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MF228
High Performance LED
DS5454
ISSUE 1
May 2001
Ordering Information
MF228 MF228 MF228 MF228 MF228 ST SC SMA FC 11914.11 TO-46 Package 12517.11 ST Housing 13308.11 SC Housing 12135.11 SMA Housing 13008.11 FC Housing
Note: Rated Fiber coupled power apply only on the TO-46 package, for housing options fiber coupled power is typically 10% less
Description
This device is capable of providing high power into large-core fiber over a wide temperature range. Thanks to its very uniform phase distribution of the opticalpower, it is ideal for Electronic Distance Measurement equipment.
TO-46 Package with Lens
Optical and Electrical Characteristics - Case Temperature 25C
Parameter Fiber-Coupled Power (Fig. 1,2 & 3) (Table 1) Rise and Fall Time (10-90%) Bandwidth (3dBel) Peak Wavelength Spectral Width (FWHM) Forward Voltage (Fig. 5) Reverse Current Capacitance Symbol Pfiber tr'tf fc p VF IR C 250 830 Min. 1000 Typ. 1200 7 50 850 50 1.8 2.2 20 870 10 Max. Unit W ns MHz nm nm V A pF Test Condition IF=100mA (Note 1) IF=100mA (no bias) IF=100mA IF=100mA IF=100mA IF=100mA VR=1V VR=0V, f=1MHz Fiber: 200/ 280m Step Index NA=0.24
Note 1: Measured at the exit of 100 meters of fiber
O4.7 O1.5 0.6
CASE
3.7
14
2.5 5.4 BOTTOM VIEW
0.4
The anode is in electrical contact with the case
All dimensions in mm
1
CATHODE
ANODE
MF228
Absolute Maximum Ratings
Parameter Storage Temperature Operating Temperature see (derating: Fig. 4) Electrical Power Dissipation (derating: Fig. 4) Continuous Forward Current (f<10kHz) Peak Forward Current (duty cycle<50%, f>1MHz) Reverse Voltage Soldering Temperature (2mm from the case for 10sec) Symbol Tstg Top Ptot IF IFRM VR Tsld Limit -55 to +125C -40 to +85C 250 mW 110 mA 180 mA 1.5V 260C
Thermal Characteristics
Parameter Thermal Resistance-Infinite Heat Sink Thermal Resistance-No Heat Sink Temperature Coefficient - Optical Power Temperature Coefficient - Wavelength Symbol Rthjc Rthja dP/dTj d/dTj -0.4 0.3 Min. Typ. Max. 100 400 Unit C/W C/W %/C nm/C
Typical Fiber-Coupled Power
Core Diameter/Cladding Diameter Numberical Aperture 50/125 m 0.20 60 W 62.5/125 m 0.275 150 W 100/140 m 0.29 450 W 200/230 m 0.37 1300 W 200/280 m 0.24 1200 W
2
MF228
%
100
%
100
r z = opt. Oc = 200Em
RELATIVE FIBER-COUPLED POWER
RELATIVE FIBER-COUPLED POWER
80
80
z
60
60
40
40
r
20
r = opt. Oc = 200Em z
20
0 0.5 1.0 1.5 2.0 2.5 3.0 mm
0 0 40 80 120 160 200 m
z - AXIAL DISPLACEMENT OF FIBER
r - RADIAL DISPLACEMENT OF FIBER
Figure 1
%
100
Figure 2
mW
300
80
50% DUTY CYCLE
MAX. ELECTRICAL POWER DISSIPATION
Note: Maximum junction temperature can be increased to 150C after additional burn-in and screening.
RELATIVE FIBER-COUPLED POWER
200
60
DC
NO HEAT SINK
INFINITE HEAT SINK
40
100
20
HEAT SINKED
0 0 40 80 120 160 200 mA
0 0 50 100 150C
FORWARD CURRENT
OPERATING TEMPERATURE
Figure 3
mA
200
Figure 4
mA
200 Note: Dashed line indicates that the power dissipation may exceed the maximum ratings. Also see figure 4.
a HEAT SINKED b
160
PEAK FORWARD CURRENT
FORWARD CURRENT
120
c d
100
80
40
a) b) c) d)
Pfiber = const.A1450W peak Pfiber = const.A1200W peak Pfiber = const.A950W peak Pfiber = const.A700W peak
0 0 1 2 3V
0 -60 -20 20 60 100 140 C
FORWARD VOLTAGE
OPERATING TEMPERATURE
Figure 5
Figure 6
3
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