5MM 5506 LDR Photosensitive Resistor LDR Sensor
- Product SKU: KG1047
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Specification
Description
The 5MM 5506 LDR sensor is a high-quality component that adjusts resistance with ambient light and serves effectively as an LDR light detector and an LDR photo resistor for smart lighting control.
As light on the surface increases, resistance decreases—allowing the circuit to detect brightness changes efficiently. Therefore, this makes it ideal for automatic ON/OFF lighting systems and other responsive designs that rely on an LDR sensor.
The LDR 5MM ldr sensor works reliably in both bright and dark conditions. Since it mimics the response of the human eye, it remains consistent across varied environments; in short, higher illumination lowers resistance, improving response of the LDR sensor.
This component uses Cadmium Sulphide (CdS) photo-conductive cells with a spectral response similar to the human eye. As light intensity rises, cell resistance falls, enabling smooth detection and fast reaction in smoke detection, lighting control, batch counting, and burglar alarm systems.
Technical Details of LDR light detector
- Light Resistance: ~2–5 K Ω
- Dark Resistance: ~200 K Ω
- Max Voltage: 150 V
- Max Power: 100 mW
- Spectral Peak: 540 nm
- Model: 5506
Analog Applications with LDR photo resistor
- Camera exposure control
- Auto slide focus – dual cell
- Photocopy machines – toner density measurement
- Colorimetric test equipment
- Densitometer systems
- Electronic scales – dual cell type
- Automatic gain control – modulated light source
- Automated rear-view mirror systems
- Light sensing function
Digital Applications with LDR sensor
- Automatic headlight dimmer
- Nightlight control circuits
- Oil burner flame-out detection
- Streetlight automation systems
- Absence / presence (beam breaker) sensors
- Position detection sensors
Features of LDR light detector
- Accurately senses changes in light intensity
- Easy to mount on a breadboard or perfboard
- Compatible with microcontrollers and analog ICs
- Small, lightweight, inexpensive, and reliable
- Fast response speed with high safety performance
- Environmentally friendly and energy efficient
- Excellent reliability and long operating life
Applications using LDR photo resistor
- Automatic streetlight control and smart lighting
- Camera exposure and brightness control
- Nightlight and home automation systems
- Flame detection and fire alarm triggers
- Position and motion detection sensors
- Light-based security or intrusion alarms
- Interactive electronic toy circuits
- Solar-powered and daylight-driven lighting
- Industrial automation light control systems
- Display brightness auto-adjustment
Specifications
| Model | Max Pressure (VDC) | Max Power (mW) | Ambient Temp (°C) | Spectral Peak (nm) | Bright Resistance (Ω) | Dark Resistance (MΩ) | Response Time (ms) |
|---|---|---|---|---|---|---|---|
| 5506 | 150 | 100 | -30 ~ +70 | 540 | 4–7 KΩ | 0.5 MΩ | Rise: 30 Fall: 30 |
| 5516 | 150 | 100 | -30 ~ +70 | 540 | 5–10 KΩ | 0.5 MΩ | Rise: 30 Fall: 30 |
| 5528 | 150 | 100 | -30 ~ +70 | 540 | 10–20 KΩ | 1 MΩ | Rise: 20 Fall: 30 |
| 5537 | 150 | 100 | -30 ~ +70 | 540 | 20–30 KΩ | 2 MΩ | Rise: 20 Fall: 30 |
| 5549 | 150 | 100 | -30 ~ +70 | 540 | 100–200 KΩ | 10 MΩ | Rise: 20 Fall: 30 |
Drawing (mm) for ldr sensor
Package Includes
- 1 × 5MM 5506 LDR Photosensitive Resistor
