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 Spectral Range of Sensitivity Diode Material Minimum Wavelength Detected Maximum Wavelength Detected Typical Fall Time Length Width Height Dimensions
RS Stock No. 699-7616
Mfr. Part No.BPW34
BrandVishay
$1.962
Each (In a Pack of 5)
units
Infrared, Visible Light 900nm - Through Hole 2 - Si 430nm 1100nm - 4.5mm 4.3mm 2mm -
RS Stock No. 165-2428
Mfr. Part No.BPW34
BrandVishay
$0.801
Each (On a Reel of 3000)
units
Infrared, Visible Light 900nm - Through Hole 2 - Si 430nm 1100nm - 4.5mm 4.3mm 2mm -
RS Stock No. 145-1980
Mfr. Part No.TEFD4300
BrandVishay
$0.186
Each (In a Bag of 1000)
units
Infrared 950nm - Through Hole 2 - Si 350nm 1120nm - - - 4.5mm -
RS Stock No. 773-0418
Mfr. Part No.TEFD4300
BrandVishay
$0.752
Each (In a Bag of 10)
units
Infrared 950nm T-1 Through Hole 2 - Si 350nm 1120nm - - - 4.5mm -
RS Stock No. 177-7627
Mfr. Part No.BPW21R
BrandVishay
$10.133
Each (In a Box of 500)
units
Visible Light 565nm TO-5 Through Hole 2 - Si 420nm 675nm - 9.1mm 9.1mm 3.1mm -
RS Stock No. 708-2813
Mfr. Part No.BPW21R
BrandVishay
$20.49
Each
units
Visible Light 565nm TO-5 Through Hole 2 - Si 420nm 675nm - 9.1mm 9.1mm 3.1mm -
RS Stock No. 708-2804
Mfr. Part No.BPW20RF
BrandVishay
$9.06
Each
units
Infrared, Visible Light 920nm TO-5 Through Hole 2 - Si 400nm 1100nm - 9.1mm 9.1mm 3.1mm -
RS Stock No. 145-2618
Mfr. Part No.BPW20RF
BrandVishay
$6.599
Each (In a Bag of 500)
units
Infrared, Visible Light 920nm TO-5 Through Hole 2 - Si 400nm 1100nm - 9.1mm 9.1mm 3.1mm -
RS Stock No. 699-7607
Mfr. Part No.BPV10NF
BrandVishay
$1.565
Each (In a Pack of 10)
units
Infrared 940nm T-1 3/4 Through Hole 2 - Si 790nm 1050nm - 5.75mm 5.75mm 8.6mm -
RS Stock No. 165-2577
Mfr. Part No.BPV10NF
BrandVishay
$0.599
Each (In a Bag of 1000)
units
Infrared 940nm - Through Hole 2 - Si 790nm 1050nm - 5.75mm 5.75mm 8.6mm -
RS Stock No. 708-2816
Mfr. Part No.BPW24R
BrandVishay
$6.16
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole 2 - Si 600nm 1050nm - 5.5mm 5.5mm 6.15mm -
RS Stock No. 177-7613
Mfr. Part No.BP104
BrandVishay
$0.566
Each (In a Box of 3000)
units
Infrared 950nm - Through Hole 2 - Si 870nm 1050nm - 4.65mm 4.3mm 2mm -
RS Stock No. 699-7597
Mfr. Part No.BP104
BrandVishay
$1.666
Each (In a Pack of 5)
units
Infrared 950nm - Through Hole 2 - Si 870nm 1050nm - 4.65mm 4.3mm 2mm -
RS Stock No. 710-3822
Mfr. Part No.TEMD5020X01
BrandVishay
$0.80
Each (In a Pack of 5)
units
Infrared, Visible Light 900nm - Surface Mount 2 - Si 430nm 1100nm - 5mm 4.24mm 1.12mm -
RS Stock No. 146-1423
Mfr. Part No.BPW24R
BrandVishay
$3.882
Each (In a Bag of 1000)
units
Infrared, Visible Light 900nm TO-18 Through Hole 2 - Si 600nm 1050nm - 5.5mm 5.5mm 6.15mm -
RS Stock No. 165-2704
Mfr. Part No.TEMD5020X01
BrandVishay
$0.98
Each (On a Reel of 1500)
units
Infrared, Visible Light 900nm - Surface Mount 2 - Si 430nm 1100nm - 5mm 4.24mm 1.12mm -
RS Stock No. 699-7604
Mfr. Part No.BPV22NF
BrandVishay
$1.558
Each (In a Pack of 5)
units
Infrared 940nm Side Looker Through Hole 2 - Si 790nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 815-1241
Mfr. Part No.BPV10
BrandVishay
$0.669
Each (In a Pack of 20)
units
- - T-1 3/4 Through Hole - - - - - - 8.6mm 5mm - -
RS Stock No. 145-2199
Mfr. Part No.BPV23F
BrandVishay
$0.525
Each (In a Bag of 1000)
units
Infrared 950nm Side Looker Through Hole 2 - Si 870nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 165-6113
Mfr. Part No.VEMD10940F
BrandVishay
$0.12
Each (On a Reel of 3000)
units
Infrared 920nm - Surface Mount 2 - Si 830nm 950nm - 3mm 2mm 1mm -