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. 654-7785
Mfr. Part No.BPX 61
$20.57
Each
units
Infrared, Visible Light 850nm TO-5 Through Hole 2 Si 400nm 1100nm - 9.5mm 9.5mm 3.7mm 55 ° -
RS Stock No. 165-6113
Mfr. Part No.VEMD10940F
BrandVishay
$0.182
Each (On a Reel of 3000)
units
Infrared 920nm - Surface Mount 2 Si 830nm 950nm - 3mm 2mm 1mm ±75 ° -
RS Stock No. 194-076
Mfr. Part No.OSD15-5T
BrandCentronic
$66.72
Each
units
Infrared, Visible Light 900nm TO-5 Through Hole - Si 430nm 900nm - - - - - -
RS Stock No. 177-7627
Mfr. Part No.BPW21R
BrandVishay
$11.147
Each (In a Box of 500)
units
Visible Light 565nm TO-5 Through Hole 2 Si 420nm 675nm - 9.1mm 9.1mm 3.1mm 50 ° -
RS Stock No. 708-2813
Mfr. Part No.BPW21R
BrandVishay
$20.16
Each
units
Visible Light 565nm TO-5 Through Hole 2 Si 420nm 675nm - 9.1mm 9.1mm 3.1mm 50 ° -
RS Stock No. 846-777
Mfr. Part No.OSD5-5T
BrandCentronic
$38.84
Each
units
Infrared, Visible Light 900nm TO-5 Through Hole - Si 430nm 900nm - - - - - -
RS Stock No. 177-5571
Mfr. Part No.PIN-SPOT-4D
$120.318
Each (In a Tray of 5)
units
- 970nm TO-5 Through Hole 5 Si 350nm 1100nm - - - 3.61mm - -
RS Stock No. 168-5285
Mfr. Part No.BPX 61
$15.635
Each (In a Box of 40)
units
Infrared, Visible Light 850nm TO-5 Through Hole 2 Si 400nm 1100nm - 9.5mm 9.5mm 3.7mm 55 ° -
RS Stock No. 564-037
Mfr. Part No.OSD 35-7X CQ
BrandCentronic
$137.05
Each
units
Ultraviolet 340nm - Through Hole - Si 194nm 400nm - - - 8mm - -
RS Stock No. 848-6235
Mfr. Part No.PIN-SPOT-4D
$81.43
Each
units
- 970nm TO-5 Through Hole 5 Si 350nm 1100nm - - - 3.61mm - -
RS Stock No. 145-2199
Mfr. Part No.BPV23F
BrandVishay
$0.578
Each (In a Bag of 1000)
units
Infrared 950nm Side Looker Through Hole 2 Si 870nm 1050nm - 4.5mm 5mm 6mm 60 ° -
RS Stock No. 654-8261
Mfr. Part No.BPW 34 SR-Z
$1.002
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. 915-4850
Mfr. Part No.BP 104 FASR-Z
$1.014
Each (In a Pack of 20)
units
- 880nm - Surface Mount 2 Si - 880nm 0.02µs 4.5mm 4mm 1.2mm ±60 ° -
RS Stock No. 185-9607
Mfr. Part No.MICROFC-30035-SMT-TR1
$93.10
Each
units
UV, Visible Light - SMT Surface Mount 4 Si 300nm 950nm - 4mm 4mm 0.65mm - -
RS Stock No. 176-4149
Mfr. Part No.SFH 2711
$0.434
Each (On a Reel of 3000)
units
Infrared 750nm Chip LED Surface Mount 2 Si 470nm 670nm 0.06µs 2mm 1.25mm 0.8mm 55 ° -
RS Stock No. 654-8788
Mfr. Part No.SFH 2505
$0.942
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm SMR Through Hole 2 Si 400nm 1100nm - 6mm 4.8mm 7.7mm 15 ° -
RS Stock No. 710-3822
Mfr. Part No.TEMD5020X01
BrandVishay
$2.838
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. 161-1862
Mfr. Part No.SFH 2200 FA
$0.693
Each (On a Reel of 1500)
units
- 940nm Top LED Surface Mount 2 Si - 940nm 0.04µs 5.09mm 4mm 0.85mm ±60 ° -
RS Stock No. 161-2053
Mfr. Part No.VEMD5010X01
BrandVishay
$0.894
Each (On a Reel of 1000)
units
Infrared 940nm QFN Surface Mount 4 Si 430nm - 100ns 5mm 4mm 0.9mm ±65 ° AEC-Q101
RS Stock No. 168-5425
Mfr. Part No.SFH 2400 FAR
$0.773
Each (On a Reel of 2000)
units
Infrared 900nm DIP Surface Mount 3 Si 750nm 1100nm - - - - - -
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