-2107
Mfr. Part No.QSB363
€0.165
Each (In a Bag of 1000)
units
Infrared 15µs 15µs 1 - 100nA 12 ° - 2 Surface Mount Subminiature 2.7 x 2.2 x 3mm 1.5mA -
RS Stock No. 184-1423
Mfr. Part No.QSD123
€8.86
1 Pack of 25
Pack(s)
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. 168-5370
Mfr. Part No.BPY 62-4
€2.411
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. 171-5419
Mfr. Part No.RPT-38PB3F
BrandROHM
€0.50
Each
units
Visible Light - - 1 2 (Minimum)mA 0.5µA ±36 ° NPN 2 Through Hole DIP 3.4 (Dia.) x 5.2mm 30mA 3.4mm
RS Stock No. 170-9648
Mfr. Part No.SFH 325-3-Z
€0.235
Each (On a Reel of 2000)
units
Infrared, Visible Light 7µs 7µs 1 50µA 50nA 120 ° NPN 2 Surface Mount PLCC 4.2 x 4.2 x 3.8mm 15mA -
RS Stock No. 805-0549
Mfr. Part No.QTLP610CPDTR
€0.288
Each (In a Pack of 10)
units
Infrared 15µs 15µs 1 - 100nA 80 ° - 2 Surface Mount - 3.2 x 2.2 x 1.1mm 0.5mA -
RS Stock No. 168-5318
Mfr. Part No.SFH 320 FA-3/4-Z
€0.157
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 -
RS Stock No. 665-5426
Mfr. Part No.SFH 3211 FA
€0.157
Each (In a Pack of 20)
units
Infrared 7µs 7µs 1 16µA 200nA 120 ° NPN 2 Surface Mount - 3.4 x 3 x 2mm 15mA -
RS Stock No. 665-5299
Mfr. Part No.BPY 62-4
€2.918
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. 710-4926
Mfr. Part No.TEMT1020
BrandVishay
€0.571
Each (In a Pack of 10)
units
Infrared 2.3µs 2µs 1 7000µA 200nA 30 ° NPN 2 Surface Mount Subminiature 2.5 x 2 x 2.7mm 50mA -
RS Stock No. 654-8491
Mfr. Part No.SFH 325 FA-3/4-Z
€0.243
Each (In a Pack of 10)
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. 184-6984
Mfr. Part No.1541411NEA210
€0.174
Each (On a Reel of 2000)
units
Infrared - - 1 - 100 (Collector Emitter)nA 120 ° NPN 2 Surface Mount 3528 3.5 x 2.8 x 1.9mm 20mA -
RS Stock No. 654-8047
Mfr. Part No.SFH 300 FA-3/4
€0.453
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. 815-1263
Mfr. Part No.BPW85
BrandVishay
€0.464
Each (In a Pack of 25)
units
Infrared, Visible Light 2.3µs 2µs 1 8000µA 200nA ±25 ° NPN 2 Through Hole 3mm (T-1) 3 x 4.5mm 50mA 3mm
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This family of NPN silicon phototransistors, from OSRAM ...
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This family of NPN silicon phototransistors, from OSRAM Opto Semiconductors, are a range of 5mm (T-1 3/4) through-hole devices They have both clear or black plastic lenses, the diffused lenses being used for daylight filters. Suitable applications include; computer-controlled flashes, ...
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This family of NPN silicon phototransistors, from OSRAM Opto Semiconductors, are a range of 3mm (T-1) through-hole devices They have both clear or black plastic lenses, the diffused lenses being used for daylight filters. Suitable applications include; photointerrupters, industrial electronics ...