1A448 Datasheet, PDF (1/10 Pages) Mitel Networks Corporation – VCSEL Laser Diode(Datacom)

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
P_fiber 100
160
␮W I_F =12mA (Note 1)
Optical Power
P_o
400 ␮W I_F =12mA (Note 2)
Slope Efficiency
(dP_o/dI_F)
Bandwidth
(3dBel )
␩
50
mW/A I_F =12mA
f_c
2
GHz I_F =12mA
Peak Wavelength
␭_p 830 840 860 nm I_F =12mA
Spectral Width (FWHM)
⌬␭
0.5 1 nm I_F =12mA
Forward Voltage (Fig.5)
V_F
1.9 2.2 V I_F =12mA
Threshold Current
I_th
3.5 6 mA
Relative Intensity Noise RIN
-130
dB/Hz I_F =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)
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)
SYMBOL
T_stg
Top
P_tot
I_F
I_FRM
V_R
T_sld
LIMIT
-55 to +125ЊC
0 to +70ЊC
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. MAX.
Thermal Resistance - Infinite Heat Sink R_thjc
400
Thermal Resistance - No Heat Sink
R_thja
700
Temp. Coefficient -Wavelength
Optical Power - Variation 0 to 70ЊC
d␭ /dT_j
⌬P
0.06
Ϯ0.7
Threshold Current - Variation 0 to 70ЊC ⌬Ith
Ϯ0.6
UNIT
ЊC/W
ЊC/W
nm/ЊC
dB
mA
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