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Photoresistor Light Sensitive 20mm LDR Sensor

(0 Reviews)
In stock

Category: Others Sensors

SKU: 1708


MRP Price:
₹99 52% OFF
Discounted Price:
₹48 (Incl.GST)

Quantity:
(20 available)

Weight:
10 g

Total Price:
Bulk Order
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DSMElectro Solutions Private Limited
(1249 customer reviews)

Description:

  • A 20mm LDR sensor is a light-sensitive resistor with a 20mm diameter.   
  • It's made of semiconductor material that exhibits photoconductivity, meaning its electrical resistance decreases as the intensity of light increases.   
  • These sensors are commonly used to detect the presence or intensity of light.   

Key Features:

  • Light Sensitivity: Highly sensitive to visible light.   
  • Variable Resistance: Resistance changes inversely with light intensity.   
  • Compact Size: The 20mm size is suitable for various applications.   
  • Reliability: Generally reliable and long-lasting.   
  • Fast Response: Responds relatively quickly to changes in light.
  • Good Spectral Response: Their spectral response is close to the human eye.  

Applications:

  • Automatic Lighting Control: Streetlights, porch lights, and indoor lighting that turn on/off based on ambient light.   
  • Camera Exposure Control: Used in cameras to adjust exposure settings.
  • Security Systems: Light-based alarms and detectors.   
  • Light Meters: Measuring light intensity.   
  • Toys and Games: Light-activated toys and games.
  • Industrial Automation: Light sensing in production lines.
  • Automotive applications: Automated rear view mirrors, and headlight dimmers.   

Specifications (General):

  • Diameter: 20mm   
  • Maximum Voltage: Typically up to 500 VDC.   
  • Maximum Power: Typically up to 500 mW.   
  • Spectral Peak: Around 560nm (close to visible light).
  • Light Resistance: Varies significantly, often in the range of a few kOhms to tens of kOhms in bright light.
  • Dark Resistance: Very high, often in the mega-ohm range in darkness.   
  • Response Time: Typically in the order of milliseconds.
  • Operating Temperature: varies, but often in the range of -30 to +70 degrees Celcius.

DATA SHEET AND USECASE

Datasheet Overview:

The NTE Electronics LDR Series includes 20mm radial lead type photoresistors. Key specifications are:

  • Resistance in Darkness: Approximately 1 MΩ
  • Resistance at 10 lux: Approximately 9 kΩ
  • Resistance at 1000 lux: Approximately 400 Ω
  • Spectral Peak: 560 nm
  • Maximum Voltage: 500 VDC
  • Maximum Power Dissipation: 500 mW
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