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 41 - 60 of 315 products
Results per page
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. 699-7701
Mfr. Part No.VEMD2020X01
BrandVishay
HK$2.394
Each (In a Pack of 20)
units
Infrared 940nm Subminiature Surface Mount 2 - Si 750nm 1050nm - 2.3mm 2.3mm 2.77mm -
RS Stock No. 564-021
Mfr. Part No.OSD5.8-7Q
BrandCentronic
HK$386.73
Each
units
Infrared, Ultraviolet 340nm TO-39 Through Hole 2 - Si 1100nm 190nm - 9mm 9mm 6.6mm -
RS Stock No. 654-8249
Mfr. Part No.SFH 2430-Z
HK$8.418
Each (In a Pack of 5)
units
Infrared, Visible Light 570nm DIP Surface Mount 2 - Si 400nm 900nm - 4.5mm 4mm 1.2mm -
RS Stock No. 654-9034
Mfr. Part No.SFH 235 FA
HK$5.344
Each (In a Pack of 5)
units
Infrared 900nm T-1 3/4 Through Hole 2 - Si 740nm 1120nm - 5.1mm 3.1mm 7.2mm -
RS Stock No. 912-8573
Mfr. Part No.SFH 213
HK$2.52
Each (In a Bag of 1000)
units
Infrared, Visible Light 850nm - Through Hole 2 - Si 400nm 1100nm - 5.9mm 5mm 9mm -
RS Stock No. 918-9483
Mfr. Part No.VEMD2020X01
BrandVishay
HK$1.835
Each (On a Reel of 6000)
units
Infrared 940nm Subminiature Surface Mount 2 - Si 750nm 1050nm - 2.3mm 2.3mm 2.77mm -
RS Stock No. 654-8902
Mfr. Part No.SFH 213
HK$7.28
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm T-1 3/4 Through Hole 2 - Si 400nm 1100nm - 5.9mm 5mm 9mm -
RS Stock No. 768-9414
Mfr. Part No.VBPW34SR
BrandVishay
HK$5.166
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 -
RS Stock No. 168-5319
Mfr. Part No.SFH 235 FA
HK$3.306
Each (In a Bag of 1000)
units
Infrared 900nm - Through Hole 2 - Si 740nm 1120nm - 5.1mm 3.1mm 7.2mm -
RS Stock No. 654-8788
Mfr. Part No.SFH 2505
HK$4.248
Each (In a Pack of 5)
units
Infrared, Visible Light 850nm SMR Through Hole 2 - Si 400nm 1100nm - 6mm 4.8mm 7.7mm -
RS Stock No. 699-7607
Mfr. Part No.BPV10NF
BrandVishay
HK$6.62
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. 919-0988
Mfr. Part No.VBPW34SR
BrandVishay
HK$2.864
Each (On a Reel of 1000)
units
Infrared, Visible Light 940nm Reverse Gullwing Surface Mount 2 - Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 415-5722
Mfr. Part No.S1223-01
HK$71.88
Each
units
Infrared, Ultraviolet, Visible Light 960nm TO-5 Through Hole 2 - Si 320nm 1100nm - 9.1mm 9.1mm 4.1mm -
RS Stock No. 912-8306
Mfr. Part No.BPX 65
HK$25.13
Each (In a Tray of 120)
units
Infrared 850nm TO-18 Through Hole 2 - Si 350nm 1100nm 0.012µs - 5.5mm - -
RS Stock No. 168-5425
Mfr. Part No.SFH 2400 FAR
HK$3.73
Each (On a Reel of 2000)
units
Infrared 900nm DIP Surface Mount 3 - Si 750nm 1100nm - - - - -
RS Stock No. 710-3838
Mfr. Part No.TEMD5510FX01
BrandVishay
HK$14.664
Each (In a Pack of 5)
units
Visible Light 540nm SMD Surface Mount 2 - Si 430nm 610nm - 5mm 4.25mm 1.08mm -
RS Stock No. 919-0739
Mfr. Part No.TEMD5510FX01
BrandVishay
HK$7.07
Each (On a Reel of 1500)
units
Visible Light 540nm SMD Surface Mount 2 - Si 430nm 610nm - 5mm 4.25mm 1.08mm -
RS Stock No. 165-3014
Mfr. Part No.VBP104FAS
BrandVishay
HK$2.49
Each (On a Reel of 1000)
units
Infrared 950nm GW Surface Mount 2 - Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 846-777
Mfr. Part No.OSD5-5T
BrandCentronic
HK$112.18
Each
units
Infrared, Visible Light 900nm TO-5 Through Hole - - Si 430nm 900nm - - - - -
RS Stock No. 768-9382
Mfr. Part No.VBP104FAS
BrandVishay
HK$5.11
Each (On a Tape of 5)
units
Infrared 950nm GW Surface Mount 2 - Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm -
Related Products
The K7L-AT50 liquid leakage sensor amplifier by Omron ...
Description:
The K7L-AT50 liquid leakage sensor amplifier by Omron can detect a wide variety of liquids ranging from water to chemicals with low conductivity. It internally oscillates AC signals provided to the Sensing Band, protecting it from electric corrosion and ensuring ...
Flowline's general purpose range of level controller displays ...
Description:
Flowline's general purpose range of level controller displays which cover an assortment of engineering units. Comes equipped with either a 4-20mA or 0-10mA level sensor inputs, with various configurations to ensure your application is covered. Optional 2 or 4 programmable ...
A series of liquid level control relays from ...
Description:
A series of liquid level control relays from ABB for conductive liquids. The CM-ENS range gives a choice of 3 variants each with a compact, space saving housing with the highest fire protection and environmentally friendly materials. Installation is quick ...
The MultiTrode indicator probe provides continuous level indication ...
Description:
The MultiTrode indicator probe provides continuous level indication and pump control. The probe can be connected to a PLC or dedicated pump controller system. The 10 digital outputs provide a mechanism for simple pump control without any other control device. ...