20mm LDR – Light Dependent Resistor Photoresistor

With such a wide variation in resistance, LDRs are easy to use and there are many LDR circuits available.

• Diameter : 20mm
• Number of Pins : 2
• Dark resistance : max. 2kΩ
• Spectral Peak : 560nm
• Light Resistance (10 lux) : 10 – 20 kΩ
• Maximum Voltage : 500VDC
• Maximum Power : 0.5W
• Response Time(μS) : 30

When light falls upon it then the resistance changes. Values of the resistance of the LDR may change over many orders of magnitude the value of the resistance falling as the level of light increases.