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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Omschrijving Prijs 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-stocknr. 846-749
FabrikantnummerAEPX65
FabrikantCentronic
€ 26,33
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Aantal stuks
- - TO-46 Through Hole 2 Si - - - 0.9mm 0.9mm 0.63mm - -
RS-stocknr. 183-7181
FabrikantnummerPIN-10DP
€ 89,50
Each
Aantal stuks
Infrared 970nm BNC Surface Mount 1 Si 350nm 1100nm - - - 1.03in - -
RS-stocknr. 710-3822
FabrikantnummerTEMD5020X01
FabrikantVishay
€ 1,38
Each (In a Pack of 5)
Aantal stuks
Infrared, Visible Light 900nm - Surface Mount 2 Si 430nm 1100nm - 5mm 4.24mm 1.12mm 65 ° -
RS-stocknr. 185-9609
FabrikantnummerMICROFC-60035-SMT-TR1
FabrikantON Semiconductor
€ 64,47
Each
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Visible Light - SMT Surface Mount 4 Si 300nm 950nm - 7mm 7mm 0.65mm - -
RS-stocknr. 2508662139
FabrikantnummerSLD-70BG2A
FabrikantSilonex
€ 6,90
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 2508662319
FabrikantnummerSLD-68EBG1A
FabrikantSilonex
€ 11,00
Each
Aantal stuks
- - - - - - - - - - - - - -