The QCK3 is a slotted optical switch designed for surface mount applications where extreme temperatures are experienced during solder reflow. The switch consists of a GaAs LED and a silicon photodarlington facing each other across a .157-inch (4.0 mm) gap. The leads are formed to sit flush on a PCB during solder reflow.

• Unique single piece housing designed to reduce cost
• High temperature housing material to withstand extreme temperature
• Shipped in plastic tubes for protection of leads and to feed automatic placement equipment
• Sensor package is infrared transparent and tinted to attenuate visible light