LDR Light Dependent Resistor / Sensor (LDR)

What is an LDR (Light Dependent Resistor)? An LDR is a component that has a (variable) resistance that changes with the light intensity that falls upon it. This allows them to be used in light sensing circuits.

Light Dependent Resistors (LDR) are also called photoresistors. They are made of high resistance semiconductor material. When light hits the device, the photons give electrons energy. This makes them jump into the conductive band and thereby conduct electricity.



Diameter 3-20 mm
Application Light dependent resistors, LDRs or photoresistors are often used in circuits where it is necessary
Resistance 50-100K OHW
Max Power 200 W


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