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. 654-9034
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. 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. 168-5244
Mfr. Part No.SFH 2400 FA-Z
HK$3.527
Each (On a Reel of 2000)
units
Infrared 900nm DIP Surface Mount 3 - Si 750nm 1100nm - 2.1mm 2.7mm 1.05mm -
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. 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. 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. 124-7165
Mfr. Part No.S5629
HK$90.67
Each
units
Infrared 960nm SMD Surface Mount 20 - - 760nm 1100nm - 9.7mm 5.4mm 1.7mm -
RS Stock No. 124-7166
Mfr. Part No.S3932
HK$495.23
Each
units
Infrared 920nm - Through Hole 4 - - 320nm 1100nm - 15.2mm 0.7mm 1.5mm -
RS Stock No. 183-7165
Mfr. Part No.UV-035DQC
HK$729.75
Each
units
Ultraviolet 980nm Ceramic Through Hole 2 - Si - - - 0.4in - 0.08in -
RS Stock No. 177-5563
Mfr. Part No.PIN-UV-100DQC
HK$1,511.145
Each (In a Box of 2)
units
Ultraviolet 980nm Ceramic Through Hole 2 - Si 190nm 1100nm - 16.51mm 14.99mm 2.03mm -
RS Stock No. 185-9622
Mfr. Part No.MICROFJ-30020-TSV-TR1
HK$505.49
Each
units
- - SMT Surface Mount 4 - Si 200nm 900nm - 3.16mm 3.16mm 0.46mm -
RS Stock No. 161-1862
Mfr. Part No.SFH 2200 FA
HK$2.94
Each (On a Reel of 1500)
units
- 940nm Top LED Surface Mount 2 - Si - 940nm 0.04µs 5.09mm 4mm 0.85mm -
RS Stock No. 161-2166
Mfr. Part No.VEMD1160X01
BrandVishay
HK$3.558
Each (In a Pack of 25)
units
- 840nm 0805 Surface Mount 2 - Si 700nm - 80ns 2mm 1.25mm 0.85mm -
RS Stock No. 161-2060
Mfr. Part No.VEMD6060X01
BrandVishay
HK$4.418
Each (On a Reel of 3000)
units
Infrared 820nm 1206 Surface Mount 3 - Si 380nm - 50ns 4mm 2mm 1.05mm -
RS Stock No. 183-7167
Mfr. Part No.OSD15-0
HK$186.84
Each
units
Infrared 900nm TO-5 Through Hole 2 - Si 350nm 1100nm - - - 0.13in -
RS Stock No. 919-5801
Mfr. Part No.VBPW34S
BrandVishay
HK$3.07
Each (On a Reel of 1000)
units
Infrared, Visible Light 940nm GW Surface Mount 2 - Si 430nm 1100nm - 4.4mm 3.9mm 1.2mm -
RS Stock No. 168-5287
Mfr. Part No.BPW 34 FA
HK$2.57
Each (In a Tube of 1000)
units
Infrared 880nm DIP Through Hole 2 - Si 730nm 1100nm - 4.5mm 4mm 2.2mm -
RS Stock No. 176-9781
Mfr. Part No.FCI-InGaAs-120
HK$269.64
Each
units
- 1700nm TO-46 Through Hole 3 - InGaAs 900nm 1700nm 0.3 (Maximum)ns - - 3.75mm -
RS Stock No. 165-2447
Mfr. Part No.BPV22NF
BrandVishay
HK$3.09
Each (In a Bag of 4000)
units
Infrared 940nm Side Looker Through Hole 2 - Si 790nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 161-1863
Mfr. Part No.SFH 2201
HK$3.86
Each (On a Reel of 1500)
units
- 940nm Top LED Surface Mount 2 - Si - 940nm 0.04µs 5.09mm 4mm 0.85mm -
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