LDR (5mm on board)

The LDR (Light Dependent Resistor) 5mm on board is a small, 5mm diameter photoresistor mounted on a circuit board for easy integration into electronic projects and experiments. Its resistance varies inversely with light intensity, making it useful for light sensing applications.

Key Features

Diameter: 5mm sensing area, compact for versatile mounting.

Light Resistance: Typically around 5-20 kΩ under bright light conditions (~10 lux).

Dark Resistance: High resistance in darkness, usually in the megaohm range (up to 1 MΩ or more), providing sharp response changes with light.

Maximum Voltage: Around 150 VDC, with power dissipation typically about 100 mW.

Spectral Response: Peaks near 540 nm, mimicking the human eye sensitivity to visible light.

Operating Temperature: Generally from -30°C to +70°C.

Package: Through-hole mounting style on board with axial leads for stable connections.

Applications

Commonly used in automatic lighting control systems, street lights, and night lights for ambient light sensing.

Employed in burglar alarms, position sensors, and exposure controls in photographic equipment.

Suitable for teaching experiments related to photoconductivity and sensor circuits.

This 5mm LDR on board offers a compact, sensitive, and reliable solution for light detection and related electronic sensing applications, widely adopted in educational and practical circuits