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.

...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 8,共 8 項產品
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庫存編號 184-7261
製造零件編號1541201EEA400
HK$3.491
/個 (每包:25個)
單位
Infrared 940nm 1206 Surface Mount 2 - Si 700nm 1100nm - 3.2mm 1.6mm 1.1mm -
RS庫存編號 184-7283
製造零件編號1540051EA3590
HK$3.491
/個 (每包:25個)
單位
- 940nm 5 Through Hole 2 - Si 400nm 1100nm - 5mm 5mm 8.7mm -
RS庫存編號 184-6978
製造零件編號1541201EEA400
HK$2.259
個 (在毎卷:3000)
單位
Infrared 940nm 1206 Surface Mount 2 - Si 700nm 1100nm - 3.2mm 1.6mm 1.1mm -
RS庫存編號 184-6979
製造零件編號1541141ECA570
HK$2.259
個 (在毎卷:3000)
單位
Infrared 940nm 1104 Surface Mount 2 - Si 700nm 1100nm - 3mm 1mm 2.02mm -
RS庫存編號 184-6980
製造零件編號1540051EA3590
HK$2.649
個 (以毎袋:500)
單位
- 940nm 5 Through Hole 2 - Si 400nm 1100nm - 5mm 5mm 8.7mm -
RS庫存編號 184-7295
製造零件編號1540051EC3590
HK$3.491
/個 (每包:25個)
單位
Infrared 940nm 5 Through Hole 2 - Si 700nm 1100nm - 5mm 5mm 8.7mm -
RS庫存編號 184-7270
製造零件編號1541141ECA570
HK$3.491
/個 (每包:25個)
單位
Infrared 940nm 1104 Surface Mount 2 - Si 700nm 1100nm - 3mm 1mm 2.02mm -
RS庫存編號 184-6981
製造零件編號1540051EC3590
HK$2.649
個 (以毎袋:500)
單位
Infrared 940nm 5 Through Hole 2 - Si 700nm 1100nm - 5mm 5mm 8.7mm -