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Электронный компонент: T2527

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520
Coaxial Pigtailed Laser Module
Technical Data
LST252X - 200
W Coaxial Laser
LST282X - 1 mW Coaxial Laser
LST292X - 1.6 mW Coaxial Laser
LST3X21 - Dual-in-Line Package
Features
Compact Coaxial Package
Strained Multi Quantum
Well (SMQW) Laser Chip
Low Thresholds Current and
Operating Currents
Wide Operating Tempera-
ture -40
C to +85
C
Optical Power May Be
Customized up to 2 mW
Modulation Capability up to
622 Mb/s
Convenient Variety of
Pinout and Mounting Flange
Options
Applications
Telecommunications
Fiber in the Loop
Inter/Intra Office
SONET/SDH
Datacommunications
Switches
Description
Products in the LST2X2X family
are compact coaxial pigtailed
laser transmitters, operating in
the 1300 nm wavelength region
and coupling light to single mode
fiber. They are designed for use
in short, medium and long
distance networks with bit rates
up to 622 Mb/s.
The device features a high
reliability SMQW laser diode and
rear facet monitor photodiode.
These are electrically connected
to four pins in an industry-
standard configuration.
Environmental performance is
designed to be compatible with
the requirements of Bellcore's
TA-NWT-000983 document.
Options within the LST2X2X
family offer pinouts and pin
rotational orientations designed
to match existing products
available on the market. We also
offer a comprehensive range of
alternative mounting flanges
including a dual in line option.
If the specific arrangement or
performance you require is not
listed, please contact your local
representative as our highly
flexible design and manufacturing
processes allow both physical and
electro-optical customization to
meet your needs.
Laser Safety Warning
This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid
possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.
5965-7336E (4/97)
521
Limits
Parameter
Symbol
Test Condition
Min.
Max.
Units
Laser Forward Current
If
DC
120
mA
Laser Reverse Voltage
Vlr
DC
2
V
Photodiode Reverse Voltage
Vr
DC
20
V
Photodiode Forward Current
Ipf
DC
1
mA
Operating Temperature
Tc
Temperature measured at case
40
+85
C
Storage Temperature
Ts
40
+85
C
Relative Humidity
RH
noncondensing
%RH
Fiber Pull Strength
Three times; 10 sec.
10
N
Mechanical Shock
MIL-STD-883D, Method 2002,
500
G
Condition A
Vibration
MIL-STD-883D, Method 2007,
20
G
Condition A
Absolute Maximum Ratings
Absolute limiting (maximum) ratings mean that no catastrophic damage will occur if the product is subjected to these ratings for short periods,
provided that each limiting parameter is in isolation and all other parameters have values within the performance specification. It should not be
assumed that limiting values of more than one parameter can be applied to the product at the same time.
Performance Specifications
LST252X
LST282X
LST292X
LST3521
LST3821
LST3921
Parameter
Symbol
Test Condition
Min. Max. Min. Max. Min. Max. Units
LASER
CW, Tc = 40
C to
+85
C, Po as noted
below unless otherwise
stated
Rated Optical Power
Po
Tc = ranges specified
0.2
1.0
1.6
mW
above, CW
Threshold Current
Ith
Tc = +25
C
3.5
10
3.5
10
3.5
10
mA
Threshold Current
Ith
1.5
30
1.5
30
1
30
mA
Coupled Power in
Pth
If = Ith 2 mA
10
10
10
W
"Off" State
Slope Efficiency
Tc = +25
C
10
16
50
80
80
128
W/mA
Drive Current above
Id
Tc = +25
C
12.5
20
12.5
20
12.5
20
mW
Ith, for Im = Im
(Po, +25
C)
Tc = 40
C to +85
C
10
33.3
10
33.3
10
33.3
mA
Forward Voltage
Vf
1.6
1.6
1.6
V
Center Wavelength
Tc = +25
C
1286 1336 1286 1336 1286 1336
nm
Tc = 40
C to +85
C
1260 1360 1260 1360 1260 1360
nm
Wavelength/
/
T
0.4
0.4
0.4
nm/
C
Temperature
Coefficient
Spectral Width
One sigma, RMS
2.5
2.5
2.5
nm
Rise and Fall Time
10-90%, Ith to Po
0.5
0.5
0.5
ns
522
Performance Specifications (continued)
LST252X
LST282X
LST292X
LST3521
LST3821
LST3921
Parameter
Symbol
Test Condition
Min. Max. Min. Max. Min. Max. Units
MONITOR
Tc = +25
C, Vr = 5 V,
PHOTODIODE
Po = Rated Power
Photocurrent
Im
200
1000
200
1000
200
1000
A
Dark Current
Id
Po = 0
W
20
20
20
nA
Capacitance
C
1 MHz
10
10
10
pF
Tracking Error
DR
Im = Im (Po, +25
C)
1
+1
1
+1
1
+1
dB
Tc + 40
C to + 85
C
Rise and Fall Time
tr
10-90%, Ith to Po
2
2
-
ns
Fiber Pigtail
Parameter
Minimum
Maximum
Units
Fiber Pigtail Length
1000
mm
Spot Size (Mode Radius)
4.5
5.5
m
Cladding Diameter
122
128
m
Core/Cladding Concentricity
1
m
Secondary Jacket Diameter
0.8
1
mm
Effective Cutoff Wavelength
1150
1240
nm
Reliability Target
Parameter
Condition
Min.
Max.
Units
Median Life
50% inc. in total drive current, Tc = +25
C
2x10
5
hours
Other Documentation
SMQW Laser Diode Reliability Datasheet
Publication number 5965-1293E
LST282X/LST292X/LST3821/LST3921
Interim Qualification Report
Publication number 5965-5374E
523
H
N
I
L
M
F
K
G
P PIN DIAMETER
R
J
Q
B
C
O
A
D
MIN.
TYP.
MAX.
11.8
2.4
12.5
7.4
17.0
3.7
12.2
2.6
12.9
A
B
C
D
E
F
MIN.
TYP.
MAX.
12.0
2.1
5.3
2.0
1000
20.0
2.3
G
H
I
J
K
L
DIM.
DIM.
MIN.
TYP.
MAX.
0.4
0.9
5.3
2.0
0.5
1.25
0.5
M
N
O
P
Q
R
DIM.
E
LST3X21 Specification
All dimensions in mm.
Example of LST2X2X
All dimensions in mm.
FUNCTION
MONITOR ANODE (-VE)
MONITOR CATHODE (+VE)
LASER CATHODE (-VE)
LASER ANODE (+VE)
1
2
3
4
PIN
4
1
3
2
CASE
LASER
LST2X25
PHOTODIODE
2
PHOTODIODE
LASER
1
4
3
CASE
FUNCTION
LASER CATHODE (-VE)
MONITOR CATHODE (+VE)
MONITOR ANODE (-VE)
LASER ANODE (+VE)
1
2
3
4
PIN
LST2X27
LST2X25
LST2X27
PINOUT OPTIONS
524
A
B
C
D
H
TYP.
12.60
7.62
2.54
30.00
A
B
C
D
DIM.
4
3
2
1
5
6
7
8
C/L
E
PIN 1 INDICATOR
F
I
G
4
3
2
1
5
6
7
8
PHOTODIODE
LASER
CASE
FUNCTION
NO CONNECTION
MONITOR ANODE (-VE)
MONITOR CATHODE (+VE)
NO CONNECTION
NO CONNECTION
LASER CATHODE (-VE)
LASER ANODE (+VE)
1
2
3
4
5
6
7
PIN
(CONNECTED TO HEADER)
NO CONNECTION
8
TYP.
10.20
12.60
4.26
3.53
E
F
G
H
DIM.
NOTE:
PINS 1, 4, 5, AND 8 ARE ISOLATED
FROM THE INTERNAL CIRCUITRY,
BUT ARE ELECTRICALLY CONNECTED
TO EACH OTHER.
PINS 1, 4, 5, & 8 0.51 x 0.38 NOM.
PINS 2, 3, 6, & 7 0.4/0.5 DIA.
K
J
TYP.
2.54
8.60
3.20
1000
I
J
K
M
DIM.
OPTION 1
M
LST3X21 Specification
All dimensions in mm.