MITEL MF431ST Datasheet
10
Applications
• FDDI
• ATM-SDH/SONET 155Mbps
• Intra-Office
Telecommunications
• General Purpose
Features
• 1320nm Surface-Emitting
LED
• 125MHz Bandwidth
• Designed for 62.5/125µm
Fiber
• Aligned in ST
®
Receptacle
• MTTF >1,000,000 hours
Description
This LED is designed for
Datacom, Telecom and General
Purpose Applications. It has a
long wavelength LED for links up
to 10 km at 125Mbps. It meets
standards for FDDI (ANSI
X3T9.5) and ATM155Mbps.
The device is optimized for
62.5/125µm fiber and actively
aligned in an ST® receptacle.
The MF432 PIN Photodiode
is recommended as Receiver
for this LED.
13324.11 1997-04-01
DETECTOR
FIBER
MF431 LED
BOTTOM VIEW
ANODE
CASE
CATHODE
MF431 Datacom, Telecom, General Purpose LED
Ordering Information
PART # RECEPTACLE
MF431 ST ST
-40°C to +85°C
ST Assembly
MF431 ST
MF431 Functional Diagram
11
Thermal Characteristics
Units
˚C/W
˚C/W
%/˚C
nm/˚C
Max.
200
300
Min. Typ.
-0.75
0.45
Symbol
R
thjc
R
thjb
dP/dT
j
∆λ/dT
j
Parameter
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - On PCB
Temperature Coefficient - Optical Power
Temperature Coefficient - Wavelength
Optical & Electrical Characteristics (Case Temperature -25 to +70˚C)
Units
dBm
ns
MHz
nm
nm
V
µA
pF
Test Conditions
I
Peak
=60mA (Note 1, 2)
I
F
=60mA (Note 2, 3)
I
F
=60mA (Note 2)
I
F
=60mA (Note 3)
I
F
=60mA (Note 3)
I
F
=60mA
V
R
=1V
V
R
=0V, f=1MHz
Max.
2.5
1355
170
1.65
100
Min.
-19
1285
Typ.
2.0
125
1320
135
1.3
200
Symbol
P
fiber
trt
f
f
c
λp
∆
λ
V
F
I
R
C
Parameter
Fiber-Coupled-Power (Fig 1, 2, 3)
Rise & Fall Time (10-90%, no bias)
Bandwidth (3dBel)
Peak Wavelength
Spectral Width (FWHM)
Forward Voltage (Fig 5)
Reverse Current
Capacitance
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).
Note 3: Meets the FDDI ANSI X3T9.5 specification for FDDI.
Absolute Maximum Ratings*
Units
°C
°C
mW
mA
mA
V
°C
Max.
+85
+85
160
80
130
0.5
260
Min.
-40
-40
Symbol
Tstg
Top
Ptot
IF
IFRM
VR
Tsld
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)
*Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Note 1: 2mm from the case for 10s.
Datacom, Telecom, General Purpose LED MF431
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