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. 665-5243
Mfr. Part No.BPX 43-4/5
€2.768
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. 184-1081
Mfr. Part No.QRD1113
€1.096
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. 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. 876-8694
Mfr. Part No.BPX 38-4
€3.71
Each (In a Pack of 5)
units
Infrared 15µs 15µs 1 2300µA 20 (≤ 100)nA ±40 ° NPN 3 Through Hole TO-18 4.8 (Dia.) x 5.5mm 50mA 4.8mm
RS Stock No. 665-5233
Mfr. Part No.BP 103
€0.988
Each (In a Pack of 5)
units
Infrared, Visible Light 12µs 12µs 1 80µA 50nA 110 ° NPN 3 Through Hole TO-18 5.5 x 5.5 x 3.6mm 100mA -
RS Stock No. 168-5383
Mfr. Part No.SFH 325 FA-3-Z
€0.199
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. 915-4881
Mfr. Part No.SFH 325-3-Z
€0.328
Each (In a Pack of 20)
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. 913-3301
Mfr. Part No.SFH 3600-3/4-Z
€0.264
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. 169-7607
Mfr. Part No.SD5410-002
BrandHoneywell
€10.672
Each (In a Bag of 100)
units
Infrared 75µs 75µs 1 4000µA 250nA 12 ° NPN 3 Through Hole TO-46 5.56 x 5.56 x 3.89mm - -
RS Stock No. 805-0517
Mfr. Part No.QSB363
€0.365
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. 654-8441
Mfr. Part No.SFH 3204-Z
€0.231
Each (In a Pack of 10)
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. 700-0779
Mfr. Part No.TEPT5600
BrandVishay
€0.40
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. 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. 315-876
Mfr. Part No.PT481E00000F
BrandSharp
€1.00
Each
units
- 70000ns 80µs 1 25000µA 1000nA 26 ° NPN 2 Through Hole Side Looker 3 x 2.95 x 4mm 50mA -
RS Stock No. 168-5320
Mfr. Part No.SFH 3400-2/3-Z
€0.353
Each (On a Reel of 2000)
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. 177-7552
Mfr. Part No.TEKT5400S
BrandVishay
€0.266
Each (In a Bag of 2000)
units
Visible Light 5µs 6µs 1 4000µA 100nA ±37 ° NPN 2 Through Hole Side Looker 5 x 2.65 x 5mm 100mA -
RS Stock No. 168-5551
Mfr. Part No.BPX 43-4
€2.058
Each (In a Bag of 1000)
units
Infrared 15µs 15µs 1 9500µA 20 (≤ 100)nA ±15 ° NPN 3 Through Hole TO-18 4.8 (Dia.) x 6.2mm 50mA 4.8mm
RS Stock No. 146-1625
Mfr. Part No.SFH 310
€0.131
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. 170-9651
Mfr. Part No.SFH 3710-Z
€0.321
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. 171-5580
Mfr. Part No.RPT-38PB3F
BrandROHM
€0.422
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
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