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. 654-9040
Mfr. Part No.SFH 3400-2/3-Z
SGD0.93
Each (In a Pack of 5)
units
Infrared, Visible Light 24µs 24µs 1 2600µA 100nA 120 ° NPN 3 Surface Mount DIP 2.1 x 2.7 x 1.05mm 50mA -
RS Stock No. 165-2739
Mfr. Part No.VEMT2000X01
BrandVishay
SGD0.38
Each (On a Reel of 6000)
units
Infrared - - 1 9000µA 100nA 30 ° NPN 2 Surface Mount - 2.3 x 2.3 x 2.77mm 50mA -
RS Stock No. 654-8738
Mfr. Part No.SFH 3100 F
SGD0.843
Each (In a Pack of 10)
units
Infrared 9µs 7µs 1 400µA 50nA 28 ° NPN 2 Through Hole Side Looker 3.1 x 2.2 x 4.1mm 50mA -
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 -
RS Stock No. 168-5291
Mfr. Part No.SFH 300-3/4
SGD0.353
Each (On a Tape of 1000)
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. 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. 778-1377
Mfr. Part No.SFH 3711
SGD0.919
Each (In a Pack of 10)
units
Infrared - - - 80µA 3nA ±60 ° NPN 2 Surface Mount - 2.1 x 0.95 x 1.35mm 20mA -
RS Stock No. 195-849
Mfr. Part No.SDP8436-003
BrandHoneywell
SGD2.63
Each
units
- 15µs 15µs 1 17500µA 100nA 18 ° NPN 2 Through Hole Side Looker 4.57 x 4.29 x 3.3mm - -
RS Stock No. 665-5369
Mfr. Part No.SFH 309 FA-3/4
SGD0.653
Each (In a Pack of 10)
units
Infrared 7µs 7µs 1 4500µA 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 171-5580
Mfr. Part No.RPT-38PB3F
BrandROHM
SGD0.72
Each (In a Pack of 20)
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. 184-1441
Mfr. Part No.QSD124
SGD0.701
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 39mA 6.1mm
RS Stock No. 913-3301
Mfr. Part No.SFH 3600-3/4-Z
SGD0.456
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. 654-8491
Mfr. Part No.SFH 325 FA-3/4-Z
SGD0.431
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. 805-0523
Mfr. Part No.QSB363ZR
SGD0.525
Each (In a Pack of 25)
units
Infrared 15µs 15µs 1 - 100nA 12 ° - 2 Surface Mount Subminiature 2.7 x 2.2 x 3mm 1.5mA -
RS Stock No. 145-1922
Mfr. Part No.BPW85A
BrandVishay
SGD0.347
Each (In a Bag of 1000)
units
Infrared, Visible Light 2.3µs 2µs 1 - 200nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.5mm 50mA -
RS Stock No. 184-1081
Mfr. Part No.QRD1113
SGD1.576
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. 170-9649
Mfr. Part No.SFH 325-4-Z
SGD0.489
Each (On a Reel of 2000)
units
Infrared, Visible Light 7µs 7µs 1 80µA 50nA 120 ° NPN 2 Surface Mount PLCC 4.2 x 4.2 x 3.8mm 15mA -
RS Stock No. 915-4884
Mfr. Part No.SFH 325-4-Z
SGD0.622
Each (In a Pack of 20)
units
Infrared, Visible Light 7µs 7µs 1 80µA 50nA 120 ° NPN 2 Surface Mount PLCC 4.2 x 4.2 x 3.8mm 15mA -
RS Stock No. 146-1622
Mfr. Part No.SFH 300
SGD0.294
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. 234-0978
Mfr. Part No.OP593B
BrandOptek
SGD1.07
Each
units
Infrared - - 1 4000µA 100nA - NPN 2 Through Hole TO-18 5.72 x 5.72 x 7.62mm 50mA -
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