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

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

03/08

Page 3 of 7

Infrared Light Emitting Diode

OP180 & OP280 Series

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0

5

10

15

20

25

30

35

40

45

50

-40°C

-20°C

0°C

+20°C

+40°C

+60°C

+80°C

+100°C

Normalized @ +20°C, 20 mA

1

1.05

1.1

1.15

1.2

1.25

1.3

1.35

1.4

0

5

10

15

20

25

30

35

40

45

50

-40°C

-20°C

0°C

+20°C

+40°C

+60°C

+80°C

+100°C

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0

10203040

5060708090

100

-60° C

-40° C

-20° C

0° C

20° C

40° C

60° C

80° C

100° C

120° C

Normalized at 50 mA and 20° C

Temperature

OP280

OP180

Forward Voltage vs Forward Current vs Temperature

1

1.1

1.2

1.3

1.4

1.5

1.6

0

5

10

15

20

25

30

35

40

45

50

Forward Current (mA)

-40°C

-20°C

0°C

+20°C

+40°C

+60°C

+80°C

+100°C

Forward Voltage vs Forward Current

vs Temperature