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. 919-0979
Mfr. Part No.VBPW34FAS
BrandVishay
$0.687
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. 768-9401
Mfr. Part No.VBPW34FASR
BrandVishay
$2.02
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. 912-8558
Mfr. Part No.SFH 2500 FA-Z
$0.545
Each (On a Reel of 1000)
units
Infrared 900nm SMR Surface Mount 2 Si 750nm 1100nm - 7.7mm 6mm 6mm 15 ° -
RS Stock No. 915-4850
Mfr. Part No.BP 104 FASR-Z
$1.024
Each (In a Pack of 20)
units
- 880nm - Surface Mount 2 Si - 880nm 0.02µs 4.5mm 4mm 1.2mm ±60 ° -
RS Stock No. 184-7283
Mfr. Part No.1540051EA3590
$0.734
Each (In a Pack of 25)
units
- 940nm 5 Through Hole 2 Si 400nm 1100nm - 5mm 5mm 8.7mm 35 ° -
RS Stock No. 168-5287
Mfr. Part No.BPW 34 FA
$0.711
Each (In a Tube of 1000)
units
Infrared 880nm DIP Through Hole 2 Si 730nm 1100nm - 4.5mm 4mm 2.2mm 60 ° -
RS Stock No. 185-9625
Mfr. Part No.MICROFJ-40035-TSV-TR1
$142.80
Each
units
- - TSV Surface Mount 4 Si 200nm 900nm - 4mm 4mm 0.46mm - -
RS Stock No. 848-6281
Mfr. Part No.UV-035EQ
$81.33
Each
units
Ultraviolet 720nm TO-8 Through Hole 2 Si - - - - - 5.21mm - -
RS Stock No. 124-7164
Mfr. Part No.S3274-05
$12.15
Each
units
Infrared 960nm DIP Through Hole 4 - 760nm 1100nm - 4.1mm 5mm 1.8mm - -
RS Stock No. 654-8154
Mfr. Part No.SFH 203
$1.396
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. 183-7151
Mfr. Part No.PIN-SPOT2D
$38.70
Each
units
- 970nm TO-5 Through Hole 3 Si 350nm 1100nm - - - 0.11in - -
RS Stock No. 497-5677
Mfr. Part No.BPX 65
$10.32
Each
units
Infrared, Ultraviolet, Visible Light 850nm TO-18 Through Hole 2 Si 350nm 1100nm - 5.6mm 5.6mm 5.5mm 40 ° -
RS Stock No. 654-8659
Mfr. Part No.SFH 206 K
$1.862
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm T-1 3/4 Through Hole 2 Si 400nm 1100nm - 5.1mm 4.1mm 6.9mm 60 ° -
RS Stock No. 168-5298
Mfr. Part No.BP 104 S-Z
$0.575
Each (On a Reel of 1500)
units
Infrared, Visible Light 850nm DIP Surface Mount 2 Si 400nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 652-0207
Mfr. Part No.BPW 34 S-Z
$2.308
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. 183-7131
Mfr. Part No.PIN-10DP
$149.86
Each (In a Tray of 10)
units
Infrared 970nm BNC Surface Mount 1 Si 350nm 1100nm - - - 1.03in - -
RS Stock No. 165-6969
Mfr. Part No.BPV23NF
BrandVishay
$0.598
Each (In a Bag of 1000)
units
Infrared 940nm - Through Hole 2 Si 790nm 1050nm - - - - ±60 ° -
RS Stock No. 183-7118
Mfr. Part No.FCI-InGaAs-3000-20
$464.27
Each (In a Tray of 10)
units
Infrared 1550nm TO-46, TO-5 Through Hole 2 InGaAs 1100nm 1620nm - - - 4.7mm - -
RS Stock No. 183-7138
Mfr. Part No.PIN-6DI
$47.98
Each (In a Tray of 10)
units
Infrared 970nm TO-8 Through Hole 3 Si 350nm 1100nm - - - 0.19in - -
RS Stock No. 183-7191
Mfr. Part No.PIN-6D
$53.60
Each
units
Infrared 970nm TO-8 Through Hole 2 Si 350nm 1100nm - - - 0.205in - -
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