LDR 5mm 10LUX Light Dependent 10-20K Resistor sensor

LDR 5mm 10LUX Light Dependent 10-20K Resistor

General Description:

The LDR (Light Dependent Resistor) sensor is a 5mm electronic component, also known as a photoresistor, that changes its resistance based on the amount of light it receives. Its resistance decreases as the intensity of light increases, making it ideal for light sensing and control applications.

Specifications of LDR sensor

1. Size & Shape:
   • Diameter: 5mm
   • Length (Lead included): Typically 8-12mm (can vary by manufacturer)
   • Form Factor: Cylindrical head with two metal leads.
2. Light Sensitivity:
   • Illuminance (LUX): 10 LUX
   • Resistance at 10 LUX: 10kΩ – 20kΩ (This is the resistance range when exposed to 10 LUX of light intensity)
   • Resistance in Darkness: Typically greater than 1MΩ (when exposed to very low light or no light).
3. Operating Conditions:
   • Maximum Power Dissipation: 100mW at 25°C
   • Operating Temperature: -30°C to +70°C
   • Maximum Voltage: 250V DC
4. Spectral Response:
   • Peak Wavelength Sensitivity: 540nm (green light region in the visible spectrum)
   • Wavelength Range: 400nm – 700nm (visible light range)
5. Response Time:
   • Rise Time: Typically 20ms (time to change from dark to light conditions)
   • Decay Time: Typically 30ms (time to change from light to dark conditions)
6. Material:
   • Photosensitive Material: Cadmium Sulfide (CdS)
   • Encapsulation: Epoxy resin
7. Applications:
   • Automatic lighting systems
   • Light level detection
   • Streetlight control
   • Camera light meters
   • Security systems

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