A semiconductor device that converts light into electrical current, used for light detection in industrial imaging systems.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Active Area | 0.1-100 mm² | |
| Dark Current | 1-100 nA | |
| Responsivity | 0.5-0.7 A/W | |
| Response Time | 1-100 ns | |
| Spectral Range | 400-1100 nm (Si) | |
| Operating Voltage | 5-100 V reverse bias | |
| Temperature Range | -40°C to +85°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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Photodiodes generate current proportional to light intensity with faster response times but lower sensitivity, while phototransistors provide current amplification but slower response. Photodiodes are preferred for high-speed imaging applications.
Temperature increases dark current (approximately doubling every 10°C rise) and can shift spectral response. Industrial photodiodes often include temperature compensation circuits or cooling for stable operation.
Regular cleaning of optical surfaces, periodic calibration against known light sources, and monitoring of dark current drift. Most industrial photodiodes are sealed units requiring no internal maintenance.
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