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 1 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.

Description:

Each OPB820 and OPB821 device consists of an infrared emitting diode (LED, 890 nm center wavelength) and a

NPN silicon phototransistor mounted in a low-cost black plastic housing on opposite sides of an 0.080” (2.03 mm)

wide slot. Each device in this series has a 0.040” (1.02 mm) wide aperture located in front of the infrared diode.

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

Devices are offered with 0.275” (6.96 mm) lead spacing for PCBoard mounting (OPB820) or 24” (610 mm) 26

AWG wire leads (OPB821).

Custom electrical, wire and cabling and connectors are available. Contact your local representative or OPTEK for

more information.

Features:

Product Photo Here

RoHS

OPB821

Applications:

Ordering Information

Part

Number

LED Peak

Wavelength

Sensor

Slot Width /

Depth

Aperture

Emitter/Sensor

Lead Length /

Spacing

OPB820

890 nm

Transistor

0.080" /

0.255”

0.04"/ 0.04"

0.425" / 0.275"

OPB820S10

0.04"/ 0.01"

OPB820S5

0.04"/ 0.005"

OPB820S3

0.04"/ 0.003"

OPB821Z

0.040"/ 0.040"

24"/26 AWG

Wire

OPB821S10Z

0.040"/ 0.010"

OPB821S5Z

0.040"/ 0.005"

OPB821S3Z

0.040"/ 0.003"

OPB820