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