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. 654-8053
Mfr. Part No.SFH 229 FA
TWD16
Each (In a Pack of 10)
units
Infrared 900nm T-1 Through Hole 2 - Si 730nm 1100nm 10ns 4mm 3mm 5.2mm -
RS Stock No. 168-5293
Mfr. Part No.SFH 229 FA
TWD13
Each (In a Bag of 2000)
units
Infrared 900nm - Through Hole 2 - Si 730nm 1100nm 10ns 4mm 3mm 5.2mm -
RS Stock No. 654-8659
Mfr. Part No.SFH 206 K
TWD35
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 -
RS Stock No. 168-5312
Mfr. Part No.SFH 206 K
TWD22
Each (On a Tape of 1000)
units
Infrared, Visible Light 850nm - Through Hole 2 - Si 400nm 1100nm - 5.1mm 4.1mm 6.9mm -
RS Stock No. 654-8104
Mfr. Part No.BP 104 F
TWD24
Each (In a Pack of 5)
units
Infrared 950nm DIP Through Hole 2 - Si 800nm 1100nm - 4.5mm 4mm 2.2mm -
RS Stock No. 168-5296
Mfr. Part No.BP 104 F
TWD13
Each (In a Bag of 1000)
units
Infrared 950nm DIP Through Hole 2 - Si 800nm 1100nm - 4.5mm 4mm 2.2mm -
RS Stock No. 913-3285
Mfr. Part No.SFH 2701
TWD11
Each (On a Reel of 3000)
units
Infrared, Visible Light 820nm Chip LED Surface Mount 2 - - 400nm 1050nm - 3.35mm 1.65mm 1.25mm -
RS Stock No. 194-076
Mfr. Part No.OSD15-5T
BrandCentronic
TWD740
Each
units
Infrared, Visible Light 900nm TO-5 Through Hole - - Si 430nm 900nm - - - - -
RS Stock No. 497-5677
Mfr. Part No.BPX 65
TWD163
Each
units
Infrared, Ultraviolet, Visible Light 850nm TO-18 Through Hole 2 - Si 350nm 1100nm - 5.6mm 5.6mm 5.5mm -
RS Stock No. 912-8306
Mfr. Part No.BPX 65
TWD107
Each (In a Tray of 120)
units
Infrared 850nm TO-18 Through Hole 2 - Si 350nm 1100nm 0.012µs - 5.5mm - -
RS Stock No. 768-9398
Mfr. Part No.VBP104SR
BrandVishay
TWD40
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. 124-7159
Mfr. Part No.S5972
TWD501
Each
units
Infrared, Visible Light 800nm TO-18 Through Hole 3 - Si 320nm 1000nm - - - 3.6mm -
RS Stock No. 846-705
Mfr. Part No.OSD15-E
BrandCentronic
TWD1,606
Each
units
Visible Light 630nm TO-5 Through Hole 3 - Si 350nm 800nm - - - 12.7mm -
RS Stock No. 124-7163
Mfr. Part No.S4584-06
TWD174
Each
units
Infrared 960nm SMD Surface Mount 4 - - 320nm 1100nm - 4.1mm 5mm 1.8mm -
RS Stock No. 627-8366
Mfr. Part No.VTB8440BH
TWD110
Each
units
Visible Light 580nm Ceramic Through Hole 2 - Si 330nm 720nm - - - 7.87mm -
RS Stock No. 768-9401
Mfr. Part No.VBPW34FASR
BrandVishay
TWD32
Each (In a Bag of 5)
units
Infrared 950nm Reverse Gullwing Surface Mount 2 - Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 699-7616
Mfr. Part No.BPW34
BrandVishay
TWD49
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. 165-3018
Mfr. Part No.VBPW34FASR
BrandVishay
TWD12
Each (On a Reel of 1000)
units
Infrared 950nm Reverse Gullwing Surface Mount 2 - Si 780nm 1050nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 165-2428
Mfr. Part No.BPW34
BrandVishay
TWD17
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. 124-3361
Mfr. Part No.SFH 2440 L
TWD33
Each (In a Pack of 10)
units
Infrared 620nm DIL Surface Mount 2 - Si 400nm 690nm 0.09µs 4.4mm 3.9mm 1.15mm -