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. 708-2810
Mfr. Part No.BPW77NB
BrandVishay
TWD121
Each (In a Bag of 5)
units
Infrared, Visible Light 5µs 6µs 1 20000µA 100nA 20 ° NPN 3 Through Hole TO-18 5.5 x 5.5 x 6.15mm 50mA -
RS Stock No. 145-1931
Mfr. Part No.BPW77NB
BrandVishay
TWD58
Each (In a Bag of 1000)
units
Infrared, Visible Light 5µs 6µs 1 20000µA 100nA 20 ° NPN 3 Through Hole TO-18 5.5 x 5.5 x 6.15mm 50mA -
RS Stock No. 908-7037
Mfr. Part No.OP805SL
BrandOptek
TWD88
Each (In a Pack of 10)
units
Infrared 7µs 7µs 1 - 100nA - NPN 3 Through Hole TO-18 5.84 (Dia.) x 6.86 Hmm 50mA 5.84mm
RS Stock No. 700-0776
Mfr. Part No.TEPT4400
BrandVishay
TWD11
Each (In a Pack of 10)
units
Visible Light - - 1 200µA 50nA 60 ° - 2 Through Hole 3mm (T-1) 3.2 x 3.2 x 4.5mm 20mA -
RS Stock No. 665-5356
Mfr. Part No.SFH 309
TWD8
Each (In a Pack of 20)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 - 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 170-0768
Mfr. Part No.OP593B
BrandOptek
TWD33
Each (In a Bag of 500)
units
Infrared - - 1 4000µA 100nA - NPN 2 Through Hole TO-18 5.72 x 5.72 x 7.62mm 50mA -
RS Stock No. 146-1624
Mfr. Part No.SFH 309
TWD5
Each (In a Bag of 2000)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 - 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 234-0978
Mfr. Part No.OP593B
BrandOptek
TWD29
Each
units
Infrared - - 1 4000µA 100nA - NPN 2 Through Hole TO-18 5.72 x 5.72 x 7.62mm 50mA -
RS Stock No. 145-1923
Mfr. Part No.TEPT4400
BrandVishay
TWD6
Each (In a Bag of 1000)
units
Visible Light - - 1 200µA 50nA 60 ° - 2 Through Hole 3mm (T-1) 3.2 x 3.2 x 4.5mm 20mA -
RS Stock No. 169-7603
Mfr. Part No.SD1440-003L
BrandHoneywell
TWD147
Each (In a Bag of 100)
units
- 15000ns 15µs 1 3000µA 100nA 24 ° NPN 2 Through Hole Metal Can 2.41 x 2.41 x 3.1mm - -
RS Stock No. 815-1250
Mfr. Part No.BPW77NA
BrandVishay
TWD88
Each (In a Pack of 5)
units
Infrared, Visible Light 5µs 6µs 1 15mA 100nA ±10 ° NPN 3 Through Hole TO-18 4.69 x 6.15mm 50mA 4.69mm
RS Stock No. 165-6188
Mfr. Part No.BPW77NA
BrandVishay
TWD68
Each (In a Bag of 1000)
units
Infrared, Visible Light 5µs 6µs 1 15mA 100nA ±10 ° NPN 3 Through Hole TO-18 4.69 x 6.15mm 50mA 4.69mm
RS Stock No. 171-4845
Mfr. Part No.SD1440-003L
BrandHoneywell
TWD154
Each
units
- 15000ns 15µs 1 3000µA 100nA 24 ° NPN 2 Through Hole Metal Can 2.41 x 2.41 x 3.1mm - -
RS Stock No. 165-2383
Mfr. Part No.TEPT5600
BrandVishay
TWD11
Each (In a Bag of 4000)
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. 700-0779
Mfr. Part No.TEPT5600
BrandVishay
TWD19
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. 665-5259
Mfr. Part No.BPX 81-3
TWD32
Each (In a Pack of 5)
units
Infrared, Visible Light 6µs 6µs 1 1900µA 50nA 36 ° NPN 2 Through Hole DIP 2.4 x 2.4 x 3.6mm 50mA -
RS Stock No. 708-2686
Mfr. Part No.BPW85C
BrandVishay
TWD17
Each (In a Bag of 10)
units
Infrared, Visible Light 2.3µs 2µs 1 8000µA 200nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.5mm 50mA -
RS Stock No. 165-2333
Mfr. Part No.TEMT7100X01
BrandVishay
TWD9
Each (On a Reel of 3000)
units
Infrared - - 1 675µA 100nA 120 ° NPN 2 Surface Mount - 2 x 1.25 x 0.85mm 20mA -
RS Stock No. 708-2822
Mfr. Part No.BPW96C
BrandVishay
TWD23
Each (In a Bag of 10)
units
Infrared, Visible Light 2.3µs 2µs 1 15000µA 200nA 40 ° NPN 2 Through Hole 5mm (T-1 3/4) 5.75 x 5.75 x 8.6mm 50mA -
RS Stock No. 170-0779
Mfr. Part No.OPL550
BrandOptek
TWD83
Each (In a Bag of 50)
units
Infrared 25ns 25ns 1 - - - - 3 Through Hole Side Looker 4.45 x 2.34 x 5.72mm - -