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
268
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.
805-0549
Mfr. Part No.QTLP610CPDTR
BrandON Semiconductor
|
HK$7.406
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.
665-5384
Mfr. Part No.SFH 310
|
HK$3.76
Each (In a Pack of 20)
units
|
Infrared, Visible Light | 12µs | 12µs | 1 | - | 50nA | 50 ° | NPN | 2 | Through Hole | 3mm (T-1) | 3.4 x 3.4 x 4.8mm | 50mA | - |
|
RS Stock No.
912-8545
Mfr. Part No.SFH 313 FA-2/3
|
HK$2.11
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.
665-5369
Mfr. Part No.SFH 309 FA-3/4
|
HK$3.71
Each (In a Pack of 10)
units
|
Infrared | 7µs | 7µs | 1 | 4500µA | 200nA | 24 ° | NPN | 2 | Through Hole | 3mm (T-1) | 4 x 4 x 5.2mm | 15mA | - |
|
RS Stock No.
805-0523
Mfr. Part No.QSB363ZR
BrandON Semiconductor
|
HK$4.161
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.
182-8113
Mfr. Part No.RPT-37PB3F
BrandROHM
|
HK$5.161
Each (In a Pack of 20)
units
|
Infrared | 10µs | 10µs | 1 | 2 (Minimum)mA | 0.5µA | ±36 ° | - | 2 | Through Hole | - | 3.8 Dia. x 5.2mm | 30mA | 3.8mm |
|
RS Stock No.
168-7390
Mfr. Part No.PS1195WB
BrandStanley Electric
|
HK$1.817
Each (On a Reel of 4000)
units
|
Infrared | 9µs | 8µs | 1 | 7000µA | 0.1µA | 45 ° | NPN | 2 | Surface Mount | - | 3.2 x 1.6 x 1.85mm | 20mA | - |
|
SFH 3201-2/3-Z Osram Opto, 120 ° IR + Visible Light Phototransistor, Surface Mount 6-Pin SMD package
RS Stock No.
170-9643
Mfr. Part No.SFH 3201-2/3-Z
|
HK$4.076
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.
146-1607
Mfr. Part No.SFH 3710-2/3-Z
|
HK$2.812
Each (On a Reel of 3000)
units
|
Infrared, Ultraviolet, Visible Light | - | - | 1 | 350µA | 3nA | 120 ° | NPN | 2 | Surface Mount | - | 2.1 x 1.35 x 0.9mm | 20mA | - |
|
RS Stock No.
665-5426
Mfr. Part No.SFH 3211 FA
|
HK$1.881
Each (In a Pack of 20)
units
|
Infrared | 7µs | 7µs | 1 | 16µA | 200nA | 120 ° | NPN | 2 | Surface Mount | - | 3.4 x 3 x 2mm | 15mA | - |
|
RS Stock No.
168-5381
Mfr. Part No.SFH 320 FA-4-Z
|
HK$1.524
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.
700-0782
Mfr. Part No.VEMT2020X01
BrandVishay
|
HK$5.33
Each (In a Pack of 20)
units
|
Infrared | - | - | 1 | 9000µA | 100nA | 30 ° | NPN | 2 | Surface Mount | - | 2.3 x 2.3 x 2.77mm | 50mA | - |
|
RS Stock No.
665-5350
Mfr. Part No.SFH 309 FA
|
HK$4.131
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.
710-3939
Mfr. Part No.VEMT3700F-GS08
BrandVishay
|
HK$6.685
Each (In a Pack of 10)
units
|
Infrared | 6µs | 6µs | 1 | 5000µA | 200nA | 120 ° | NPN | 2 | Surface Mount | PLCC | - | 50mA | - |
|
RS Stock No.
168-5366
Mfr. Part No.BPX 85
|
HK$50.944
Each (In a Bag of 125)
units
|
- | - | - | - | - | - | - | - | 6 | Through Hole | DIP | 7.4 x 2.1 x 3.6mm | - | - |
|
RS Stock No.
168-5551
Mfr. Part No.BPX 43-4
|
HK$20.003
Each (In a Bag of 1000)
units
|
Infrared | 15µs | 15µs | 1 | 9500µA | 20 (≤ 100)nA | ±15 ° | NPN | 3 | Through Hole | TO-18 | 4.8 (Dia.) x 6.2mm | 50mA | 4.8mm |
|
RS Stock No.
913-3301
Mfr. Part No.SFH 3600-3/4-Z
|
HK$2.644
Each (On a Reel of 2000)
units
|
Infrared, Visible Light | 45µs | 45µs | 1 | 500µA | 50nA | 40 ° | - | 2 | Surface Mount | - | 3.3 x 2.35 x 1.7mm | 15mA | - |
|
RS Stock No.
168-5554
Mfr. Part No.SFH 320
|
HK$1.418
Each (On a Reel of 2000)
units
|
Infrared | - | - | - | - | - | - | - | 2 | Surface Mount | PLCC | 3 x 3.4 x 2.1mm | - | - |
|
RS Stock No.
169-7604
Mfr. Part No.SDP 8406-002
BrandHoneywell
|
HK$5.507
Each (In a Bag of 100)
units
|
- | 15µs | 15µs | 1 | 3600µA | 100nA | 50 ° | NPN | 2 | Through Hole | Side Looker | 4.45 x 2.28 x 5.72mm | 36mA | - |
|
RS Stock No.
178-0647
Mfr. Part No.RPM-20PB
BrandROHM
|
HK$3.231
Each (In a Pack of 20)
units
|
Visible Light | 10µs | 10µs | - | 0.5 (Minimum)mA | 0.5µA | ±14 ° | PNP | 2 | Through Hole | DIP | 4.3 x 3.2 x 4.4mm | 30mA | - |
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