PRODUCT INFORMATION
860
nm
1A314
High-Performance LED
Baseband Video
The exceptionally low thermal droop
of this device allows baseband video
transmission with ultimate quality
and minimum distortion. The double-
lens optical system provides for opti-
mum coupling of power into the fiber.
Optical and Electrical Characteristics
PARAMETER
SYMBOL
MIN.
TYP
.
MAX.
UNIT
(25°C Case Temperature)
TEST CONDITION
Fiber-Coupled Power
(Fig.1, 2,& 3) (Table 1)
P
fiber
t
r,tf
f
c
l
Pl
p
70
100
6
55
1
8
W
ns
MHz
%
880
nm
nm
2
20
V
A
pF
I
F
=100mA
(Note 1)
I
F
=100mA
(no bias)
Fiber:
62.5/125
m
Graded
Rise and Fall Time
(10-90%)
Bandwidth
(3dBel )
I
F
=100 mA
I
F
=100 mA
I
F
=100 mA
I
F
=100 mA
I
F
=100 mA
V
R
=1V
Index
NA=0.275
Thermal Droop
(nonlinearity)
(Note 2)
Peak Wavelength
Spectral Width
(FWHM)
Forward Voltage
Reverse Current
Capacitance
(Fig.5)
840
860
50
V
F
I
R
C
1.6
250
V
R
= 0V, f=1 MHz
Note 1:
Measured at the exit of 100 meters of fiber.
Note 2:
Transient decline in optical power due to self-heating.
Ø4.7
Ø1.5
0.6
Absolute Maximum Ratings
PARAMETER
SYMBOL
LIMIT
3.7
Storage Temperature
Operating Temperature
14
T
stg
T
op
P
tot
I
F
I
FRM
V
R
T
sld
-55 to +125 C
-55 to +125 C
250 mW
110 mA
180 mA
1.5 V
260 C
Electrical Power Dissipation
Continuous Forward Current
(
10 kHz)
50%, f 1 MHz)
0.4
CASE
Peak Forward Current
(duty cycle
Reverse Voltage
ANODE
CATHODE
All dimensions in mm
Soldering Temperature
(2mm from the case for 10 sec)
2.5
5.4
BOTTOM VIEW
Thermal Characteristics
The anode is in electrical contact with the case.
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
TO-46 Package With Lens
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - No Heat Sink
R
thjc
R
thja
-0.5
0.3
d /dT
j
100
400
C/W
C/W
%/ C
nm/ C
Temperature Coefficient - Optical Power
dP/dT
j
Temperature Coefficient -W
avelength
12428.11 1994-09-20
Europe:
Tel
(46) 8 58 02 45 00
Fax
(46) 8 58 02 01 10
Tel
(44) 1291 436180
Fax
(44) 1291 436771
America:
Tel
1-800-96MITEL
Fax
(613) 592-6909
Asia:
Tel
(65) 293 5312
Fax
(65) 293 8527
High-Performance LED
1A314
860
nm
Typical Fiber-Coupled Power
Core Diameter/Cladding Diameter
Numerical Aperture
RELATIVE FIBER-COUPLED POWER
%
100
FIGURE 1
%
100
FIGURE 2
r
z = opt.
Øc = 62.5ʵm
RELATIVE FIBER-COUPLED POWER
50/125 m
0.20
62.5/125 m
0.275
100/140 m
0.29
200/230 m
0.37
80
80
z
40 W
Table 1
100 W
250 W
400 W
60
60
40
40
r
20
r = opt.
Øc = 62.5ʵm
z
20
0
0.5
1.0
1.5
2.0
2.5
3.0
mm
0
0
20
40
60
80
100
µm
z - AXIAL DISPLACEMENT OF FIBER
r - RADIAL DISPLACEMENT OF FIBER
%
100
FIGURE 3
MAX. ELECTRICAL POWER DISSIPATION
mW
300
FIGURE 4
RELATIVE FIBER-COUPLED POWER
80
50% DUTY CYCLE
200
60
DC
INFINITE
HEAT SINK
NO HEAT SINK
40
100
20
HEAT SINKED
0
0
40
80
120
160
200
mA
0
0
50
100
150¡
C
FORWARD CURRENT
OPERATING TEMPERATURE
mA
200
FIGURE 5
FORWARD CURRENT
100
0
0
1
2
3
V
FORWARD VOLTAGE
