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

...
Read more Read less

Filters

Viewing 21 - 40 of 277 products
Results per page
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. 654-7993
Mfr. Part No.LPT 80A
$0.761
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. 170-0779
Mfr. Part No.OPL550
BrandOptek
$2.19
Each (In a Bag of 50)
units
Infrared 25ns 25ns 1 - - - - 3 Through Hole Side Looker 4.45 x 2.34 x 5.72mm - -
RS Stock No. 665-5356
Mfr. Part No.SFH 309
$0.471
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. 665-5287
Mfr. Part No.BPY 62
$2.526
Each (In a Pack of 5)
units
Infrared, Visible Light 12µs 12µs 1 500µA 50nA 16 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 100mA -
RS Stock No. 168-5369
Mfr. Part No.BPY 62
$1.694
Each (In a Bag of 1000)
units
Infrared, Visible Light 12µs 12µs 1 500µA 50nA 16 ° NPN 3 Through Hole TO-18 5.6 x 5.6 x 6.2mm 100mA -
RS Stock No. 146-1624
Mfr. Part No.SFH 309
$0.217
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. 170-2455
Mfr. Part No.PT4800E0000F
BrandSharp
$0.592
Each (In a Bag of 1000)
units
- 3.5µs 3µs 1 1000µA 100000nA 70 ° NPN 2 Through Hole Side Looker 3 x 1.5 x 3.5mm 20mA -
RS Stock No. 700-0751
Mfr. Part No.BPW17N
BrandVishay
$0.843
Each (In a Pack of 10)
units
Infrared, Visible Light 5µs 4.8µs 1 1000µA 200nA 24 ° NPN 2 Through Hole T-3/4 3.3 x 2.4 x 2.9mm 50mA -
RS Stock No. 876-8710
Mfr. Part No.SFH 309 FA-4
$0.542
Each (In a Pack of 25)
units
Infrared 7µs 7µs 1 4500µA 1 (≤ 50)nA ±12 ° NPN 2 Through Hole 3mm (T-1) 3.1 (Dia.) x 5.2mm 15mA 3.1mm
RS Stock No. 145-2208
Mfr. Part No.BPW17N
BrandVishay
$0.408
Each (In a Bag of 1000)
units
Infrared, Visible Light 5µs 4.8µs 1 1000µA 200nA 24 ° NPN 2 Through Hole - 3.3 x 2.4 x 2.9mm 50mA -
RS Stock No. 165-2383
Mfr. Part No.TEPT5600
BrandVishay
$0.476
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. 667-5215
Mfr. Part No.PT4800E0000F
BrandSharp
$0.653
Each (In a Pack of 10)
units
- 3.5µs 3µs 1 1000µA 100000nA 70 ° NPN 2 Through Hole Side Looker 3 x 1.5 x 3.5mm 20mA -
RS Stock No. 768-9417
Mfr. Part No.VEMT2520X01
BrandVishay
$0.803
Each (In a Bag of 10)
units
Infrared, Visible Light - - 1 9000µA 100nA ±15 ° - 2 Surface Mount Subminiature 2.3 x 2.3 x 2.77mm 50mA -
RS Stock No. 168-5553
Mfr. Part No.SFH 309 FA-4
$0.255
Each (In a Bag of 2000)
units
Infrared 7µs 7µs 1 4500µA 1 (≤ 50)nA ±12 ° NPN 2 Through Hole 3mm (T-1) 3.1 (Dia.) x 5.2mm 15mA 3.1mm
RS Stock No. 165-2773
Mfr. Part No.VEMT2520X01
BrandVishay
$0.332
Each (On a Reel of 6000)
units
Infrared, Visible Light - - 1 9000µA 100nA ±15 ° - 2 Surface Mount Subminiature 2.3 x 2.3 x 2.77mm 50mA -
RS Stock No. 665-5388
Mfr. Part No.SFH 310 FA
$0.539
Each (In a Pack of 20)
units
Infrared 12µs 12µs 1 - 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS Stock No. 168-5377
Mfr. Part No.SFH 309-4
$0.304
Each (In a Bag of 2000)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 4500µA 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 146-1626
Mfr. Part No.SFH 310 FA
$0.228
Each (In a Bag of 2000)
units
Infrared 12µs 12µs 1 - 50nA 50 ° NPN 2 Through Hole 3mm (T-1) 3.4 x 3.4 x 4.8mm 50mA -
RS Stock No. 665-5378
Mfr. Part No.SFH 309-4
$0.456
Each (In a Pack of 10)
units
Infrared, Ultraviolet, Visible Light 7µs 7µs 1 4500µA 200nA 24 ° NPN 2 Through Hole 3mm (T-1) 4 x 4 x 5.2mm 15mA -
RS Stock No. 700-0779
Mfr. Part No.TEPT5600
BrandVishay
$0.759
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 -
Related Products
The Silicon Labs broad range of Digital Isolation ...
Description:
The Silicon Labs broad range of Digital Isolation products offers significant improvements over older isolation technologies such as opto-couplers. They demonstrate lower power consumption, greater reliability and higher performance, and are generally smaller in size and lower in cost. These ...
The QSB363 series, from Fairchild Semiconductor, are a ...
Description:
The QSB363 series, from Fairchild Semiconductor, are a family of silicon IR phototransistors. They are in surface mount (SMD) subminiature packages with a T-3/4 (2mm) domed lens. The QSB363 IR phototransistors have a range of different lead types including gull-wing, ...
ROHM's optical sensors serve as eyes to monitor ...
Description:
ROHM's optical sensors serve as eyes to monitor changes of any motions, and comply with customer's day-to-day diversifying requests. Sideview mold resin packageVisible light filter.
The SFH 3100 F, from OSRAM Opto Semiconductor, ...
Description:
The SFH 3100 F, from OSRAM Opto Semiconductor, is a silicon NPN phototransistor in thier Sidelooker package. It comes in a side looking (SL) through-hole package. It has a black lens for daylight filter. The SFH 3100 F is designed ...