PRODUCT INFORMATION
840
nm
1A239
High-Performance LED
Datacom, General Purpose
This device is designed for Ethernet
and general applications and offers an
excellent price/performance ratio for
cost-effective solutions. Since it oper-
ates at low drive current, it generates
minimal heat — reducing cooling
requirements in systems employing
large numbers of LEDs.
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
p
50
90
7
50
10
W
ns
MHz
860
nm
nm
2.0
20
V
A
pF
I
F
=50 mA
(Note 1,2)
Fiber:
50/125
m
Graded
Index
Rise and Fall Time
(10-90%)
I
F
=50 mA
(no bias)
Bandwidth
(3dBel)
I
F
=50 mA
I
F
=50 mA
I
F
=50 mA
I
F
=50 mA
V
R
=1V
NA=0.20
Peak Wavelength
Spectral Width
(FWHM)
Forward Voltage
(Fig.5)
Reverse Current
Capacitance
820
840
50
V
F
I
R
C
1.8
250
V
R
= 0V, f=1 MHz
Note 1:
Measured at the exit of 100 meters of fiber.
Note 2:
1A239A version with Fiber-Coupled Power > 80 W available on request.
Absolute Maximum Ratings
Ø4.7
Ø1.5
0.6
PARAMETER
SYMBOL
LIMIT
Storage Temperature
Operating Temperature
(derating: Fig.4)
Electrical Power Dissipation
(derating: Fig.4)
T
stg
Top
P
tot
I
F
I
FRM
V
R
T
sld
-55 to +125 C
-55 to +125 C
130 mW
60 mA
100 mA
1.5 V
260 C
3.7
14
Continuous Forward Current
(f
0.4
10 kHz)
50%, f 1 MHz)
Peak Forward Current
(duty cycle
Reverse Voltage
All dimensions in mm
CASE
CATHODE
ANODE
Soldering Temperature
(2mm from the case for 10 sec)
2.5
5.4
BOTTOM VIEW
The diode chip is isolated from the case.
Thermal Characteristics
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
TO-46 Package With Lens
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - No Heat Sink
R
thjc
-0.4
0.3
300
600
C/W
C/W
%/ C
nm/ C
R
thja
Temperature Coefficient - Optical Power
dP/dT
j
d /dT
j
Temperature Coefficient -W
avelength
11960.11 & .12 1996-01-23
Europe:
Tel
(46) 8 58 02 45 00
Fax
(46) 8 58 02 01 10
Tel
(44) 1291 436180
Fax
(44) 1291 436771
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Tel
1-800-96MITEL
Fax
(613) 592-6909
Asia:
Tel
(65) 293 5312
Fax
(65) 293 8527
MITEL [ MITEL NETWORKS CORPORATION ]
