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1A448 Datasheet PDF

1A448
Mitel Networks Corporation

Part Number 1A448
Description VCSEL Laser Diode(Datacom)
Page 10 Pages
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PRODUCT INFORMATION
840nm
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.
Ø4.7
Ø1.5
0.6
3.7
14
0.4
CASE
ANODE
CATHODE
Optical and Electrical Characteristics (25°C Case Temperature)
PARAMETER
SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION
Fiber-Coupled Power
1A448
1A448A
Pfiber 100
160
W IF =12mA (Note 1)
Optical Power
Po
400 W IF =12mA (Note 2)
Slope Efficiency
(dPo/dIF)
Bandwidth
(3dBel )
50 mW/A IF =12mA
fc 2 GHz IF =12mA
Peak Wavelength
p 830 840 860 nm IF =12mA
Spectral Width (FWHM)
0.5 1 nm IF =12mA
Forward Voltage (Fig.5)
VF
1.9 2.2 V IF =12mA
Threshold Current Ith 3.5 6 mA
Relative Intensity Noise RIN
-130 dB/Hz IF =12mA, f=1 GHz
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
PARAMETER
Storage Temperature
Operating Temperature (derating: Fig.4)
SYMBOL
Tstg
Top
LIMIT
-55 to +125ЊC
0 to +70ЊC
Electrical Power Dissipation (derating: Fig.4)
Continuous Forward Current (fр10 kHz)
Peak Forward Current (duty cycleр50%, fу1 MHz)
Reverse Voltage
Soldering Temperature (2mm from the case for 10 sec)
Ptot
IF
IFRM
VR
Tsld
35 mW
15 mA
25 mA
1.5 V
260ЊC
2.5
5.4
BOTTOM VIEW
The chip is isolated from the case.
TO-46 Package With Lens
Class 1 Laser Product
13534.11 & 12 1999-04-01
Thermal Characteristics
PARAMETER
SYMBOL MIN. TYP.
Thermal Resistance - Infinite Heat Sink Rthjc
400
Thermal Resistance - No Heat Sink
Rthja
700
Temp. Coefficient -Wavelength
Optical Power - Variation 0 to 70ЊC
d/dTj
P
0.06
Ϯ0.7
Threshold Current - Variation 0 to 70ЊC Ith
Ϯ0.6
MAX.
UNIT
ЊC/W
ЊC/W
nm/ЊC
dB
mA
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

















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