LDR 12mm
The 12mm LDR (Light Dependent Resistor) is a photoresistive sensor that changes its resistance according to the intensity of light falling on its surface. It offers high sensitivity, low power consumption, and reliable performance for light detection and automatic control applications. With a 12mm sensing surface, a dark resistance of 2MΩ, and a light resistance of 10–20KΩ at 10 Lux, it provides accurate light-level monitoring. Operating over a wide temperature range from -30°C to +70°C, this LDR is ideal for automatic lighting systems, security devices, light meters, and various electronic control projects.
يُعتبر حساس الضوء LDR بقطر 12 مم مقاومة ضوئية تتغير قيمتها تبعًا لشدة الضوء الساقط عليها، مما يجعله مناسبًا لتطبيقات استشعار الضوء والتحكم التلقائي. يتميز بحساسية عالية واستهلاك منخفض للطاقة وأداء موثوق في مختلف الظروف. تبلغ مقاومته في الظلام 2 ميجا أوم بينما تتراوح مقاومته بين 10 و20 كيلو أوم عند شدة إضاءة 10 لوكس. يعمل ضمن نطاق درجات حرارة واسع من -30°C إلى +70°C، مما يجعله مناسبًا لأنظمة الإضاءة التلقائية وأجهزة الإنذار وعدادات الضوء والمشاريع التعليمية والإلكترونية المختلفة التي تعتمد على استشعار شدة الإضاءة.
The 12mm Light Dependent Resistor (LDR) is a photoresistor designed to detect changes in ambient light intensity by varying its resistance. As light levels increase, the resistance decreases, making it a simple and effective solution for light-sensing applications. Featuring a spectral peak response of 560nm, it closely matches the visible light spectrum, providing reliable performance in automation, measurement, and control systems. Its compact design, low power consumption, and fast response time make it suitable for both educational and professional electronic projects.
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Light Dependent Resistor (LDR) |
| Sensor Diameter | 12 mm |
| Dimensions | 12 × 10.3 × 2 mm |
| Pin Pitch | 8.55 mm |
| Maximum Voltage | 250V DC |
| Maximum Power Consumption | 200 mW |
| Operating Temperature | -30°C to +70°C |
| Spectral Peak Response | 560 nm |
| Resistance at 10 Lux | 10 – 20 KΩ |
| Dark Resistance | 2 MΩ |
| Response Time (Rise) | 30 ms |
| Response Time (Fall) | 30 ms |
| Sensitivity Ratio (λ100/λ10) | 0.6 |
Applications
- Automatic street lighting systems
- Day and night detection circuits
- Light intensity measurement devices
- Smart home automation projects
- Solar garden lights
- Security and alarm systems
- Display brightness control
- Camera light sensing circuits
- Educational electronics projects
- Arduino and microcontroller applications
- Industrial light monitoring systems
- Energy-saving lighting controls