5mm LDR Sensor – Light Dependent Resistor (30kΩ to 50kΩ) for Light Sensing Applications
The 5mm LDR Sensor is a light-dependent resistor (photoresistor) that changes its resistance based on the ambient light level. With a resistance range of 30kΩ to 50kΩ in low light, this compact and highly sensitive component is ideal for use in light sensing, brightness detection, and automatic lighting control systems. Its small size and fast response make it suitable for both DIY projects and embedded applications.
Whether you’re designing a smart lighting system, a solar tracker, or an energy-saving automation setup, this LDR provides a reliable and cost-effective solution for detecting ambient light levels.
Product Specifications
Feature
Specification
Sensor Type
Photoresistor / Light Dependent Resistor (LDR)
Diameter
5mm
Resistance (Dark)
30kΩ to 50kΩ (approx.)
Resistance (Light)
<10kΩ (approx., under bright light)
Max Voltage
150V DC
Max Power Dissipation
100mW
Operating Temperature
-30°C to +70°C
Response Time
Rise: <20ms, Fall: <30ms
Applications
Light sensors, street lights, solar lighting, security systems, brightness detection
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