The NORPS-12 is a light dependent resistor with sensitivity in the visible light region. The CdS photoresistor photocell is mounted on a 2-pin ceramic encapsulated in a moisture-resistant coating and enclosed in a plastic casing.

Advanced Photonix’s CdS Photocells are photoresistor cells for visible light measurement designed to sense light from 400 to 700 nm. Their resistance decreases as the light level increases with efficiency characteristics similar to the human eye. These Light Dependent Resistors (LDR) are available in a wide range of resistance values. They are available in a two leaded plastic-coated ceramic header or hermetically sealed TO metal can.

Absolute Maximum Ratings:

• Voltage VR - 250 V
• Power Dissipation - - 250 mW
• Operating Temperature: -60 +75 ºC
• Storage Temperature: -60 +75 ºC
• Package: Plastic Casing
• Light Resistance minimum: 5.4 KΩ
• Light Resistance maximum: 12.6 KΩ
• Dark Resistance 15 sec after removal of test light RD 1 MΩ
• Spectral Peak - λP - 550 - nm