Senba D57 5mm LDR Light Sensor with Metal Casing
The Senba D57 is a 5mm light-dependent resistor (LDR) housed in a durable metal casing, featuring a 2-pin radial lead configuration. Its resistance varies inversely with light intensity, making it a fundamental component for light-sensing circuits in Arduino, Raspberry Pi, and other microcontroller-based projects requiring ambient light detection or automatic lighting control.
Features
- 5mm diameter cadmium sulfide (CdS) photoconductive cell in a robust metal housing.
- Wide resistance range from ~1 kΩ (bright light) to ~20 MΩ (darkness) for versatile light-level detection.
- Two-pin radial lead design for easy through-hole PCB mounting or breadboard prototyping.
- Durable metal casing provides mechanical protection and shields the semiconductor element.
- Core component for building light-activated switches, dusk-to-dawn controllers, and exposure meters.
Out of stock
The Senba D57 Light-Dependent Resistor (LDR) operates on the principle of photoconductivity, where incident photons increase the charge carriers in its cadmium sulfide (CdS) semiconductor material, thereby lowering its electrical resistance. This inverse logarithmic relationship between light intensity (illuminance) and resistance allows it to function as a simple, analog light sensor.
Housed in a compact 5mm metal can, the sensor offers improved durability and thermal stability compared to plastic-bodied variants. The 2-pin leads provide a straightforward interface for voltage divider circuits, which can be read by an analog-to-digital converter (ADC) on microcontrollers like Arduino, ESP32, or STM32 to quantify ambient light levels for automated control systems.
Additional Information
| Weight | 0.01 kg |
|---|---|
| Dimensions | 6 × 3 × 1 cm |
