Photo-Resistor Sensor (LDR 3MM)
3.00 EGP
This 3mm Light Dependent Resistor (LDR) is a compact and reliable light sensor that changes its resistance based on the light intensity falling on it. It’s ideal for light-sensing applications such as automatic lighting, solar garden lights, and DIY Arduino projects.
Description
🔹 Features & Benefits:
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✅ Compact 3mm Size – Perfect for small electronic designs and tight spaces.
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✅ Light-Sensitive Resistance – Resistance decreases as light intensity increases.
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✅ Low Power Consumption – Ideal for energy-efficient designs.
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✅ Versatile Applications – Suitable for both analog and digital circuits.
📐 Specifications:
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Type: Photoresistor (LDR)
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Size: 3mm diameter
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Spectral Peak: ~540nm (visible light)
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Resistance Range:
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Dark Resistance: ~1MΩ
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Light Resistance: ~10-20kΩ (depending on light intensity)
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Response Time: Rise ~10ms, Fall ~30ms
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Operating Voltage: Up to 150V (DC)
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Power Dissipation: 100mW max
📦 Applications:
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Light detection circuits
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Automatic night lamps and solar lights
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Light-activated alarms and counters
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Arduino and microcontroller projects
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Robotics and smart systems
This 3mm photoresistor is an essential component for hobbyists, students, and professionals creating light-sensing circuits and automation systems.


















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