MF430
Datacom, Telecom, General Purpose LED
MF430 ST
Applications
Ethernet 10 or 100Mbps
Token Ring
Fibre Channel 266Mbps
Short Wavelength FDDI
Short Wavelength ATM-
SDH/SONET 155Mbps
•
Intra-Office Telecom
•
General Purpose
•
•
•
•
•
Description
This high performance LED
has been designed for Datacom,
Telecom or General Purpose
Applications. The short wave-
length LED allows cost-effective
links over short distances. This
very high speed device has an
actively aligned receptacle for
optimized coupling of power
to 62.5/125µm fiber. A Silicon
Photodiode is recommended
as Receiver for this LED.
ST Assembly
Features
•
•
•
•
•
865nm Surface-Emitting LED
250MHz Bandwidth
Designed for 62.5/125µm Fiber
Aligned in ST® Receptacle
MTTF >1,000,000 hours
Ordering Information
PART #
RECEPTACLE
MF430 ST
ST
-40°C to +85°C
MF430 Functional Diagram
FIBER
ANODE
CASE
DETECTOR
CATHODE
BOTTOM VIEW
MF430
LED
ST® is a registered trademark of Lucent
13323.11 1997-04-01
6
Datacom, Telecom, General Purpose LED
MF430
Absolute Maximum Ratings*
Parameter
Storage Temperature
Operating Temperature (Fig 4)
Electrical Power Dissipation (Fig 4)
Continuous Forward Current (f≤10kHz)
Peak Forward Current (duty cycle
≤50%,
f≥1MHz)
Reverse Voltage
Soldering Temperature (Note 1)
Symbol
T
stg
T
op
P
tot
I
F
I
FRM
V
R
T
sld
Min.
-40
-40
Max.
+85
+85
250
110
180
1.5
260
Units
°C
°C
mW
mA
mA
V
°C
*Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Note 1: 2mm from the case for 10s.
Optical & Electrical Characteristics
(Case Temperature -25 to +70˚C)
Parameter
Fiber-Coupled-Power (Fig 1, 2, 3)
Rise & Fall Time (10-90%, no bias)
Bandwidth (3dB
el
)
Peak Wavelength
Spectral Width (FWHM)
Forward Voltage (Fig 5)
Reverse Current
Capacitance
Symbol
P
fiber
t
r
t
f
f
c
Min.
-17.5
Typ.
1.5
250
Max.
2
880
60
2.1
20
Units
dBm
ns
MHz
nm
nm
V
µA
pF
Test Conditions
I
Peak
=60mA (Note 1,2)
I
F
=60mA (Note 2)
I
F
=60mA (Note 2)
I
F
=60mA
I
F
=60mA
I
F
=60mA
V
R
=1V
V
R
=0V, f=1MHz
λ
p
∆
λ
V
F
I
R
C
850
865
50
20
Note 1: Average power at 10MHz/50% duty cycle. Measured at the exit of 100m of fiber.
Note 2: 62.5/125µm graded index fiber (NA = 0.275).
Thermal Characteristics
Parameter
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - On PCB
Temperature Coefficient - Optical Power
Temperature Coefficient - Wavelength
Symbol
R
thjc
R
thjb
dP/dT
j
∆
λ
/dT
j
Min.
Typ.
Max.
200
300
Units
˚C/W
˚C/W
%/˚C
nm/˚C
-0.6
0.3
7
MF430
Datacom, Telecom, General Purpose LED
%
100
%
100
r
z = opt.
Øc = 62.5
µm
RELATIVE FIBER-COUPLED POWER
RELATIVE FIBER-COUPLED POWER
80
80
z
60
60
40
40
r
20
r = opt.
Øc = 62.5
µm
z
20
0
0.5
1.0
1.5
2.0
2.5
3.0
mm
0
0
20
40
60
80
z - AXIAL DISPLACEMENT OF FIBER
r - RADIAL DISPLACEMENT OF FIBER
Figure 1
Figure 2
%
100
mW
300
MAX. ELECTRICAL POWER DISSIPATION
RELATIVE FIBER-COUPLED POWER
80
50% DUTY CYCLE
INFINITE
HEAT SINK
200
ON PC BOARD
60
DC
40
100
20
HEAT SINKED
0
0
40
80
120
160
200
mA
0
0
50
100
FORWARD CURRENT
OPERATING TEMPERATURE
Figure 3
Figure 4
mA
200
FORWARD CURRENT
100
0
0
1
2
3
V
FORWARD VOLTAGE
Figure 5
8
Datacom, Telecom, General Purpose LED
MF430
MF430 ST Mechanical Data
2-56 UNC - 2B
max.0.5
3/8"-32 UNEF
FIBER
END
SLOT SIDE
0.006
Ø2.502
+0.01
0
12.7
2.5
9.5
5.4
0.4
MARKING SIDE
Ø2.5
+0
-0.004
7.89
RECOMMENDED
FERRULE
(not included)
7.6
min.12
3.9
5.4
20.1
Note: The LED chip is isolated from the case. All dimensions in mm.
Typical Drive Circuit
ST Packaging Hardware
3/8 - 32 UNEF
2B THREAD
MF430
9.53
ECL
V
REF
12.70
1.65
I
-5V
HEX-NUT
10.41
14.27
0.46
WASHER
9
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