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| SFH4257 Datasheet, PDF (5/9 Pages) OSRAM GmbH – High Power Infrared Emitter (850 nm) | |||
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SFH 4257
Relative Spectral Emission
Irel = f (λ)
100
%
Irel 80
OHL01714
60
40
20
0
700 750 800 850
nm 950
λ
Forward Current IF = f (VF)
Single pulse, tp = 20 µs
100
A
IF
10-1
5
OHL01713
10-2
5
10-3
5
10-4
0 0.5 1 1.5 2 2.5 V 3
VF
Radiant
Intensity
Ie
Ie 100
mA
=
f
(IF)
Single pulse, tp = 20 µs
101
Ie
I e (100 mA)
OHL01715
100
5
10-1
5
10-2
5
10-3
10
0
5 10 1
5 10 2 mA 10 3
IF
Permissible Pulse Handling
Capability IF = f (Ï), TA = 25 °C,
duty cycle D = parameter
1.2
IF A
1.0
D
=
tP
T
OHF02506
tP
IF
T
D=
0.8
0.005
0.01
0.02
0.6
0.033
0.05
0.1
0.2
0.4
0.5
1
0.2
010-5 10-4 10-3 10-2 10-1 100 101 s 102
tp
Max. Permissible Forward Current
IF = f (TA), RthJA = 450 K/W
120
Î F mA
100
OHR00883
80
R thjA = 450 K/W
60
40
20
0 0 20 40 60 80 100 ËC 120
TA
2007-04-25
5
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