PRODUCT INFORMATION
840
nm
1A448
VCSEL Laser Diode
Datacom
This Vertical Cavity Surface-
Emitting Laser is designed for Fibre
Channel, Gigabit Ethernet and ATM
applications. For eye safety, the opti-
cal power is attenuated to comply
with IEC Laser Class 1 requirements.
Optical and Electrical Characteristics
PARAMETER
SYMBOL
MIN.
TYP
.
MAX.
UNIT
(25°C Case Temperature)
TEST CONDITION
Fiber-Coupled Power
1A448
1A448A
P
fiber
P
o
100
160
400
50
W
W
I
F
=12mA
I
F
=12mA
(Note 1)
Optical Power
Slope Efficiency
(dPo/dI
F
)
(Note 2)
mW/A
I
F
=12mA
GHz
860
1
2.2
6
nm
nm
V
mA
dB/Hz
I
F
=12mA, f=1 GHz
I
F
=12mA
I
F
=12mA
I
F
=12mA
I
F
=12mA
Bandwidth
(3dBel )
f
c
p
2
830
840
0.5
Peak Wavelength
Spectral Width
(FWHM)
Forward Voltage
(Fig.5)
Threshold Current
Relative Intensity Noise
V
F
I
th
RIN
1.9
3.5
-130
Note 1:
Fiber: 50/125 Graded Index, NA=0.2 or 62.5/125 Graded Index, NA=0.275.
Note 2:
Complies with laser Class 1 when operated at max 12 mA; Class 3 above 12 mA.
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
0 to +70 C
35 mW
15 mA
25 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
ANODE
CATHODE
Soldering Temperature
(2mm from the case for 10 sec)
2.5
5.4
BOTTOM VIEW
Thermal Characteristics
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
The chip is isolated from the case.
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - No Heat Sink
Temp. Coefficient -W
avelength
R
thjc
R
thja
d
/dT
j
P
Ith
400
700
0.06
0.7
0.6
C/W
C/W
nm/ C
dB
mA
TO-46 Package With Lens
Class 1 Laser Product
Optical Power - Variation 0 to 70 C
Threshold Current - Variation 0 to 70 C
13534.11 & 12 1999-04-01
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
MITEL [ MITEL NETWORKS CORPORATION ]
