LED19SC - Optically Immersed 1.9 µm LED0 pages

Infra Red LED
LED19SC
Optically Immersed 1.9 µm LED in heat-sink optimised housing
λmax
Ppulsed
PCW
τ
Peak wavelength
Pulsed power at I=1 A
CW power at I=200 mA
Switching time
Code
LED19Sc
Emission
size, mm
Thread
М5×0.5
LED19TO8TEC
µm
mW
mW
ns
1.95±0.05
6.0±1.2
1.0±0.2
≤20
Far-field pattern
FWHM, deg.
Operation (storage)
conditions, 0C
≤35
Lens material
-25 - +60 (+80)
Si
∅ 3.3
LED19Sc
Si lens and quartz window
LED19Sc
Polarity
short wire or black point is
negative
See fig. below
LED19TO8TEC
100
Thermosensor resistance, kOhm
Product view
60
50
∆T, K
40
30
20
1 TEC −; 2 TEC +
3 PD +; 6 PD −
4, 5 thermosensor
10
0
0.0
0.2
0.4
0.6
0.8
10
1
-40 -20 0 20 40 60 80 100
o
TEC current (A)
Temperature ( C)
1000
T
3
Drive current
τ
2
1
600
400
200
400
o
600
800
1000
0.4
0.6
0.8
1.0
0.0
1.7
1.8
1.96
1.0
1.92
1.6
1.4
1.90
1.2
1.0
1.88
0.8
Maximal current, mA
1.8
2.1
Duty cycle = τ/ T,
τ - pulse duration,
T - pulse period
0.8
Intensity, arb.un.
Peak wavelength, µm
2.0
2.0
2000
Power
1.94
1.9
Wavelengh, µm
Voltage, V
2.4
Power at fix. current, arb.un.
0.5
20 C
0
Current, mA
2.2
o
60 C
o
40 C
o
20 C
o
0C
o
-20 C
200
Time
0
Normalized Intensity
4
wafer L3
H2O absorption
800
Current, mA
5
0
1.0
o
20 C, T=255 µs
τ=
5 µs
20 µs
50 µs
100 µs
235 µs
6
Pulsed power, mW
Output power and peak wavelength vs. Output power vs. current, current-voltage
temperature, far-field pattern and maximal
curve and emission
current vs. operation conditions
spectra
All devices are stressed at 80ºC and I=200 mA (CW) for 10 hrs before final test and shipping.
Beam divergence of the LEDs is small and thus we recommend adjusting LED position regarding the detector system before final
evaluation/use of the devices.
All data is valid for room temperature (22ºC) and LED attached to a heatsink. A heatsink is important for normal LED operation
especially in the CW mode.
Available accessories include driver electronics and detectors.
Available wavelengths include 1.9, 2.15, 3.0, 3.4, 3.6, 3.8, 4.2, 4.7, 5.5 and 7.0 µm.
0.6
0.4
0.2
1000
900
800
700
600
500
400
300
200
Wavelength
attached to a heatsink
without a heatsink
0.6
1.86
-20 -10 0 10 20 30 o40 50 60
Temperature, C
0.0
-40
100
-20
0
20
Angle, deg.
40
0.01
0.1
1
Duty cycle
Rev 2.0
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Scitec Instruments Ltd, Bartles Industrial Estate, North Street, Redruth, Cornwall, TR15 HR, UK
Tel. +44 1209 314608, Fax +44 1209 314609
or visit our website: www.scitec.uk.com