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. 806-1763
Mfr. Part No.KDT00030TR
MYR1.97
Each (In a Pack of 20)
units
- - - 1 1100µA 100nA - NPN 2 Surface Mount - 1.7 x 0.8 x 0.6mm - -
RS Stock No. 166-1740
Mfr. Part No.KDT00030TR
MYR0.855
Each (On a Reel of 3000)
units
- - - 1 1100µA 100nA - NPN 2 Surface Mount - 1.7 x 0.8 x 0.6mm - -
RS Stock No. 805-0549
Mfr. Part No.QTLP610CPDTR
MYR4.137
Each (In a Pack of 10)
units
Infrared 15µs 15µs 1 - 100nA 80 ° - 2 Surface Mount - 3.2 x 2.2 x 1.1mm 0.5mA -
RS Stock No. 166-3207
Mfr. Part No.QTLP610CPDTR
MYR1.938
Each (On a Reel of 2000)
units
Infrared 15µs 15µs 1 - 100nA 80 ° - 2 Surface Mount - 3.2 x 2.2 x 1.1mm 0.5mA -
RS Stock No. 805-0523
Mfr. Part No.QSB363ZR
MYR1.929
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. 184-1441
Mfr. Part No.QSD124
MYR1.89
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. 146-2097
Mfr. Part No.QSE113
MYR1.386
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. 184-1082
Mfr. Part No.QRD1114
MYR3.998
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 1 (Minimum)mA -
RS Stock No. 184-1081
Mfr. Part No.QRD1113
MYR4.463
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. 184-1084
Mfr. Part No.QSD124
MYR1.224
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 39mA 6.1mm
RS Stock No. 184-1562
Mfr. Part No.QRD1113
MYR6.37
Each (In a Pack of 10)
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. 184-1403
Mfr. Part No.QRD1114
MYR7.198
Each (In a Pack of 10)
units
Infrared 50µs 10µs 1 - 100nA - - 4 Through Hole Custom 4L 4.39 x 6.1 x 4.65mm 1 (Minimum)mA -
RS Stock No. 184-1083
Mfr. Part No.QSD123
MYR1.113
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. 805-0517
Mfr. Part No.QSB363
MYR2.142
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. 802-3317
Mfr. Part No.QSE113
MYR2.415
Each (In a Pack of 20)
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. 166-1947
Mfr. Part No.QSE114
MYR1.058
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. 146-2107
Mfr. Part No.QSB363
MYR0.963
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. 169-8673
Mfr. Part No.QSB363ZR
MYR0.727
Each (On a Reel 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. 184-1423
Mfr. Part No.QSD123
MYR1.73
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 16mA 6.1mm