MITEL 1A284 Datasheet
PRODUCT INFORMATION
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12270.11 1997-07-08
1A284
High-Performance LED
Baseband Video
0.6
14
Ø1.5
Ø4.7
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
All dimensions in mm
The low thermal droop of this device
allows baseband video transmission
with minimum distortion. The double-lens optical system provides for
optimum coupling of power into the
fiber.
1320nm
Thermal Characteristics
Absolute Maximum Ratings
Fiber:
62.5/125mm
Graded
Index
NA=0.275
Optical and Electrical Characteristics
(25°C Case Temperature)
Note 1: Measured at the exit of 100 meters of fiber.
Note 2: Transient decline in optical power due to self-heating.
PARAMETER SYMBOL LIMIT
Storage Temperature T
stg
-55 to +1258C
Operating Temperature (derating: Fig.4) T
op
-55 to +1258C
Electrical Power Dissipation(derating: Fig.4) P
tot
230 mW
Continuous Forward Current (f<10 kHz) I
F
110 mA
Peak Forward Current (duty cycle<50%, f>1 MHz) I
FRM
170 mA
Reverse Voltage V
R
1.5 V
Soldering Temperature (2mm from the case for 10 sec) T
sld
2608C
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Thermal Resistance- Infinite Heat Sink R
thjc
100 8C/W
Thermal Resistance- No Heat Sink R
thja
400 8C/W
Temperature Coefficient- Optical Power dP/dT
j
-0.8 %/8C
Temperature Coefficient-Wavelength dl/dT
j
0.55 nm/8C
PARAMETER SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION
Fiber-Coupled Power P
fiber
35 50 mW IF=100mA
(Fig.1,2,&3) (Table1) (Note 1)
Rise and Fall Time tr,t
f
69nsI
F
=100mA
(10-90%) (no bias)
Bandwidth f
c
55 MHz IF=100mA
(3dBel)
Thermal Droop lDPl 2%I
F
=100mA
(nonlinearity)
(Note 2)
Peak Wavelength lp1280 1320 1350 nm IF=100mA
Spectral Width (FWHM) Dl 120 155 nm IF=100mA
Forward Voltage (Fig.5) V
F
1.5 2 V IF=100mA
Reverse Current I
R
100 mA VR=1V
Capacitance C 200 pF VR=0V, f=1MHz
1A284
High-Performance LED
FIGURE 2
0
20
40
60
80
100
%
0
20 40
60
80
100
µm
r - RADIAL DISPLACEMENT OF FIBER
RELATIVE FIBER-COUPLED POWER
r
z = opt.
Øc =
62.5ʵm
z
FIGURE 1
0
20
40
60
80
100
%
0.5
1.0 1.5
2.0
2.5
3.0
mm
z - AXIAL DISPLACEMENT OF FIBER
RELATIVE FIBER-COUPLED POWER
r
r = opt.
Øc =
62.5ʵm
z
FIGURE 5
FORWARD VOLTAGE
FORWARD CURRENT
mA
200
100
0
0
1 2
3
V
FIGURE 3
0
20
40
60
80
100
%
0
40 80
120
160
200
mA
FORWARD CURRENT
RELATIVE FIBER-COUPLED POWER
50% DUTY CYCLE
DC
HEAT SINKED
FIGURE 4
mW
300
200
100
0
0 50 100
150¡C
NO HEAT SINK
OPERATING TEMPERATURE
MAX. ELECTRICAL POWER DISSIPATION
INFINITE
HEAT SINK
1320nm
Core Diameter/Cladding Diameter
Numerical Aperture
50/125mm 62.5/125m m 100/140 m m
0.20 0.275 0.29
Table 1
Typical Fiber-Coupled Power
12mW 50 mW 90mW
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