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. 170-9639
Mfr. Part No.BP 104 FASR-Z
TWD11.90
Each (On a Reel of 1500)
units
- 880nm - Surface Mount 2 Si - 880nm 0.02µs 4.5mm 4mm 1.2mm ±60 ° -
RS Stock No. 183-7133
Mfr. Part No.PIN-5DP
TWD560.80
Each (In a Tray of 10)
units
Infrared 970nm TO-5 Through Hole 2 Si 350nm 1100nm - - - 0.18in - -
RS Stock No. 168-5245
Mfr. Part No.BPW 21
TWD280.20
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 55 ° -
RS Stock No. 177-5561
Mfr. Part No.PIN-SPOT-9DMI
TWD5,803.50
Each (In a Box of 2)
units
- 970nm Low Profile Through Hole 3 Si 350nm 1100nm - - - 5mm - -
RS Stock No. 768-9391
Mfr. Part No.VBP104FASR
BrandVishay
TWD37.60
Each (In a Bag of 5)
units
Infrared 950nm Reverse Gullwing Surface Mount 2 Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm ±65 ° -
RS Stock No. 919-0761
Mfr. Part No.VEMD2000X01
BrandVishay
TWD9.90
Each (On a Reel of 6000)
units
Infrared 940nm Subminiature Surface Mount 2 Si 750nm 1050nm - 2.3mm 2.3mm 2.77mm 15 ° -
RS Stock No. 654-8902
Mfr. Part No.SFH 213
TWD35.20
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm T-1 3/4 Through Hole 2 Si 400nm 1100nm - 5.9mm 5mm 9mm 10 ° -
RS Stock No. 654-8261
Mfr. Part No.BPW 34 SR-Z
TWD23.00
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm DIP Surface Mount 2 Si 400nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 654-8154
Mfr. Part No.SFH 203
TWD27.20
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm T-1 3/4 Through Hole 2 Si 750nm 1100nm - 5.9mm 4.8mm 9mm 20 ° -
RS Stock No. 176-4202
Mfr. Part No.SFH 2700
TWD19.20
Each (In a Pack of 20)
units
Infrared 1100nm Chip LED Surface Mount 2 Si 300nm 1100nm 0.12µs 2mm 1.25mm 0.8mm 70 ° -
RS Stock No. 183-7138
Mfr. Part No.PIN-6DI
TWD864.60
Each (In a Tray of 10)
units
Infrared 970nm TO-8 Through Hole 3 Si 350nm 1100nm - - - 0.19in - -
RS Stock No. 183-7136
Mfr. Part No.PIN-5DP/SB
TWD689.60
Each (In a Tray of 10)
units
Infrared 410nm TO-5 Through Hole 2 Si 350nm 1100nm - - - 0.18in - -
RS Stock No. 165-6173
Mfr. Part No.BPV10
BrandVishay
TWD17.00
Each (In a Bag of 1000)
units
- - T-1 3/4 Through Hole - - - - - 8.6mm 5mm - - -
RS Stock No. 710-3838
Mfr. Part No.TEMD5510FX01
BrandVishay
TWD75.60
Each (In a Pack of 5)
units
Visible Light 540nm SMD Surface Mount 2 Si 430nm 610nm - 5mm 4.25mm 1.08mm 65 ° -
New
RS Stock No. 215-1783
Mfr. Part No.1541021ECA170
TWD14.80
Each (In a Pack of 25)
units
Infrared 940nm 0805 Surface Mount 2 Si - - - - - - 110 ° -
RS Stock No. 168-5163
Mfr. Part No.BPW 34
TWD12.00
Each (On a Reel of 1000)
units
Infrared, Visible Light 850nm DIP Through Hole 2 Si 400nm 1100nm - 4.5mm 4mm 2.2mm 60 ° -
RS Stock No. 815-1241
Mfr. Part No.BPV10
BrandVishay
TWD28.90
Each (In a Pack of 20)
units
- - T-1 3/4 Through Hole - - - - - 8.6mm 5mm - - -
RS Stock No. 161-2056
Mfr. Part No.VEMD5110X01
BrandVishay
TWD21.30
Each (On a Reel of 1000)
units
Infrared 940nm QFN Surface Mount 4 Si 790nm - 100ns 5mm 4mm 0.9mm ±65 ° AEC-Q101
RS Stock No. 183-7127
Mfr. Part No.PIN-44DP
TWD1,343.20
Each (In a Tray of 10)
units
Infrared 970nm TO-8 Through Hole 2 Si 350nm 1100nm - - - 0.205in - -
RS Stock No. 177-5574
Mfr. Part No.PIN-040A
TWD583.20
Each (In a Tray of 10)
units
Infrared 970nm TO-18 Through Hole 3 Si 350nm 1100nm - - - 5.08mm - -