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
Phototransistors
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Filters
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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RS Stock No.
145-1923
Mfr. Part No.TEPT4400
BrandVishay
|
HK$2.019
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.
700-0776
Mfr. Part No.TEPT4400
BrandVishay
|
HK$4.224
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.
654-8542
Mfr. Part No.SFH 310-2/3
|
HK$4.329
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.
168-5310
Mfr. Part No.SFH 310-2/3
|
HK$1.421
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.
654-7993
Mfr. Part No.LPT 80A
|
HK$6.209
Each (In a Pack of 10)
units
|
Infrared, Visible Light | 10µs | 10µs | 1 | 3200µA | 3nA | 70 ° | NPN | 2 | Through Hole | Side Looker | 4.57 x 2.54 x 5.84mm | 50mA | - |
|
RS Stock No.
170-9651
Mfr. Part No.SFH 3710-Z
|
HK$3.01
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.
168-5289
Mfr. Part No.LPT 80A
|
HK$2.184
Each (In a Box of 2000)
units
|
Infrared, Visible Light | 10µs | 10µs | 1 | 3200µA | 3nA | 70 ° | NPN | 2 | Through Hole | Side Looker | 4.57 x 2.54 x 5.84mm | 50mA | - |
|
|
RS Stock No.
915-4890
Mfr. Part No.SFH 3710-Z
|
HK$5.06
Each (In a Pack of 20)
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.
654-7808
Mfr. Part No.SFH 3310
|
HK$8.90
Each (In a Pack of 5)
units
|
Infrared, Ultraviolet, Visible Light | - | - | 1 | 8µA | 3nA | 150 ° | NPN | 2 | Through Hole | 3mm (T-1) | 4 x 4 x 3.1mm | 20mA | - |
|
RS Stock No.
912-8504
Mfr. Part No.SFH 3310
|
HK$3.008
Each (In a Bag of 2000)
units
|
Infrared, Ultraviolet, Visible Light | - | - | 1 | 8µA | 3nA | 150 ° | NPN | 2 | Through Hole | T-1 | 4 x 4 x 3.1mm | 20mA | - |
|
RS Stock No.
654-8031
Mfr. Part No.SFH 300-3/4
|
HK$3.821
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.
168-5291
Mfr. Part No.SFH 300-3/4
|
HK$1.957
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.
912-8514
Mfr. Part No.SFH 309 FA-4/5
|
HK$1.377
Each (In a Bag of 2000)
units
|
Infrared | 7µs | 7µs | 1 | 7200µA | 200nA | 24 ° | NPN | 2 | Through Hole | T-1 | 4 x 4 x 5.2mm | 15mA | - |
|
RS Stock No.
654-8019
Mfr. Part No.SFH 309 FA-4/5
|
HK$3.792
Each (In a Pack of 10)
units
|
Infrared | 7µs | 7µs | 1 | 7200µA | 200nA | 24 ° | NPN | 2 | Through Hole | 3mm (T-1) | 4 x 4 x 5.2mm | 15mA | - |
|
RS Stock No.
168-5376
Mfr. Part No.SFH 309-5
|
HK$1.71
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.
665-5372
Mfr. Part No.SFH 309-5
|
HK$3.729
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.
159-6488
Mfr. Part No.BPV11F
BrandVishay
|
HK$3.193
Each (In a Bag of 1000)
units
|
Infrared | 5µs | 6µs | 1 | 9000µA | 50nA | 30 ° | NPN | 2 | Through Hole | 5mm (T-1 3/4) | 5.75 x 5.75 x 8.6mm | 50mA | - |
|
RS Stock No.
654-8047
Mfr. Part No.SFH 300 FA-3/4
|
HK$3.821
Each (In a Pack of 10)
units
|
Infrared | 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.
919-0903
Mfr. Part No.TEMT1020
BrandVishay
|
HK$2.503
Each (On a Reel of 1000)
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.
665-5280
Mfr. Part No.BPX 88
|
HK$122.86
Each
units
|
- | - | - | - | - | - | - | - | 6 | Through Hole | DIP | 7.4 x 2.1 x 3.6mm | - | - |
