MITEL 1A239 Datasheet
PRODUCT INFORMATION
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840nm
1A239
High-Performance LED
Datacom, General Purpose
11960.11 & .12 1996-01-23
0.6
14
Ø1.5
Ø4.7
3.7
0.4
5.4
2.5
CASE
ANODE
CATHODE
BOTTOM VIEW
The diode chip is isolated from the case.
TO-46 Package With Lens
All dimensions in mm
This device is designed for Ethernet
and general applications and offers an
excellent price/performance ratio for
cost-effective solutions. Since it operates at low drive current, it generates
minimal heat—reducing cooling
requirements in systems employing
large numbers of LEDs.
Thermal Characteristics
Fiber:
50/125mm
Graded
Index
NA=0.20
Optical and Electrical Characteristics
(25°C Case Temperature)
Absolute Maximum Ratings
Note 1: Measured at the exit of 100 meters of fiber.
Note 2: 1A239A version with Fiber-Coupled Power > 80
m
W available on request.
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Thermal Resistance- Infinite Heat Sink R
thjc
300 8C/W
Thermal Resistance- No Heat Sink R
thja
600 8C/W
Temperature Coefficient- Optical Power dP/dT
j
-0.4 %/8C
Temperature Coefficient-Wavelength dl/dT
j
0.3 nm/8C
PARAMETER SYMBOL LIMIT
Storage Temperature T
stg
-55 to +1258C
Operating Temperature (derating: Fig.4) Top -55 to +1258C
Electrical Power Dissipation(derating: Fig.4) P
tot
130 mW
Continuous Forward Current (f<10 kHz) I
F
60 mA
Peak Forward Current (duty cycle<50%, f>1 MHz) I
FRM
100 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 TEST CONDITION
Fiber-Coupled Power P
fiber
50 90 mW IF=50 mA
(Fig.1,2,&3) (Table1) (Note 1,2)
Rise and Fall Time tr,t
f
710ns IF=50 mA
(10-90%) (no bias)
Bandwidth f
c
50 MHz IF=50 mA
(3dBel)
Peak Wavelength l
p
820 840 860 nm IF=50 mA
Spectral Width(FWHM) Dl 50 nm IF=50 mA
Forward Voltage (Fig.5) V
F
1.8 2.0 V IF=50 mA
Reverse Current I
R
20 mA VR=1V
Capacitance C 250 pF VR=0V, f=1MHz
840nm
1A239
High-Performance LED
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 = 50ʵm
z
FIGURE 1
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 = 50ʵm
z
FIGURE 2
0
20
40
60
80
100
%
0
40 80
120
160
200
mA
RELATIVE FIBER-COUPLED POWER
FORWARD CURRENT
50% DUTY CYCLE
DC
HEAT SINKED
FIGURE 3
FORWARD VOLTAGE
FORWARD CURRENT
mA
200
100
0
0
1 2
3
V
FIGURE 5
mW
300
200
100
0
0 50 100
150
¡C
MAX. ELECTRICAL POWER DISSIPATION
NO HEAT SINK
OPERATING TEMPERATURE
FIGURE 4
INFINITE
HEAT SINK
Core Diameter/Cladding Diameter
Numerical Aperture
50/125mm 62/125 m m 100/140 m m
0.20 0.275 0.29
Table 1
Typical Fiber-Coupled Power
90 mW 150mW 250 mW
5.6000
3.3000
Clip for SC-2A
R 1.00
80,000
0.5000
20.8200
10,2500
10.3000
4.9500
0.5000
4.5000
5.0800
3.6450
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