
PRODUCT INFORMATION
Europe:
Tel
(46) 8 58 02 45 00
Tel
(44) 1291 436180
Fax
(46) 8 58 02 01 10
Fax
(44) 1291 436771
America:
Tel
1-800-96MITEL
Fax
(613) 592-6909
Asia:
Tel
(65) 293 5312
Fax
(65) 293 8527
12090.11 1994-09-20
Baseband Video
860
nm
0.6
14
1.5
4.7
3.7
0.4
5.4
2.5
CASE
ANODE
CATHODE
BOTTOM VIEW
The anode is in electrical contact with the case.
TO-46 Package With Lens
A
The low thermal droop of this device
allows baseband video transmission
with minimum distortion. The dou-
ble-lens optical system provides for
optimum coupling of power into the
fiber.
1A255
High-Performance LED
Thermal Characteristics
Fiber:
62.5/125
m
m
Graded
Index
NA=0.275
Optical and Electrical Characteristics
(25°C Case Temperature)
Absolute Maximum Ratings
PARAMETER
Note 1:
Measured at the exit of 100 meters of fiber.
Note 2:
Transientdecline in optical power due to self-heating.
PARAMETER
SYMBOL
MIN.
TYP
MAX.
UNIT
TEST CONDITION
Fiber-Coupled Power
(Fig.12,&3) (Table1)
P
fiber
80
120
m
W
I
F
=80mA
(Note 1)
Rise and Fall Time
(10-90%)
t
r,
t
f
6
8
ns
I
F
=80mA
(no bias)
Bandwidth
(3dBel)
Thermal Droop
(nonlinearity)
(Note 2)
f
c
55
MHz
I
F
=80mA
l
D
P
l
2
%
I
F
=80mA
Peak Wavelength
l
p
840
860
880
nm
I
F
=80mA
Spectral Width
(FWHM)
D
l
50
nm
I
F
=80mA
Forward Voltage
(Fig.5)
V
F
1.8
2.2
V
I
F
=80mA
Reverse Current
I
R
20
m
A
V
R
=1V
Capacitance
C
250
pF
V
R
=0V, f=1MHz
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Thermal Resistance-Infinite Heat Sink
R
thjc
R
thja
dP/dT
j
d
l
/dT
j
100
8
C/W
Thermal Resistance-No Heat Sink
400
8
C/W
Temperature Coefficient-Optical Power
-0.5
%/
8
C
Temperature Coefficient-Wavelength
0.3
nm/
8
C
SYMBOL
LIMIT
Storage Temperature
T
stg
-55 to +125
8
C
Operating Temperature
(derating: Fig.4)
T
op
-55 to +125
8
C
Electrical Power Dissipation
(derating: Fig.4)
P
tot
250 mW
Continuous Forward Current
(f
<
10 kHz)
I
F
110 mA
Peak Forward Current
(duty cycle
<
50%, f
>
1 MHz)
I
FRM
180 mA
Reverse Voltage
V
R
1.5 V
Soldering Temperature
(2mm from the case for 10 sec)
T
sld
260
8
C