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LDR (Light Dependent Resistor) Photoresistor 5mm

SKU: DY205DMEG6
The 5mm LDR (Light Dependent Resistor), also known as a photoresistor, is a compact light-sensitive component that changes its resistance based on the intensity of light falling on its surface. When exposed to bright light, its resistance decreases significantly, while in darkness, the resistance increases to a very high value. Featuring a compact 5mm photosensitive surface, this LDR is ideal...
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Specifications

Specifications:

Product Type: Light Dependent Resistor (LDR)
Sensor Type: Photoresistor
Diameter: 5mm
Mounting Type: Through-Hole
Spectral Peak Wavelength: Approximately 540nm
Light Resistance (10 Lux): 10KΩ – 30KΩ Typical
Dark Resistance: 0.5MΩ – 5MΩ 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: Less than 1g

Additional Resources

Photoresistor.PDF

FAQ

1. What is the 5mm LDR Photoresistor used for?

The 5mm LDR is used for detecting ambient light levels in applications such as automatic lighting systems, smart home devices, solar lights, and light-controlled circuits.

2. How does a Light Dependent Resistor work?

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

3. Can the 5mm LDR be connected to Arduino and ESP32 boards?

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

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

The dark resistance is typically between 0.5MΩ and 5MΩ, depending on the specific device and environmental conditions.

5. Why choose a 5mm LDR over larger LDRs?

The 5mm LDR offers a compact size, making it ideal for small electronic projects and space-constrained applications while still providing reliable light detection performance.

View full product details

The 5mm LDR (Light Dependent Resistor), also known as a photoresistor, is a compact light-sensitive component that changes its resistance based on the intensity of light falling on its surface. When exposed to bright light, its resistance decreases significantly, while in darkness, the resistance increases to a very high value.

Featuring a compact 5mm photosensitive surface, this LDR is ideal for space-constrained electronic designs and is widely used in automatic lighting systems, light detection circuits, smart home devices, solar-powered projects, and educational electronics. Its simple operation and low cost make it one of the most commonly used light sensors in analog electronics.

The 5mm photoresistor can be easily interfaced with Arduino, ESP32, STM32, Raspberry Pi Pico, and other microcontrollers using a voltage divider circuit, allowing accurate ambient light monitoring and automation control.

Key Features

  • Compact 5mm light-sensitive resistor
  • Resistance varies with light intensity
  • High sensitivity to visible light
  • Simple analog output operation
  • Low power consumption
  • Fast response to changing light levels
  • Through-hole mounting design
  • Easy microcontroller interfacing
  • Compact size for small projects
  • Stable and reliable performance
  • Long operational life
  • Cost-effective sensing solution
  • Suitable for indoor and outdoor applications
  • Ideal for automation and monitoring projects