5mm LDR

The 5mm LDR (Light Dependent Resistor) is a photoresistor whose resistance changes according to the intensity of incident light. In bright light, its resistance decreases, while in darkness, the resistance increases significantly. It is widely used in automatic lighting systems, light detection circuits, Arduino projects, robotics, solar garden lights, and DIY electronics.

Features

• Full Name: 5mm Light Dependent Resistor (LDR)
• 5mm photosensitive sensing surface
• Resistance varies with light intensity
• Fast response to changing light conditions
• Low power consumption
• Through-hole mounting
• Long operational life
• Easy integration with microcontrollers

Specifications

Note: The resistance decreases as the light intensity increases and increases when the surrounding light level decreases.

Pin Configuration

Note: The LDR is a non-polarized component, so either terminal can be connected to positive or negative in the circuit.

Applications

• Automatic street lights
• Day and night detection
• Automatic garden lighting
• Arduino projects
• ESP32 and Raspberry Pi projects
• Camera light meters
• Light intensity measurement
• Robotics
• DIY electronics projects

Advantages

• Simple to use
• Low cost
• Low power consumption
• Fast response
• Long service life
• Compact size
• Suitable for analog light sensing

Size

Package Includes

• 1 × 5mm LDR (Light Dependent Resistor)

Note: The 5mm LDR is designed for general light detection and is not intended for precise lux measurement. For best performance, use it in a voltage divider circuit with a suitable resistor. Avoid prolonged exposure to excessive heat or moisture to ensure stable and reliable operation.