VCSEL Laser Diode
Description
PRODUCT INFORMATION
840nm
1A448
VCSEL Laser Diode
Datacom
This Vertical Cavity SurfaceEmitting Laser is designed for Fibre Channel, Gigabit Ethernet and ATM applications.
For eye safety, the optical 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
Pfiber Po
100 160 400 50 2 830 840 0.
5 1.
9 3.
5 -130 860 1 2.
2 6
W W
IF =12mA IF =12mA
(Note 1)
Optical Power Slope Efficiency
(dPo/dIF)
(Note 2)
fc
p
mW/A IF =12mA GHz nm nm V mA dB/Hz IF =12mA, f=1 GHz IF =12mA IF =12mA IF =12mA IF =12mA
Bandwidth
(3dBel )
Peak Wavelength Spectral Width (FWHM) Forward Voltage (Fig.
5) Threshold Current Relative Intensity Noise
⌬ VF Ith RIN
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)
Tstg Top Ptot IF IFRM VR Tsld
-55 to +125Њ C 0 to +70Њ C 35 mW 15 mA 25 mA 1.
5 V 260ЊC
3.
7
14
Continuous Forward Current (fр10 kHz) Peak Forward Current (duty cycle р50%, fу1 MHz) Reverse Voltage
All dimensions in mm
0.
4
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
Rthjc Rthja d /dTj ⌬P ⌬Ith
400 700 0.
06 Ϯ0.
7 Ϯ0.
6
ЊC/W ЊC/W nm/ЊC dB mA
TO-46 Package With Lens
Class 1 Laser Product
Optical Power - Variation 0 to 70ЊC Threshold Current - Variation 0 to 70ЊC
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) 129...
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