Photo Resistor Sensor LDR 5mm GL5549 80kΩ~150kΩ P=3.4mm

GL5549 Photoresistor (LDR) – High Sensitivity Light Dependent Resistor Sensor

Detailed Description:
The GL5549 Photoresistor (Light Dependent Resistor – LDR) is a highly sensitive, compact, and reliable light sensor designed for a wide range of applications in electronics, automation, and light-detection systems. Encapsulated in durable epoxy resin, it provides excellent stability, fast response time (30ms), and good spectral characteristics, making it suitable for both ambient light detection and dynamic light-sensing tasks.

This LDR sensor has a spectral peak at 540nm, closely aligned with the human eye’s sensitivity range. It features a light resistance of 80–150KΩ at 10 Lux and a dark resistance up to 20MΩ, offering precise detection in changing light conditions. With a maximum voltage of 150VDC and power dissipation up to 90mW, the GL5549 is ideal for analog light detection circuits, automatic lighting, solar garden lights, and light-sensitive switches.

Key Features:

• High Sensitivity – Detects subtle light level changes

• Fast Response Time (30ms) – Reacts quickly to lighting shifts

• Epoxy Resin Encapsulation – Offers durability and moisture protection

• Small Size – Easy to integrate in compact circuits

• Stable Performance – Consistent response over time and temperature

• Spectral Peak at 540nm – Optimized for visible light sensing

Applications:

• Light-sensitive switching systems

• Ambient light sensors

• Solar-powered garden lights

• Automatic brightness control

• Smart lighting and electronics projects

Specifications:

• Model: GL5549

• Max Voltage (Vmax): 150V DC

• Max Power Dissipation (Pmax): 90mW

• Ambient Temperature Range: -30℃ to +70℃

• Spectral Peak Wavelength: 540nm

• Light Resistance (at 10 Lux): 80–150KΩ

• Dark Resistance: ≥ 20MΩ

• Gamma Value (100-10 Lux): 0.8 ± 0.1

• Response Time: 30ms

• Package Type: Epoxy-coated