10 pcs 5mm Light Dependent Resistor LDR

Description:

The 5mm Light Dependent Resistor LDR is made from a thin layer of Cadmium Sulfide (CdS) deposited on a ceramic substrate. This photosensitive material reacts to photons; as the light intensity hitting the surface increases, the resistance of the component decreases significantly.

This 10-piece pack is ideal for hobbyists, students, and engineers building automated systems. Because it provides analog output, it can be easily integrated with microcontrollers like Arduino, ESP32, or Raspberry Pi using a simple voltage divider circuit. Its spectral response is tuned to peak at roughly 540nm, which closely mimics the sensitivity of the human eye to green-yellow light.

Features:

High Sensitivity: Capable of detecting minute changes in light, from a moonlit room to direct sunlight.

Compact & Durable: Housed in a small 5mm epoxy-coated package that is resistant to moisture and physical wear.

Fast Response Time: Reacts to light changes in as little as 20–30 milliseconds.

Reliable Performance: Proven technology used in millions of streetlights and consumer electronics.

Easy Integration: Standard 2-pin through-hole design fits perfectly into breadboards and prototype PCBs.

Specifications:

Light Resistance (10 Lux): 10 kΩ – 20 kΩ

Dark Resistance (0 Lux): 1 MΩ – 20 MΩ

Max Voltage: 150V DC

Max Wattage: 100mW

Spectral Peak: 540nm (Visible Light)

Response Time: 20ms (Rise) / 30ms (Fall)

Operating Temperature: −30∘C to +70∘C

Mounting Type: DIP / Through-Hole