Product description
A photoresistor (LDR) is a light-sensitive component based on semiconductor material, where the resistance decreases as light intensity increases. This characteristic makes the component suitable for measuring light levels and for controlling functions depending on ambient lighting.
The resistance typically varies from 0.5 MΩ in darkness to 4–7 kΩ under illumination, enabling simple readout via a voltage divider together with microcontrollers or analog circuits.
Specifications:
- Type: Photoresistor (LDR)
- Package: 5 mm
- Rated voltage (max): 100 VDC
- Power (max): 90 mW
- Resistance at light (10 lux): 4-7 kΩ
- Resistance in darkness: 0.5 MΩ
- Spectral peak sensitivity: 540 nm
- Response time: 30-40 ms
- Temperature range: -30 to +70 °C
