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Description:

Slotted optical switches in the OPB852, and OPB853 series consist of an infrared emitting diode and a NPN silicon phototransistor or photodarlington, mounted on opposite sides of a 0.125” (3.175 mm) wide slot. The OPB852A, OPB852B and OPB852C have phototransistor output, while the OPB853A, OPB853B and OPB853C have photodarlington output.

On each of these devices, the emitter has a molded-in aperture of 0.050” x 0.050” (1.270 mm x 1.270 mm) and the phototransistor (OPB852) or photodarlington (OPB853) has a molded-in aperture of 0.010” x 0.050” (0.254 mm x 1.270 mm).

Phototransistor or photodarlington switching occurs when an opaque object passes through the slot.

Features:

? Inexpensive opaque plastic housing

? Choice of transistor (OPB852) or photodarlington (OPB853) output

? 0.125” (3.18 mm) slot width

? 0.290” (7.37 mm) lead spacing

? Apertured for high resolution

Applications:

? Non-contact interruptive object sensing

? Assembly line automation

? Machine automation

? Equipment security

? Machine safety