Roithner LED38-PR Light emitting diode Datasheet

LIGHT EMITTING DIODES 1.6÷
÷4.6 µm
3.8 µm 16 µW
Model LED38-PR
•Light Emitting Diodes LED38-PR are designed for emitting at a spectral
range around 3800 nm. Heterostructures (HS) are grown on InAs
substrates. The output emission can be modulated by current flowing in
a forward direction.
•Light Emitting Diodes LED38-PR are developed for using in optical gas
sensors and medical diagnostics. They have stable output power and
lifetime more then 10000 hours.
•Related products: Our standard LED Driver provides power supply of
LED38-PR in two recommended here regimes (Quasi-CW and Pulsed).
Parameters
Min
Typ
Max
Wavelength, µm
3.70
3.80
3.90
FWHM, µm
0.60
0.70
0.80
Recommended regimes of operation
Quasi-CW @ 200 mA
Pulsed@1A
Switching Time, ns
f=2 kHz
Quasi-CW
Optical Power, µW
12
180
16
200
20
220
10
30
50
200 mA
250 µs 250 µs
Operating Temperature
o
Range, C
-240÷+50
Emitting Area, µm
300x300
f=2 kHz
2A
500 µs
260 oC
Soldering temperature
1 µs
Pulse
TO-18 with Parabolic Reflector
Package
Package TO-18 with Reflector
LED38 typical spectra at different temperatures
20
Intensity, a.u.
15
T=6°C
T=21°C
10
T=50°C
5
0
2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700
Wavelength, nm
LED38 - typical Current-voltage
characteristic
LED38 - typical power vs. current
characteristic at different
temperatures
20
40
30
Far field pattern
with and without reflector
1
0,9
20
16
0,8
0,7
12
T=6°C
8
T=21°C
4
T=50°C
Current, mA
Power, µW
0,6
10
0,5
0,4
0,3
0
0,2
0,1
-2
-1,5
-1
-0,5-10 0
-20
0,5
0
LED38 (without reflector)
-30
0
0
50
100
Current,
mA
150
200
-40
Voltage, V
LED38-PR (with reflector)
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