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. 168-5304
Mfr. Part No.BPY 62-3/4
TWD40.70
Each (On a Tape 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. 171-5580
Mfr. Part No.RPT-38PB3F
BrandROHM
TWD25.50
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. 184-1083
Mfr. Part No.QSD123
TWD8.00
Each (In a Bag of 250)
units
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. 497-5352
Mfr. Part No.SFH 3410-Z
TWD38.60
Each (In a Pack of 5)
units
Infrared, Ultraviolet, Visible Light - - 1 3.2µA 3nA 120 ° NPN 3 Surface Mount DIP 2.1 x 2.7 x 1.05mm 20mA -
New
RS Stock No. 215-1758
Mfr. Part No.1540031NC6090
TWD8.80
Each (On a Reel of 500)
units
Infrared - - 1 0.02µA - 60 ° - 2 Through Hole 3mm (T-1) - - -
RS Stock No. 915-4884
Mfr. Part No.SFH 325-4-Z
TWD13.10
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. 184-6983
Mfr. Part No.1541411NBA210
TWD7.90
Each (On a Reel of 2000)
units
Infrared, Visible Light - - 1 - 100 (Collector Emitter)nA 120 ° NPN 2 Surface Mount 3528 3.5 x 2.8 x 1.9mm 20mA -
RS Stock No. 170-9643
Mfr. Part No.SFH 3201-2/3-Z
TWD19.30
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. 454-860
Mfr. Part No.SFH 3010-Z
TWD10.70
Each (In a Pack of 10)
units
Infrared, Visible Light 7µs 7µs 1 25µA 50nA 160 ° NPN 2 Surface Mount - 1.3 x 0.8 x 0.65mm 15mA -
RS Stock No. 146-2097
Mfr. Part No.QSE113
TWD10.70
Each (In a Bag of 500)
units
Infrared 8µs 8µs 1 - 100nA 25 ° - 2 Through Hole Side Looker 4.44 x 2.54 x 5.08mm 1.50mA -
RS Stock No. 184-6985
Mfr. Part No.1541201NC3060
TWD6.80
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. 170-9642
Mfr. Part No.SFH 3201-Z
TWD14.10
Each (On a Reel of 1000)
units
Infrared, Visible Light 24µs 24µs 1 - 200nA 120 ° NPN 6 Surface Mount SMD 4.2 x 3.4 x 2.1mm 50mA -
RS Stock No. 165-6187
Mfr. Part No.BPW76A
BrandVishay
TWD57.70
Each (In a Bag of 1000)
units
Infrared, Visible Light 5µs 6µs 1 800µA 100nA ±40 ° NPN 3 Through Hole TO-18 4.7 x 5.2mm 50mA 4.7mm
RS Stock No. 654-8255
Mfr. Part No.BP 103-3/4
TWD83.40
Each (In a Pack of 5)
units
Infrared, Visible Light 12µs 12µs 1 950µA 50nA 110 ° NPN 3 Through Hole TO-18 5.5 x 5.5 x 3.6mm 100mA -
RS Stock No. 168-5376
Mfr. Part No.SFH 309-5
TWD7.00
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. 168-5169
Mfr. Part No.SFH 3410-3/4-Z
TWD16.40
Each (On a Reel of 2000)
units
Infrared, Ultraviolet, Visible Light - - 1 25µA 3nA 120 ° NPN 3 Surface Mount DIP 2.1 x 2.7 x 1.05mm 20mA -
RS Stock No. 170-9646
Mfr. Part No.SFH 3211 FA-3/4-Z
TWD7.30
Each (On a Reel of 2000)
units
Infrared 7µs 7µs 1 1000µA 200nA 120 ° NPN 2 Surface Mount SMD 3.4 x 3 x 2mm 15mA -
RS Stock No. 168-5381
Mfr. Part No.SFH 320 FA-4-Z
TWD6.40
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. 136-9671
Mfr. Part No.BPX 81-3/4
TWD19.70
Each (In a Bag of 1000)
units
- 6µs 6µs 1 >400µA 1 (≤ 50)nA ±18 ° NPN 2 Through Hole Miniature Array 2.2 x 2 x 3.45mm 50mA -
RS Stock No. 665-5274
Mfr. Part No.BPX 85
TWD343.00
Each
units
- - - - - - - - 6 Through Hole DIP 7.4 x 2.1 x 3.6mm - -