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LDR (Light Dependent Resistor) Photoresistor 12mm

SKU: JDWCMOUMF9
The 12mm LDR (Light Dependent Resistor), also known as a photoresistor, is a light-sensitive electronic component whose resistance changes according to the intensity of light falling on its surface. As the light level increases, the resistance decreases, and as the light level decreases, the resistance increases. This 12mm photoresistor is widely used in automatic lighting systems, light detection circuits, solar...
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Specifications

Specifications:

Product Type: Light Dependent Resistor (LDR)
Sensor Type: Photoresistor
Diameter: 12mm
Mounting Type: Through-Hole
Spectral Peak Wavelength: Approximately 540nm
Light Resistance (10 Lux): 10KΩ – 20KΩ Typical
Dark Resistance: 0.5MΩ – 2MΩ Typical
Maximum Voltage: 150V DC
Maximum Power Dissipation: 100mW
Response Time:
Rise Time: ≤ 30ms
Fall Time: ≤ 30ms
Operating Temperature: -30°C to +70°C
Lead Length: Approximately 20mm – 30mm
Terminal Type: Radial Leads
Body Material: Epoxy Resin Encapsulation
Weight: Approximately 1g

Additional Resources

Photoresistor.PDF

FAQ

1. What is an LDR used for?

An LDR is used to detect light intensity and is commonly found in automatic lighting systems, light sensors, solar lights, and brightness-controlled electronic devices.

2. How does an LDR work?

The resistance of an LDR decreases when exposed to light and increases when the surrounding environment becomes darker.

3. Can the 12mm LDR be used with Arduino and ESP32?

Yes, the LDR can be easily interfaced with Arduino, ESP32, STM32, Raspberry Pi Pico, and other microcontrollers using a voltage divider circuit.

4. What is the resistance of the LDR in darkness?

The dark resistance is typically between 0.5MΩ and 2MΩ, depending on the sensor model and environmental conditions.

5. What are the advantages of using an LDR?

LDRs are inexpensive, easy to use, highly sensitive to light, consume very little power, and are suitable for a wide range of light-sensing and automation applications.

View full product details

The 12mm LDR (Light Dependent Resistor), also known as a photoresistor, is a light-sensitive electronic component whose resistance changes according to the intensity of light falling on its surface. As the light level increases, the resistance decreases, and as the light level decreases, the resistance increases.

This 12mm photoresistor is widely used in automatic lighting systems, light detection circuits, solar garden lights, camera light meters, brightness sensing applications, and various Arduino and microcontroller projects. Due to its simple operation and low cost, it is one of the most commonly used sensors for detecting ambient light levels.

The sensor can be easily interfaced with Arduino, ESP32, STM32, Raspberry Pi Pico, and other microcontrollers using a simple voltage divider circuit, making it ideal for educational, hobbyist, and industrial applications.

Key Features

  • Light-sensitive resistor (Photoresistor)
  • 12mm photosensitive surface
  • Resistance varies with light intensity
  • High sensitivity to visible light
  • Simple analog output operation
  • Low power consumption
  • Fast response to light changes
  • Compact through-hole design
  • Easy interfacing with microcontrollers
  • Wide operating temperature range
  • Long operational lifespan
  • Cost-effective light sensing solution
  • Suitable for indoor and outdoor applications
  • Ideal for automation and sensing projects