MF272
810 nm - 70 MHz High Performance LED
Data Sheet
October 2004
Ordering Information
MF272
MF272 ST
MF272 SMA
MF272 FC
TO-46 Package
ST Housing
SMA Housing
FC Housing
-55
°
C to +125
°
C
Note: Rated Fiber coupled power apply only on the TO-46
package, for housing options fiber coupled power is
typically 10% less
Features
•
•
•
810 nm Surface-Emitting LED
70 MHz Bandwidth
Designed for 200/280 µm fiber
Description
This high speed device is optimized at 810 nm
wavelength which is of particular interest for use in
radiation-hardened fiber. It operates in a wide
temperature range and delivers very high power to
200 µm core fiber, making it ideal in avionics and
military datacom applications.
Applications
•
•
•
Avionics
Sensors
Military LANs
CASE
CATHODE
ANODE
CATHODE
ANODE
Bottom View
Anode in electrical contact with the case
Figure 1 - Pin Diagram
Figure 2 - Functional Schematic
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2001-2004, Zarlink Semiconductor Inc. All Rights Reserved.
MF272
Optical and Electrical Characteristics - Case Temperature 25
°
C
Parameter
Fiber-Coupled Power
(Figures 3, 4, and 5) (Table 1)
Rise and Fall Time (10-90%)
Bandwidth (3 dB
el
)
Peak Wavelength
Spectral Width (FWHM)
Forward Voltage (Figure 7)
Reverse Current
Capacitance
Note 1:
Data Sheet
Symbol
P
fiber
t
r
,t
f
f
c
λ
p
∆λ
V
F
I
R
C
Min.
1300
Typ.
1600
7
70
Max.
Unit
µW
Test Condition
I
F
= 100 mA
(Note 1)
I
F
= 100 mA
(no bias)
I
F
= 100 mA
I
F
= 100 mA
I
F
= 100 mA
I
F
= 100 mA
V
R
= 1 V
V
R
-0V, f = 1 MHz
Fiber:
200/280
µm
Step
Index
10
ns
MHz
790
810
50
2.2
250
830
2.4
20
nm
nm
V
µA
pF
Measured at the exit of 100 meters of fiber.
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature (derating: Figure 6)
Electrical Power Dissipation (derating: Figure 6)
Continuous Forward Current (f<10 kHz)
Peak Forward Current (duty cycle<50%,f>1 MHz
Reverse Voltage
Soldering Temperature (2 mm from the case for 10 sec.)
Symbol
T
stg
T
op
P
tot
I
F
I
FRM
V
R
T
sld
Limit
-55 to +125
°
C
-55 to +125
°
C
250 mW
110 mA
180 mA
1.5 V
260
°
C
Thermal Characteristics
Parameter
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - No Heat Sink
Temperature Coefficient - Optical Power
Temperature Coefficient - Wavelength
Symbol
R
thjc
R
thja
dP/dT
j
d
λ
/dT
j
-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 Numerical Aperture
50/125
µm
0.20
60
µW
62.5/125
µm
0.275
150
µW
100/140
µm
0.29
600
µW
200/230
µm
0.37
2000
µW
200/280
µm
0.24
1600
µW
2
Zarlink Semiconductor Inc.
MF272
100
90
80
Relative Fiber-Coupled Power (%)
70
60
50
40
30
20
10
0
0.5
0.75
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
z - Axial Displacem ent of Fiber
(µm)
)
(m m
Data Sheet
r
z
r - optimal
Ø
C
= 200
µm
Figure 3 - Relative Fiber-coupled Power vs. z - Axial Displacement of Fiber
100
r
z
Relative Fiber-Coupled Power (%)
80
z - optimal
Ø
C
= 200
µm
60
40
20
0
0
25
50
75
100
125
150
175
200
r - Radial Displacem ent of Fiber (
µ
m )
Figure 4 - Relative Fiber-Coupled Power vs. r - Radial Displacement of Fiber
3
Zarlink Semiconductor Inc.
MF272
100
90
Relative Fiber-Coupled Power (%)
80
70
60
50
40
30
20
10
0
0
20
40
60
80
100
120
140
160
180
Heat Sinked
DC
50% Duty Cycle
Data Sheet
200
Forw ard Current (m A)
Figure 5 - Relative Fiber-coupled Power vs. Forward Current
300
275
Max. Electrical Power Dissipation (mW)
250
225
200
175
150
125
100
75
50
25
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
Infinite Heat Sink
No Heat Sink
Note: Maximum junction temperature can be increased to
150
o
C after additional burn-in and screening.
Operating Tem perature (
O
C)
Figure 6 - Max. Electrical Power Dissipation vs. Operating Temperature
4
Zarlink Semiconductor Inc.
MF272
Data Sheet
200
175
150
Forward Current (mA)
125
100
75
50
25
0
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
Forw ard Voltage (V)
Figure 7 - Forward Current vs. Forward Voltage
200
Note: Dashed line indicates that the pow er
dissipation may exceed the maximum ratings.
160
Peak Forward Current (mA)
b
120
Heat Sinked
c
a
d
80
a) P fiber
b) P fiber
c) P fiber
d) P fiber
= const. 1450
µ
W peak
= const. 1200
µ
W peak
= const. 950
µ
W peak
= const. 700
µ
W peak
40
0
-60
-40
-20
0
20
40
60
80
100
120
140
Operating Tem perature (
O
C)
Figure 8 - Peak Forward Current vs. Operating Temperature
5
Zarlink Semiconductor Inc.
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