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. 165-3018
Mfr. Part No.VBPW34FASR
BrandVishay
$0.687
Each (On a Reel of 1000)
units
Infrared 950nm Reverse Gullwing Surface Mount 2 Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm ±65 ° -
RS Stock No. 912-8510
Mfr. Part No.BPW 34 FAS-Z
$0.613
Each (On a Reel of 1500)
units
Infrared 880nm DIP Surface Mount 2 Si 730nm 1100nm - 4.5mm 4mm 1.2mm 60 ° -
RS Stock No. 654-8671
Mfr. Part No.SFH 203 P
$1.836
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 75 ° -
RS Stock No. 846-761
Mfr. Part No.OSD1-5T
BrandCentronic
$16.65
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole - Si 430nm 900nm - - - - - -
RS Stock No. 848-6263
Mfr. Part No.PIN-10DPI/SB
$172.61
Each
units
Visible Light 410nm Metal Through Hole 2 Si 350nm 1100nm - - - 4.95mm - -
RS Stock No. 165-2632
Mfr. Part No.BPV22F
BrandVishay
$0.657
Each (In a Bag of 1000)
units
Infrared 950nm - Through Hole 2 Si 870nm 1050nm - 4.5mm 5mm 6mm 60 ° -
RS Stock No. 146-2108
Mfr. Part No.QSD2030F
$0.395
Each (In a Bag of 250)
units
- 880nm - Through Hole 2 Si 700nm 1100nm - - - 8.77mm 20 ° -
RS Stock No. 768-9394
Mfr. Part No.VBP104S
BrandVishay
$1.888
Each (In a Bag of 5)
units
Infrared, Visible Light 940nm GW Surface Mount 2 Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm ±65 ° -
RS Stock No. 185-9634
Mfr. Part No.MICRORB-10020-MLP-TR1
$99.90
Each
units
- - MLP Surface Mount 4 Si 300nm 1050nm - 1.5mm 1.5mm 0.65mm - -
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. 768-9414
Mfr. Part No.VBPW34SR
BrandVishay
$2.02
Each (In a Bag of 5)
units
Infrared, Visible Light 940nm Reverse Gullwing Surface Mount 2 Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm ±65 ° -
RS Stock No. 184-1648
Mfr. Part No.PIN-5DPI
$31.71
Each (In a Tray of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 168-5425
Mfr. Part No.SFH 2400 FAR
$0.78
Each (On a Reel of 2000)
units
Infrared 900nm DIP Surface Mount 3 Si 750nm 1100nm - - - - - -
RS Stock No. 699-7616
Mfr. Part No.BPW34
BrandVishay
$1.836
Each (In a Pack of 5)
units
Infrared, Visible Light 900nm - Through Hole 2 Si 430nm 1100nm - 4.5mm 4.3mm 2mm 65 ° -
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. 654-8069
Mfr. Part No.SFH 205 FA
$2.076
Each (In a Pack of 5)
units
Infrared 900nm T-1 3/4 Through Hole 2 Si 740nm 1100nm - 5.1mm 4.1mm 6.9mm 60 ° -
RS Stock No. 124-9083
Mfr. Part No.SFH 2200
$1.499
Each (In a Pack of 20)
units
- - - - - - - - - - - - - -
RS Stock No. 184-1646
Mfr. Part No.PIN-020A
$29.82
Each (In a Tray of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 170-9644
Mfr. Part No.BPW 34 FSR-Z
$0.873
Each (On a Reel of 1500)
units
- 950nm DIL Surface Mount 2 Si - 950nm 0.02µs 4.5mm 4mm 1.2mm ±60 ° -
RS Stock No. 768-9391
Mfr. Part No.VBP104FASR
BrandVishay
$1.832
Each (In a Bag of 5)
units
Infrared 950nm Reverse Gullwing Surface Mount 2 Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm ±65 ° -
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