OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006

Phone: (972) 323-2200 or (800) 341-4747

FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com

Issue A .3

04/07

Page 2 of 7

Slotted Optical Switch

OPB820, OPB821Z, OPB821S

Z

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Pin #

Description

Pin #

Description

4

Cathode

2

Collector

3

Anode

1

Emitter

Color/Pin #

Description

Color/Pin #

Description

Green-3

Cathode

White-2

Collector

Orange-4

Anode

Blue-1

Emitter

Package Drawing

OPB820

Package Drawing

OPB821

3

1

4

2

CONTAINS POLYSULFONE

To avoid stress cracking, we suggest using

ND Industries’ Vibra-Tite for thread-locking.

Vibra-Tite evaporates fast without causing structural

failure in OPTEK’s molded plastics.

4

1

3

2

DIMENSIONS ARE IN:

INCHES

[ MILLIMETERS]

24 [610]