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Datasheet: L2791-02 (Hamamatsu Corporation)

Small emission spot LED using current confined chip

 

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Hamamatsu Corporation
Features
l Small emission spot
L2791 :
400 m
L2791-03:
160 m
l Uniform emission: L2791/-02
l Narrow directivity: L2791/-02
Applications
l Automatic control systems
l Optical switches
l Auto-focus
L E D
Infrared LED
Small emission spot LED using current confined chip
L2791 series
L2791 is infrared LED with a microball lens cemented to the current confined chip surface. This combination ensures high directivity and improved
emission uniformity. In particular, L2791-02 uses a lens cap that delivers even narrower directivity. As a variant type not using a microball lens,
L2791-03 is also available with the LED chip potted with resin, which gives a small emission spot of
160 m.
s Absolute maximum ratings (Ta=25
C)
Parameter
Symbol
Condition
Value
Unit
Forward current
I
F
80
mA
Reverse voltage
V
R
3
V
Pulse forward current
I
FP
Pulse width=10 s
Duty ratio=1 %
0.5
A
O p era ting te m pe ratu re
Topr
-30 to +85
C
Storage temperature
Tstg
-40 to +100 *
C
* L2791-03 is guaranteed to resist temperature cycle test of up to 5 cycles.
s Electrical and optical characteristics (Ta=25
C)
L2791
L2791-02
L2791-03
Parameter
Symbol
Condition
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
Peak emission
wavelength
p
I
F
=50 mA
850
880
910
850
880
910
850
880
910
nm
Spectral half width
I
F
=50 mA
-
60
-
-
60
-
-
60
-
nm
Forward voltage
V
F
I
F
=50 mA
-
1.5
1.7
-
1.5
1.7
-
1.5
1.7
V
Pulse forward voltage
V
FP
I
F
=0.5 A
-
3.2
4.0
-
3.2
4.0
-
3.2
4.0
V
Reverse current
I
R
V
R
=3 V
-
-
10
-
-
10
-
-
10
A
Radiant flux
e
I
F
=50 mA
1.6
2.0
-
1.6
2.0
-
4.0
5.0
-
mW
Radiant illuminance
P
E
I
F
=50 mA
-
1.3
-
-
2.0
-
-
-
-
mW/c m
2
Rise time
tr
I
F
=50 mA, 10 to 90 %
-
0.12
0.2
-
0.12
0.2
-
0.12
0.2
s
Fall time
tf
I
F
=50 mA, 90 to 10 %
-
0.12
0.2
-
0.12
0.2
-
0.12
0.2
s
1
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: Smidesvgen 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
1.12 0.1
CLEAR EPOXY RESIN
5.4 0.1
4.2 0.1
0.45
LEAD
2.54 0.2
2.3 0.3
13.5
COMMON TO CASE
4.65 0.1
4.5 0.2
6.65 0.2
13.5
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)
RELATIVE RADIANT OUTPUT (%)
(Typ. Ta=25 C, I
F
=50 mA)
1.0
1.5
2.0
2.5
3.0
3.5
1
10
1000
100
FORWARD VOLTAGE (V)
FORWARD CURRENT (mA)
(Typ. Ta=25 C, tw=100 s, 1 %)
FORWARD CURRENT (mA)
(Typ. Ta=25 C, tw=100 s, 0.1 %)
RADIANT FLUX (mW)
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
* L2791-03: Except for reflection ingredient of the base.
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)
RELATIVE RADIANT OUTPUT (dB)
(Typ. I
F
=50 mA)
-40
-20
0
20
(Typ.)
40
60
80
100
0
40
60
80
100
AMBIENT TEMPERATURE (C)
RELATIVE ALLOWABLE FORWARD CURRENT (%)
20
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
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
L2791-03
L2791-02
L2791
2
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