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. 124-7160
Mfr. Part No.S5973
HK$142.54
Each
units
Infrared, Visible Light 760nm TO-18 Through Hole 3 - Si 320nm 1000nm - - - 3.6mm -
RS Stock No. 165-2705
Mfr. Part No.TEMD5010X01
BrandVishay
HK$4.83
Each (On a Reel of 1500)
units
Infrared, Visible Light 940nm - Surface Mount 4 - Si 430nm 1100nm - 4.2mm 5mm 1.08mm -
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. 654-8233
Mfr. Part No.KOM 2125-Z
HK$38.09
Each
units
Infrared, Visible Light 850nm DIP Surface Mount 3 - Si 400nm 1100nm - 8.5mm 4.5mm 1.2mm -
RS Stock No. 170-9639
Mfr. Part No.BP 104 FASR-Z
HK$3.529
Each (On a Reel of 1500)
units
- 880nm - Surface Mount 2 - Si - 880nm 0.02µs 4.5mm 4mm 1.2mm -
RS Stock No. 848-6266
Mfr. Part No.FCI-InGaAs-120L-FC
HK$586.06
Each
units
- 1550nm Pigtail Through Hole 3 - InGaAs 900nm 1700nm - - - 19.2mm -
RS Stock No. 165-3018
Mfr. Part No.VBPW34FASR
BrandVishay
HK$2.789
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. 773-3984
Mfr. Part No.BPV23NF
BrandVishay
HK$8.51
Each (In a Bag of 2)
units
Infrared 940nm - Through Hole 2 - Si 790nm 1050nm - - - - -
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. 176-4206
Mfr. Part No.SFH 2711
HK$3.371
Each (In a Pack of 20)
units
Infrared 750nm Chip LED Surface Mount 2 - Si 470nm 670nm 0.06µs 2mm 1.25mm 0.8mm -
RS Stock No. 185-9603
Mfr. Part No.MICROFC-10010-SMT-TR1
HK$482.44
Each
units
UV, Visible Light - SMT Surface Mount 4 - Si 300nm 950nm - 1.5mm 1.8mm 0.65mm -
RS Stock No. 185-9635
Mfr. Part No.MICRORB-10035-MLP-TR1
HK$482.44
Each
units
- - MLP Surface Mount 4 - Si 300nm 1050nm - 1.5mm 1.5mm 0.65mm -
RS Stock No. 818-4415
Mfr. Part No.VEMD10940F
BrandVishay
HK$0.848
Each (In a Pack of 100)
units
Infrared 920nm - Surface Mount 2 - Si 830nm 950nm - 3mm 2mm 1mm -
RS Stock No. 177-5573
Mfr. Part No.UV-035EQ
HK$472.082
Each (In a Tray of 5)
units
Ultraviolet 720nm TO-8 Through Hole 2 - Si - - - - - 5.21mm -
RS Stock No. 184-6980
Mfr. Part No.1540051EA3590
HK$2.649
Each (In a Bag of 500)
units
- 940nm 5 Through Hole 2 - Si 400nm 1100nm - 5mm 5mm 8.7mm -
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. 124-7158
Mfr. Part No.S5971
HK$60.30
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole 3 - Si 320nm 1060nm - - - 3.6mm -
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 -
RS Stock No. 848-6279
Mfr. Part No.PIN-SPOT-9DMI
HK$1,382.08
Each
units
- 970nm Low Profile Through Hole 3 - Si 350nm 1100nm - - - 5mm -
RS Stock No. 124-7161
Mfr. Part No.S1223
HK$89.99
Each
units
Infrared, Visible Light 960nm TO-5 Through Hole 2 - Si 320nm 1100nm - - - 4.1mm -
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