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 Spectral Range of Sensitivity Diode Material Minimum Wavelength Detected Maximum Wavelength Detected Typical Fall Time Length Width Height Dimensions
RS Stock No. 168-5245
Mfr. Part No.BPW 21
SGD11.83
Each (In a Box of 40)
units
Infrared, Ultraviolet, Visible Light 550nm TO-39 Through Hole 2 - Si 350nm 820nm - 9.5mm 9.5mm 3.7mm -
RS Stock No. 497-5661
Mfr. Part No.BPW 21
SGD14.62
Each
units
Infrared, Ultraviolet, Visible Light 550nm TO-39 Through Hole 2 - Si 350nm 820nm - 9.5mm 9.5mm 3.7mm -
RS Stock No. 848-6266
Mfr. Part No.FCI-InGaAs-120L-FC
SGD97.18
Each
units
- 1550nm - Through Hole 3 - InGaAs 900nm 1700nm - - - 19.2mm -
RS Stock No. 177-5565
Mfr. Part No.FCI-INGAAS-120L-FC
SGD248.96
Each (In a Tray of 2)
units
- 1550nm - Through Hole 3 - InGaAs 900nm 1700nm - - - 19.2mm -
RS Stock No. 165-3017
Mfr. Part No.VBP104S
BrandVishay
SGD0.414
Each (On a Reel of 1000)
units
Infrared, Visible Light 940nm GW Surface Mount 2 - Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 768-9394
Mfr. Part No.VBP104S
BrandVishay
SGD0.812
Each (In a Bag of 5)
units
Infrared, Visible Light 940nm GW Surface Mount 2 - Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 177-6006
Mfr. Part No.SFH 203 P
SGD0.467
Each (On a Tape of 1000)
units
Infrared, Visible Light 850nm - Through Hole 2 - Si 400nm 1100nm - 5.9mm 5mm 5mm -
RS Stock No. 195-697
Mfr. Part No.SFH 203 FA
SGD0.92
Each
units
Infrared 900nm T-1 3/4 Through Hole 2 - Si 800nm 1100nm - 5.9mm 5.9mm 9mm -
RS Stock No. 654-8671
Mfr. Part No.SFH 203 P
SGD1.308
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm T-1 3/4 Through Hole 2 - Si 400nm 1100nm - 5.9mm 5mm 5mm -
RS Stock No. 627-8366
Mfr. Part No.VTB8440BH
SGD5.82
Each
units
Visible Light 580nm Ceramic Through Hole 2 - Si 330nm 720nm - - - 7.87mm -
RS Stock No. 913-3285
Mfr. Part No.SFH 2701
SGD0.381
Each (On a Reel of 3000)
units
Infrared, Visible Light 820nm Chip LED Surface Mount 2 - - 400nm 1050nm - 3.35mm 1.65mm 1.25mm -
RS Stock No. 165-2632
Mfr. Part No.BPV22F
BrandVishay
SGD0.551
Each (In a Bag of 1000)
units
Infrared 950nm - Through Hole 2 - Si 870nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 699-7600
Mfr. Part No.BPV22F
BrandVishay
SGD1.548
Each (In a Pack of 5)
units
Infrared 950nm - Through Hole 2 - Si 870nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 304-346
Mfr. Part No.BPX65
BrandCentronic
SGD15.21
Each
units
Infrared, Ultraviolet, Visible Light 850nm TO-18 Through Hole 2 - Si 350nm 1100nm - 5.6mm 5.6mm 5.5mm -
RS Stock No. 848-6285
Mfr. Part No.FCI-InGaAs-500
SGD61.17
Each
units
- 1550nm TO-46 Through Hole 3 - InGaAs 900nm 1700nm - - - 3.75mm -
RS Stock No. 177-5578
Mfr. Part No.FCI-INGAAS-500
SGD141.078
Each (In a Tray of 10)
units
- 1550nm TO-46 Through Hole 3 - InGaAs 900nm 1700nm - - - 3.75mm -
RS Stock No. 710-3838
Mfr. Part No.TEMD5510FX01
BrandVishay
SGD2.924
Each (In a Pack of 5)
units
Visible Light 540nm SMD Surface Mount 2 - Si 430nm 610nm - 5mm 4.25mm 1.08mm -
RS Stock No. 168-5300
Mfr. Part No.KOM 2125-Z
SGD6.939
Each (On a Reel of 1400)
units
Infrared, Visible Light 850nm DIP Surface Mount 3 - Si 400nm 1100nm - 8.5mm 4.5mm 1.2mm -
RS Stock No. 919-0739
Mfr. Part No.TEMD5510FX01
BrandVishay
SGD1.308
Each (On a Reel of 1500)
units
Visible Light 540nm SMD Surface Mount 2 - Si 430nm 610nm - 5mm 4.25mm 1.08mm -
RS Stock No. 654-8233
Mfr. Part No.KOM 2125-Z
SGD7.65
Each
units
Infrared, Visible Light 850nm DIP Surface Mount 3 - Si 400nm 1100nm - 8.5mm 4.5mm 1.2mm -
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