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. 145-2723
Mfr. Part No.BPW83
BrandVishay
HK$3.169
Each (In a Bag of 1000)
units
Infrared, Visible Light 950nm - Through Hole 2 - Si 790nm 1050nm 100ns 5mm 3mm 6.4mm -
RS Stock No. 177-5565
Mfr. Part No.FCI-INGAAS-120L-FC
HK$698.37
Each (In a Tray of 2)
units
- 1550nm Pigtail Through Hole 3 - InGaAs 900nm 1700nm - - - 19.2mm -
RS Stock No. 183-7181
Mfr. Part No.PIN-10DP
HK$830.66
Each
units
Infrared 970nm BNC Surface Mount 1 - Si 350nm 1100nm - - - 1.03in -
RS Stock No. 146-2108
Mfr. Part No.QSD2030F
HK$1.407
Each (In a Bag of 250)
units
- 880nm - Through Hole 2 - Si 700nm 1100nm - - - 8.77mm -
New
RS Stock No. 188-6471
Mfr. Part No.AFBR-S4N66C013
BrandBroadcom
HK$372.807
Each (In a Tray of 100)
units
Visible Light 420nm CSP Surface Mount 32 - Si 300nm 900nm 56ns 6.14mm 6.14mm 0.3mm -
RS Stock No. 184-1648
Mfr. Part No.PIN-5DPI
HK$153.108
Each (In a Tray of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 183-7118
Mfr. Part No.FCI-InGaAs-3000-20
HK$2,241.496
Each (In a Tray of 10)
units
Infrared 1550nm TO-46, TO-5 Through Hole 2 - InGaAs 1100nm 1620nm - - - 4.7mm -
RS Stock No. 183-7136
Mfr. Part No.PIN-5DP/SB
HK$184.768
Each (In a Tray of 10)
units
Infrared 410nm TO-5 Through Hole 2 - Si 350nm 1100nm - - - 0.18in -
RS Stock No. 708-2816
Mfr. Part No.BPW24R
BrandVishay
HK$30.74
Each
units
Infrared, Visible Light 900nm TO-18 Through Hole 2 - Si 600nm 1050nm - 5.5mm 5.5mm 6.15mm -
RS Stock No. 185-9625
Mfr. Part No.MICROFJ-40035-TSV-TR1
HK$689.20
Each
units
- - TSV Surface Mount 4 - Si 200nm 900nm - 4mm 4mm 0.46mm -
RS Stock No. 699-7604
Mfr. Part No.BPV22NF
BrandVishay
HK$7.238
Each (In a Pack of 5)
units
Infrared 940nm Side Looker Through Hole 2 - Si 790nm 1050nm - 4.5mm 5mm 6mm -
RS Stock No. 183-7143
Mfr. Part No.UV-035DQC
HK$635.57
Each (In a Tray of 10)
units
Ultraviolet 980nm Ceramic Through Hole 2 - Si - - - 0.4in - 0.08in -
RS Stock No. 2508662139
Mfr. Part No.SLD-70BG2A
HK$77.13
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508662319
Mfr. Part No.SLD-68EBG1A
BrandSilonex
HK$115.64
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508662189
Mfr. Part No.SLD-70IR2A
HK$106.68
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508662094
Mfr. Part No.SLD-68HL1A
BrandSilonex
HK$41.44
Each
units
- - - - - - - - - - - - - -
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