HAMAMATSU L1939-04, L1939 Datasheet

LED

Infrared LED

L1939 series

φ300 µm emission spot, no electrode in emission area

Features

l

Small emission spot: φ300 µm

l

Wide directivity

l

High reliability, long life

■

Absolute maximum ratings (Ta=25 °C)

Parameter Symbol Condition Value Unit

Forward current I
Reverse voltage V

Pulse forward current I

Operating temperature

Storage temperature Tstg -40 to +100 *

* L1939 is guaranteed to resist temperature cycle test of up to 5 cycles.

F

R

Pulse width=10 µs

FP

Duty ratio=1 %

Topr -30 to +85

Applications

l

Auto-focus

l

Optical switches

l

Mark sensors

100 mA

5 V

1.5 A

C

°

C

°

Electrical and optical characteristics (Ta=25 °C)

■

Parameter Symbol Condition

Peak emission
wavelength

Spectral half width
Forward voltage VFIF=50 mA - 1.4 1.5 - 1.4 1.5 V
Pulse forward voltage V
Reverse current I
Radiant flux
Radiant illuminance PEIF=50 mA - 0.4 - - 0.35 - mW/cm
Rise time tr IF=50 mA, 10 to 90 % - 0.45 0.7 - 0.45 0.7 µs
Fall time tf IF=50 mA, 90 to 10 % - 0.45 0.7 - 0.45 0.7 µs

λ

∆λ

φ

=50 mA 870 890 920 870 890 920 nm

I

F

p

IF=50 mA - 50 - - 50 - nm

=1.5 A - 2.7 3.4 - 2.7 3.4 V

FPIF

VR=5 V - - 5 - - 5 µA

R

IF=50 mA 8.0 10.0 - 2.0 2.8 - mW

e

Min. Typ. Max. Min. Typ. Max.

L1939 L1939-04

Unit

2

Infrared LED

5.4 ± 0.2

4.7 ± 0.1

GLASS WINDOW

3.0 ± 0.1

3.6 ± 0.2

13.5

2.54 ± 0.2

COMMON TO CASE

0.45
LEAD

L1939 series

■ Emission spectrum

100

80

60

40

20

RELATIVE RADIANT OUTPUT (%)

0

700 800 900 1000

WAVELENGTH (nm)

■ Directivity

10˚0˚10˚

20˚

30˚

40˚

50˚

60˚

70˚

80˚

90˚

RELATIVE RADIANT OUTPUT (%)

Except for reflection ingredient of the base.

L1939

020406080100 20 40 60 80 100

(Typ. Ta=25 ˚C, IF=50 mA)

(Typ. Ta=25 ˚C)

20˚

30˚

40˚

50˚

L1939-04

KLEDB0201EA

60˚

70˚

80˚

90˚

KLEDB0148EA

■ Radiant flux vs. forward current

1000

100

10

RADIANT FLUX (mW)

1

(Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)

L1939

L1939-04

101

FORWARD CURRENT (mA)

1000100 10000

■ Radiant output vs. ambient

temperature

+3

+2

+1

0

-1

-2

-3

-4

RELATIVE RADIANT OUTPUT (dB)

-5

-40 -20 0 20 40 60 80 100

AMBIENT TEMPERATURE (˚C)

(Typ. IF=50 mA)

■ Forward current vs. forward voltage

(Typ. Ta=25 ˚C, tw=100 µs, 0.1 %)

2.0 2.5 3.0

1.51.0

FORWARD VOLTAGE

KLEDB0146EA

10000

(mA)

1000

100

FORWARD CURRENT

10

■ Allowable forward current vs.

ambient temperature

100

80

60

40

20

RELATIVE ALLOWABLE FORWARD CURRENT (%)

0

KLEDB0145EA

-40 -20 0 20

AMBIENT TEMPERATURE (˚C)

40 60 80 100

(V)

KLEDB0147EA

(Typ.)

KLEDB0027EB

■

■ Allowable forward current

Dimensional outlines (unit: mm)

vs. duty ratio

10

(Typ. Ta=25 ˚C)

➀ L1939

5.4 ± 0.1

PULSE WIDTH=1 µs

1

PULSE WIDTH=10 µs

PULSE WIDTH=100 µs

0.1

ALLOWABLE FORWARD CURRENT (A)

0.01

0.01 0.1 1 10 100

DUTY RATIO (%)

CLEAR EPOXY RESIN

KLEDB0149EA

0.45
LEAD

4.2 ± 0.1

2.54 ± 0.2

2.3 ± 0.3

13.5

1.12 ± 0.1

COMMON TO CASE

KLEDA0009ED

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.

HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: [phone], Fax: [phone], 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: [phone], Fax: [phone]
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: [phone], Fax: [phone]
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: [phone], Fax: [phone]
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

➁ L1939-04

KLEDA0053EB

Cat. No. KLED1023E01
Apr. 2001 DN