Photodiodes

Photodiodes are used in an array of every day electronic devices such as camera's, smoke detectors, burglar alarms, safety equipment, medical applications, CD players and surveying instruments to name a few.

What is a photodiode?

They are used as light sensors or detectors. When light reaches a photodiode, this is converted to electrical energy in the form of an electric current. The photocurrent that is produced is proportional to the amount of light. Photodiodes can also be known as photosensors, photodetectors and light detectors.

Photonic applications use the photon in the same way as electronic applications use the electron. There is usually a small amount of electric current that flows through these photosensitive devices even when no light (photons) are entering it. This is known as dark current.

What are the different types?

The PN photodiode was the first to be developed, it is not so widely used these days due to their relatively low performance compared to newer technologies.

The PIN photodiode has a wider surface area and allows for more light photons to be collected, as well as having a lower capacitance. It is the most widely used diode today.

Avalanche photodiodes are used in areas where there is low light, it operates under a high reverse bias condition. The higher the reverse voltage, the higher the gain.

Schottky photodiode is based on the schottky diode, or shottky barrier diode. It provides additional functions over others, particularly with regards to high speed and long wavelength detection.

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Description Price Spectrums Detected Wavelength of Peak Sensitivity Package Type Mounting Type Number of Pins Diode Material Minimum Wavelength Detected Maximum Wavelength Detected Typical Fall Time Length Width Height Angle of Half Sensitivity Automotive Standard
RS Stock No. 168-5319
Mfr. Part No.SFH 235 FA
$0.679
Each (In a Bag of 1000)
units
Infrared 900nm - Through Hole 2 Si 740nm 1120nm - 5.1mm 3.1mm 7.2mm 65 ° -
RS Stock No. 826-4625
Mfr. Part No.IS471FE
BrandSharp
$6.34
Each (In a Pack of 5)
units
Infrared 800 → 900nm - - 4 - 700nm 1150nm - - - - - -
RS Stock No. 654-9034
Mfr. Part No.SFH 235 FA
$1.94
Each (In a Pack of 5)
units
Infrared 900nm T-1 3/4 Through Hole 2 Si 740nm 1120nm - 5.1mm 3.1mm 7.2mm 65 ° -
RS Stock No. 168-5424
Mfr. Part No.SFH 2270R
$0.914
Each (On a Reel of 2000)
units
Visible Light 560nm Top LED Surface Mount 2 - 480nm 650nm - - - - - -
RS Stock No. 912-8564
Mfr. Part No.SFH 213 FA
$0.55
Each (In a Bag of 1000)
units
Infrared 900nm - Through Hole 2 Si 750nm 1100nm - 5.9mm 5mm 9mm 10 ° -
RS Stock No. 654-7892
Mfr. Part No.BPW 34 FAS-Z
$1.54
Each (In a Pack of 5)
units
Infrared 880nm DIP Surface Mount 2 Si 730nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 708-0561
Mfr. Part No.SFH 2270R
$2.31
Each (In a Pack of 5)
units
Visible Light 560nm Top LED Surface Mount 2 - 480nm 650nm - - - - - -
RS Stock No. 699-7597
Mfr. Part No.BP104
BrandVishay
$1.83
Each (In a Pack of 5)
units
Infrared 950nm - Through Hole 2 Si 870nm 1050nm - 4.65mm 4.3mm 2mm 65 ° -
RS Stock No. 124-3361
Mfr. Part No.SFH 2440 L
$2.11
Each (In a Pack of 10)
units
Infrared 620nm DIL Surface Mount 2 Si 400nm 690nm 0.09µs 4.4mm 3.9mm 1.15mm ±60 ° -
RS Stock No. 710-3822
Mfr. Part No.TEMD5020X01
BrandVishay
$2.58
Each (In a Pack of 5)
units
Infrared, Visible Light 900nm - Surface Mount 2 Si 430nm 1100nm - 5mm 4.24mm 1.12mm 65 ° -
RS Stock No. 848-6288
Mfr. Part No.PIN-10D
$166.05
Each
units
Infrared 970nm BNC Surface Mount 1 Si 350nm 1100nm - 24.77mm - 26.16mm - -
RS Stock No. 177-5562
Mfr. Part No.PIN-10D
$262.175
Each (In a Box of 2)
units
Infrared 970nm BNC Surface Mount 1 Si 350nm 1100nm - 24.77mm - 26.16mm - -
RS Stock No. 124-7164
Mfr. Part No.S3274-05
$12.76
Each
units
Infrared 960nm DIP Through Hole 4 - 760nm 1100nm - 4.1mm 5mm 1.8mm - -
RS Stock No. 146-1423
Mfr. Part No.BPW24R
BrandVishay
$3.882
Each (In a Bag of 1000)
units
Infrared, Visible Light 900nm TO-18 Through Hole 2 Si 600nm 1050nm - 5.5mm 5.5mm 6.15mm 12 ° -
RS Stock No. 177-7613
Mfr. Part No.BP104
BrandVishay
$0.575
Each (In a Box of 3000)
units
Infrared 950nm - Through Hole 2 Si 870nm 1050nm - 4.65mm 4.3mm 2mm 65 ° -
RS Stock No. 304-346
Mfr. Part No.BPX65
BrandCentronic
$15.46
Each
units
Infrared, Ultraviolet, Visible Light 850nm TO-18 Through Hole 2 Si 350nm 1100nm - 5.6mm 5.6mm 5.5mm 40 ° -
RS Stock No. 912-8510
Mfr. Part No.BPW 34 FAS-Z
$0.552
Each (On a Reel of 1500)
units
Infrared 880nm DIP Surface Mount 2 Si 730nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 124-7159
Mfr. Part No.S5972
$26.00
Each
units
Infrared, Visible Light 800nm TO-18 Through Hole 3 Si 320nm 1000nm - - - 3.6mm - -
RS Stock No. 708-2816
Mfr. Part No.BPW24R
BrandVishay
$6.88
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole 2 Si 600nm 1050nm - 5.5mm 5.5mm 6.15mm 12 ° -
RS Stock No. 165-2704
Mfr. Part No.TEMD5020X01
BrandVishay
$0.84
Each (On a Reel of 1500)
units
Infrared, Visible Light 900nm - Surface Mount 2 Si 430nm 1100nm - 5mm 4.24mm 1.12mm 65 ° -
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