GL5549 Photoresistor Light Dependent Resistor LDR 5mm 80-150kΩ 2Pcs
The GL5549 Photoresistor Light Dependent Resistor LDR 5mm 80-150kΩ is light-sensitive component designed to change its resistance according to the ambient light level. With a resistance range of 80–150kΩ under 10 lux, it provides reliable performance in detecting and responding to light variations. This LDR features a compact 5mm head size and comes in a 2-piece pack, making it suitable for use in electronic projects, light control circuits, night lights, alarms, and other automatic illumination systems where light sensitivity is required.
Features
- 5mm epoxy-coated round head for compact design.
- Light-dependent resistance with wide sensitivity range.
- Resistance: 80–150kΩ at 10 lux illumination.
- Fast response to changing light levels.
- Reliable performance with long service life.
- Easy to integrate into light control and detection circuits.
- Supplied in a 2-piece pack for convenience.
Dimensions
Specifications
| Parameter | Condition | Value |
| Model | — | GL5549 |
| Datasheet | — | GL5549 |
| Diameter | — | 5mm |
| Light Resistance | @ 10 Lux, 25℃ | 80kΩ – 150kΩ |
| Maximum Voltage | @ 25℃ | 150VDC |
| Power Dissipation | @ 25℃ | 90mW |
| Dark Resistance | @ 0 Lux | 20MΩ |
| Gamma Value | 100 – 10 Lux | 0.8 |
| Response Time | — | 30ms |
| Spectral Response Peak | @ 25℃ | 540nm |
| Ambient Temperature Range | — | -30℃ ~ +70℃ |
Applications
- Automatic lighting control (street lights, garden lights, night lamps).
- Light-sensitive alarms and security systems.
- Display brightness adjustment in electronic devices.
- Solar garden lights and energy-saving systems.
- Camera exposure control and light meters.
- DIY electronics and educational projects.
- Light-following robots and sensor-based automation systems.
Package Contents
- 2 X GL5549 Photoresistor Light Dependent Resistor LDR 5mm 80-150kΩ
elagamytarek (verified owner) –
Amazing Photo Resistor Sensor