DESCRIPTION
The QCK3/QCK4 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" (4.0 mm) gap. The leads are formed to sit flush on a PCB during solder reflow.

FEATURES
■ Unique single piece housing designed to reduce cost.
■ High temperature housing material to withstand extreme temperature.
■ High current transfer ratios (CTR) for low drive current at 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.