HAMAMATSU PHOTONICS K.K., Solid State Division

1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com

U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218

Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658

France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10

United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777

North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01

Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741

Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.

Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2001 Hamamatsu Photonics K.K.

Infrared LED

L2791 series

Cat. No. KLED1021E01

Apr. 2001 DN

CLEAR EPOXY RESIN

0.45

LEAD

2.54 ± 0.2

COMMON TO CASE

4.65 ± 0.1

5.4 ± 0.2

2.54 ± 0.2

COMMON TO CASE

0.45

LEAD

700

800

900

1000

0

40

20

60

80

100

WAVELENGTH (nm)

1.0

1.5

2.0

2.5

3.0

3.5

1

10

1000

100

FORWARD VOLTAGE (V)

(Typ. Ta=25 ˚C, tw=100 µs, 1 %)

FORWARD CURRENT (mA)

(Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)

10

1

0.1

1

100

10

100

1000

L2791-03

L2791, L2791-02

90˚

80˚

70˚

60˚

50˚

40˚

30˚

90˚

80˚

70˚

60˚

50˚

40˚

30˚

20˚

10˚ 0˚ 10˚

20˚

0

20

40

60

80

100

20

40

60

80

100

RELATIVE RADIANT OUTPUT (%)

(Typ. Ta=25 ˚C)

L2791

L2791-03 *

L2791-02

-40

-20

0

20

40

60

80

100

-3

-2

0

-1

+1

AMBIENT TEMPERATURE (˚C)

-40

-20

0

20

(Typ.)

40

60

80

100

0

40

60

80

100

AMBIENT TEMPERATURE (˚C)

20

5.4 ± 0.2

4.7 ± 0.1

GLASS WINDOW

3.0 ± 0.1

2.54 ± 0.2

COMMON TO CASE

0.45

LEAD

KLEDB0158EA

KLEDB0160EA

KLEDB0161EA

KLEDA0058EA

s Emission spectrum

s Directivity

s Radiant flux vs. forward current

s Radiant output vs. ambient

temperature

s Forward current vs. forward voltage

KLEDB0162EA

KLEDB0159EA

KLEDA0059EA

s

s

s

s

s Dimensional outlines (unit: mm)

s Allowable forward current vs.

ambient temperature

KLEDB0027EB

KLEDA0060EA

➂ L2791-03

➁ L2791-02

➀ L2791

2