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. 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. 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. 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. 195-697
Mfr. Part No.SFH 203 FA
$1.34
Each
units
Infrared 900nm T-1 3/4 Through Hole 2 Si 800nm 1100nm - 5.9mm 5.9mm 9mm 20 ° -
RS Stock No. 818-4415
Mfr. Part No.VEMD10940F
BrandVishay
$0.338
Each (In a Pack of 100)
units
Infrared 920nm - Surface Mount 2 Si 830nm 950nm - 3mm 2mm 1mm ±75 ° -
RS Stock No. 654-8643
Mfr. Part No.SFH 229
$1.331
Each (In a Pack of 10)
units
Infrared, Ultraviolet, Visible Light 860nm T-1 Through Hole 2 Si 380nm 1100nm - 4mm 3mm 5.2mm 17 ° -
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. 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. 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. 537-7478
Mfr. Part No.BPW 34 FS-Z
$4.75
Each
units
Infrared 950nm DIP Surface Mount 2 Si 780nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 176-9780
Mfr. Part No.FCI-InGaAs-75
$51.95
Each
units
- 1700nm TO-46 Through Hole 3 InGaAs 900nm 1700nm 0.2 (Maximum)ns - - 3.75mm - -
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. 168-5312
Mfr. Part No.SFH 206 K
$0.787
Each (On a Tape of 1000)
units
Infrared, Visible Light 850nm - Through Hole 2 Si 400nm 1100nm - 5.1mm 4.1mm 6.9mm 60 ° -
RS Stock No. 654-7892
Mfr. Part No.BPW 34 FAS-Z
$1.694
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. 188-6588
Mfr. Part No.AFBR-S4N66C013
BrandBroadcom
$91.34
Each
units
Visible Light 420nm CSP Surface Mount 32 Si 300nm 900nm 56ns 6.14mm 6.14mm 0.3mm - -
RS Stock No. 184-7270
Mfr. Part No.1541141ECA570
$0.822
Each (In a Pack of 25)
units
Infrared 940nm 1104 Surface Mount 2 Si 700nm 1100nm - 3mm 1mm 2.02mm 150 ° -
RS Stock No. 185-9624
Mfr. Part No.MICROFJ-30035-TSV-TR1
$103.65
Each
units
- - SMT Surface Mount 4 Si 200nm 900nm - 3.16mm 3.16mm 0.46mm - -
RS Stock No. 165-3014
Mfr. Part No.VBP104FAS
BrandVishay
$0.637
Each (On a Reel of 1000)
units
Infrared 950nm GW Surface Mount 2 Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm ±65 ° -
RS Stock No. 826-4625
Mfr. Part No.IS471FE
BrandSharp
$6.974
Each (In a Pack of 5)
units
Infrared 800 → 900nm - - 4 - 700nm 1150nm - - - - - -
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