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. 654-7729
Mfr. Part No.BPW 34 BS-Z
$9.35
Each
units
Infrared, Ultraviolet, Visible Light 850nm DIP Surface Mount 2 Si 350nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 183-7171
Mfr. Part No.OSD1-E
$38.31
Each
units
Infrared 550nm TO-18 Through Hole 2 Si - - - - - 0.2in - -
RS Stock No. 176-9786
Mfr. Part No.UV-100L
$234.61
Each
units
- 254nm Low Profile Through Hole 3 Si UV-100L 254nm - - - 4.826mm - -
RS Stock No. 710-3844
Mfr. Part No.TEMD7100X01
BrandVishay
$1.276
Each (In a Pack of 10)
units
Infrared 950nm 0805 Surface Mount 2 Si 750nm 1050nm - 2mm 1.25mm 0.85mm 60 ° -
RS Stock No. 805-0508
Mfr. Part No.QSB34CGR
$0.714
Each (In a Pack of 10)
units
Infrared 940nm PLCC 2L Surface Mount 2 Si 400nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 124-7166
Mfr. Part No.S3932
$128.03
Each
units
Infrared 920nm - Through Hole 4 - 320nm 1100nm - 15.2mm 0.7mm 1.5mm - -
RS Stock No. 654-8570
Mfr. Part No.BP 104 FS-Z
$0.958
Each (In a Pack of 5)
units
Infrared 950nm DIP Surface Mount 2 Si 800nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 846-755
Mfr. Part No.BPX65R(T)
BrandCentronic
$25.86
Each
units
Infrared 850nm TO-18 Through Hole 3 Si - - - 4.7mm 4.7mm 5.17mm 80 ° -
RS Stock No. 183-7116
Mfr. Part No.FCI-InGaAs-300
$47.50
Each (In a Tray of 10)
units
Infrared 1700nm TO-46 Through Hole 3 InGaAs 900nm 1700nm 1.5ns - - 2.68mm - -
RS Stock No. 846-705
Mfr. Part No.OSD15-E
BrandCentronic
$55.29
Each
units
Visible Light 630nm TO-5 Through Hole 3 Si 350nm 800nm - - - 12.7mm - -
New
RS Stock No. 201-9550
Mfr. Part No.SFH 2703
$2,206.61
1 Reel of 3000
Reel(s)
- 940nm - Surface Mount 2 Si - - - - - - 65 ° -
RS Stock No. 681-1247
Mfr. Part No.SFH 205 F
$2.27
Each (In a Pack of 5)
units
Infrared 950nm T-1 3/4 Through Hole 2 Si 800nm 1100nm - 5.1mm 4.1mm 6.9mm 60 ° -
RS Stock No. 168-5192
Mfr. Part No.SFH 2200
$0.715
Each (On a Reel of 1500)
units
- - - - - - - - - - - - - -
RS Stock No. 183-7167
Mfr. Part No.OSD15-0
$38.31
Each
units
Infrared 900nm TO-5 Through Hole 2 Si 350nm 1100nm - - - 0.13in - -
RS Stock No. 183-7133
Mfr. Part No.PIN-5DP
$30.811
Each (In a Tray of 10)
units
Infrared 970nm TO-5 Through Hole 2 Si 350nm 1100nm - - - 0.18in - -
RS Stock No. 415-5722
Mfr. Part No.S1223-01
$31.42
Each
units
Infrared, Ultraviolet, Visible Light 960nm TO-5 Through Hole 2 Si 320nm 1100nm - 9.1mm 9.1mm 4.1mm - -
RS Stock No. 168-7920
Mfr. Part No.IS471FE
BrandSharp
$3.443
Each (In a Bag of 500)
units
Infrared 800 → 900nm - - 4 - 700nm 1150nm - - - - - -
RS Stock No. 183-7173
Mfr. Part No.OSD60-5T
$171.00
Each
units
Infrared 436nm TO-8 Through Hole 3 Si 350nm 1100nm - - - 0.17in - -
RS Stock No. 177-5577
Mfr. Part No.PIN-5DI
$55.954
Each (In a Tray of 10)
units
Infrared, Visible Light 970nm TO-5 Through Hole 3 Si 350nm 1100nm - - - 4.57mm - -
RS Stock No. 161-2060
Mfr. Part No.VEMD6060X01
BrandVishay
$0.896
Each (On a Reel of 3000)
units
Infrared 820nm 1206 Surface Mount 3 Si 380nm - 50ns 4mm 2mm 1.05mm ±70 ° AEC-Q101
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