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.

...
Read more Read less

Filters

Viewing 1 - 20 of 316 products
Results per page
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. 247-240
Mfr. Part No.BPW 34
$1.798
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm DIP Through Hole 2 Si 400nm 1100nm - 4.5mm 4mm 2.2mm 60 ° -
RS Stock No. 168-5163
Mfr. Part No.BPW 34
$0.55
Each (On a Reel of 1000)
units
Infrared, Visible Light 850nm DIP Through Hole 2 Si 400nm 1100nm - 4.5mm 4mm 2.2mm 60 ° -
RS Stock No. 124-7165
Mfr. Part No.S5629
$16.62
Each
units
Infrared 960nm SMD Surface Mount 20 - 760nm 1100nm - 9.7mm 5.4mm 1.7mm - -
RS Stock No. 654-8895
Mfr. Part No.SFH 213 FA
$1.764
Each (In a Pack of 5)
units
Infrared 900nm T-1 3/4 Through Hole 2 Si 750nm 1100nm - 5.9mm 5mm 9mm 10 ° -
RS Stock No. 912-8564
Mfr. Part No.SFH 213 FA
$0.607
Each (In a Bag of 1000)
units
Infrared 900nm - Through Hole 2 Si 750nm 1100nm - 5.9mm 5mm 9mm 10 ° -
RS Stock No. 124-7161
Mfr. Part No.S1223
$42.29
Each
units
Infrared, Visible Light 960nm TO-5 Through Hole 2 Si 320nm 1100nm - - - 4.1mm - -
RS Stock No. 497-5661
Mfr. Part No.BPW 21
$20.60
Each
units
Infrared, Ultraviolet, Visible Light 550nm TO-39 Through Hole 2 Si 350nm 820nm - 9.5mm 9.5mm 3.7mm 55 ° -
RS Stock No. 168-5245
Mfr. Part No.BPW 21
$16.83
Each (In a Box of 40)
units
Infrared, Ultraviolet, Visible Light 550nm TO-39 Through Hole 2 Si 350nm 820nm - 9.5mm 9.5mm 3.7mm 55 ° -
RS Stock No. 168-5300
Mfr. Part No.KOM 2125-Z
$7.599
Each (On a Reel of 1400)
units
Infrared, Visible Light 850nm DIP Surface Mount 3 Si 400nm 1100nm - 8.5mm 4.5mm 1.2mm 60 ° -
RS Stock No. 913-3285
Mfr. Part No.SFH 2701
$0.478
Each (On a Reel of 3000)
units
Infrared, Visible Light 820nm Chip LED Surface Mount 2 - 400nm 1050nm - 3.35mm 1.65mm 1.25mm 60 ° -
RS Stock No. 165-2633
Mfr. Part No.BPW41N
BrandVishay
$0.663
Each (In a Bag of 1000)
units
Infrared 950nm Side Looker Through Hole 2 Si 870nm 1050nm - 5mm 3mm 6.4mm 65 ° -
RS Stock No. 654-8233
Mfr. Part No.KOM 2125-Z
$11.52
Each
units
Infrared, Visible Light 850nm DIP Surface Mount 3 Si 400nm 1100nm - 8.5mm 4.5mm 1.2mm 60 ° -
RS Stock No. 124-7158
Mfr. Part No.S5971
$21.62
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole 3 Si 320nm 1060nm - - - 3.6mm - -
RS Stock No. 699-7610
Mfr. Part No.BPW41N
BrandVishay
$1.52
Each (In a Pack of 5)
units
Infrared 950nm Side Looker Through Hole 2 Si 870nm 1050nm - 5mm 3mm 6.4mm 65 ° -
RS Stock No. 627-8366
Mfr. Part No.VTB8440BH
$10.04
Each
units
Visible Light 580nm Ceramic Through Hole 2 Si 330nm 720nm - - - 7.87mm - -
RS Stock No. 564-021
Mfr. Part No.OSD5.8-7Q
BrandCentronic
$78.17
Each
units
Infrared, Ultraviolet 340nm TO-39 Through Hole 2 Si 1100nm 190nm - 9mm 9mm 6.6mm - -
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. 846-777
Mfr. Part No.OSD5-5T
BrandCentronic
$50.30
Each
units
Infrared, Visible Light 900nm TO-5 Through Hole - Si 430nm 900nm - - - - - -
RS Stock No. 818-4415
Mfr. Part No.VEMD10940F
BrandVishay
$0.344
Each (In a Pack of 100)
units
Infrared 920nm - Surface Mount 2 Si 830nm 950nm - 3mm 2mm 1mm ±75 ° -
RS Stock No. 708-2813
Mfr. Part No.BPW21R
BrandVishay
$20.46
Each
units
Visible Light 565nm TO-5 Through Hole 2 Si 420nm 675nm - 9.1mm 9.1mm 3.1mm 50 ° -
Related Products
Bipolar transistor output opto-couplers from Cosmo Electronics. Both ...
Description:
Bipolar transistor output opto-couplers from Cosmo Electronics. Both single and dual through-hole devices are available as well as a single-channel SMT version.
The 5T series, from Centronic, are a family ...
Description:
The 5T series, from Centronic, are a family of silicon photodetectors. They have a high blue sensitivity with high resistance and low dark leakage current. They offer photovoltaic or reverse bias operation modes for a lower capacitance. The 5T photodetectors ...
Applications. Industrial Automation (Machine Controls, Light Barriers, Vision ...
Description:
Applications. Industrial Automation (Machine Controls, Light Barriers, Vision Controls)Features: Package: black epoxy Very small SMT package. Especially suitable for applications from 700 nm to 1100 nm.
This family of IR photodiodes, from OSRAM Opto ...
Description:
This family of IR photodiodes, from OSRAM Opto Semiconductors, are from the BPW 34 series. They come in surface mount (SMD) or through-hole DIL plastic packages with a radiant sensitive area of 2.65 x 2.65 mm². They BPW 34 IR ...