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. 170-0768
Mfr. Part No.OP593B
BrandOptek
$0.977
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. 700-0776
Mfr. Part No.TEPT4400
BrandVishay
$0.743
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. 168-5310
Mfr. Part No.SFH 310-2/3
$0.277
Each (On a Tape of 2000)
units
Infrared, Visible Light 12µs 12µs 1 4800µA 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS Stock No. 170-0772
Mfr. Part No.OP644SL
BrandOptek
$3.38
Each (In a Bag of 400)
units
- 15µs 15µs 1 22000µA 100nA - NPN 2 - Pill 2.34 x 1.57 x 2.92mm 50mA -
RS Stock No. 477-6335
Mfr. Part No.PT100MF0MP1
BrandSharp
$1.13
Each (In a Pack of 5)
units
Infrared 6µs 5µs 1 - 100nA 30 ° NPN 2 Surface Mount - 3 x 1.5 x 2.2mm 20mA -
RS Stock No. 145-1923
Mfr. Part No.TEPT4400
BrandVishay
$0.436
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. 168-5291
Mfr. Part No.SFH 300-3/4
$0.404
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. 654-8031
Mfr. Part No.SFH 300-3/4
$0.886
Each (In a Pack of 10)
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. 168-5376
Mfr. Part No.SFH 309-5
$0.772
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. 665-5350
Mfr. Part No.SFH 309 FA
$0.634
Each (In a Pack of 20)
units
Infrared 7µs 7µs 1 - 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 815-1263
Mfr. Part No.BPW85
BrandVishay
$1.22
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
RS Stock No. 913-3685
Mfr. Part No.SFH 3711
$0.356
Each (On a Reel of 3000)
units
Infrared - - - 80µA 3nA ±60 ° NPN 2 Surface Mount Chip LED 2.1 x 0.95 x 1.35mm 20mA -
RS Stock No. 165-6188
Mfr. Part No.BPW77NA
BrandVishay
$5.46
Each (In a Bag of 1000)
units
Infrared, Visible Light 5µs 6µs 1 15000µA 100nA ±10 ° NPN 3 Through Hole TO-18 4.69 x 6.15mm 50mA 4.69mm
RS Stock No. 912-8545
Mfr. Part No.SFH 313 FA-2/3
$0.378
Each (In a Bag of 1000)
units
Infrared 14µs 14µs 1 12500µA 200nA 20 ° NPN 2 Through Hole T-1 3/4 5.9 x 5.9 x 9mm 50mA -
RS Stock No. 455-0795
Mfr. Part No.OP644SL
BrandOptek
$3.666
Each (In a Pack of 5)
units
- 15µs 15µs 1 22000µA 100nA - NPN 2 - Pill 2.34 x 1.57 x 2.92mm 50mA -
RS Stock No. 778-1377
Mfr. Part No.SFH 3711
$0.893
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. 654-8542
Mfr. Part No.SFH 310-2/3
$0.382
Each (In a Pack of 10)
units
Infrared, Visible Light 12µs 12µs 1 4800µA 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS Stock No. 815-1250
Mfr. Part No.BPW77NA
BrandVishay
$5.27
Each (In a Pack of 5)
units
Infrared, Visible Light 5µs 6µs 1 15000µA 100nA ±10 ° NPN 3 Through Hole TO-18 4.69 x 6.15mm 50mA 4.69mm
RS Stock No. 665-5372
Mfr. Part No.SFH 309-5
$1.99
Each (In a Pack of 10)
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. 195-849
Mfr. Part No.SDP8436-003
BrandHoneywell
$2.93
Each
units
- 15µs 15µs 1 17500µA 100nA 18 ° NPN 2 Through Hole Side Looker 4.57 x 4.29 x 3.3mm - -
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