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 .1

01/06

Page 3 of 3

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

Wide Gap Optical Sensor

OPB856Z

Normalized Collector Current vs.

Distance between Emitter and Sensor

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

Distance to Reflective Surface (inches)

5 mA

10 mA

20 mA

30 mA

40 mA

50 mA

Normalized at d = 2.0"

IF = 20mA

VCE = 5V