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155/622 Mb/s SMQW Pigtailed Laser Modules Technical Data
LST2525 - 200 W Coaxial Laser LST2825 - 1 mW Coaxial Laser LST3521 - Sugar Cube Package LST3821 - Sugar Cube Package HFCT-3002 - 8 Pin DIL Package HFCT-3012 - 8 Pin DIL Package Description
Products in the SMQW pigtailed laser module family consist of either a coaxial style, 8 pin "sugar cube", or an 8 pin DIL package 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 Fabry Perot 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.
Features
* 3 Package Outlines * Strained Multi Quantum Well (SMQW) Fabry Perot laser chip * Low threshold and operating current * Wide Operating Temperature Range * Optical Power up to 1 mW * Modulation Capability up to 622 Mb/s
Applications
* * * * * * Telecommunications Fiber in the loop Inter/lntra Office SONET/SDH Datacommunications Switches
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. A reference transmitter design board HFCT-3000 is available for evaluating the basic performance of the 8 pin DIL package.
Laser Safety Warning This device is a Class IIIa (3a) 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.
2
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.
Parameter Laser Forward Current Laser Reverse Voltage Photodiode Reverse Voltage Photodiode Forward Current Operating Temperature Storage Temperature Relative Humidity Fiber Pull Strength Mechanical Shock Vibration
Symbol If Vlr Vr Ipf Tc Ts RH
Test Condition DC DC DC DC Temperature measured at case
Limits Min. Max. 120 2 20 1 +85 +85 10 500 20
Unit mA V V mA C C %RH N G G
-40 -40
noncondensing
Three times; 10 sec. MIL-STD-883E, Method 2002, Condition A MIL-STD-883E, Method 2007, Condition A
Performance Specifications
LST2525 LST3521 HFCT-3002A Min. Max. LST2825 LST3821 HFCT-3012A Min. Max.
Parameter LASER
Symbol
Test Condition CW, Tc = -40C to +85C, Po as noted below unless otherwise stated Tc = ranges specified above, CW Tc = +25C If = Ith - 2 mA Tc = +25C Tc = +25C Tc = -40C to +85C
Unit
Rated optical power Threshold current Threshold current Coupled Power in "Off" state Slope efficiency Drive current above Ith, for Im = Im (Po, +25C) Forward voltage - LST Forward voltage - HFCT Centre wavelength Wavelength/temperature coefficient Spectral width Rise and fall time
Po Ith Ith Pth Id Vf /T
0.2 3.5 1.5 10 30 12 16 20 33.3 1.6 3.0 1336 1360 0.4 2.5 380
1 3.5 1.5 10 30 12 100 20 33.3 1.6 3.0 1336 1360 0.4 2.5 380
mW mA mA W W/mA mA mA V V nm nm nm/C nm ps
10 12.5 10
50 10 7.5
Tc = +25C Tc = -40C to +85C
1286 1260
1286 1260
One sigma, RMS 10 - 90%, Ith to Po
3
Performance Specifications (Continued)
LST2525 LST3521 HFCT-3002A Min. Max. LST2825 LST3821 HFCT-3012A Min. Max.
Parameter
Symbol
Test Condition
Unit
MONITOR PHOTODIODE Photocurrent Dark current Capacitance - LST Capacitance - HFCT Tracking Error Rise and fall time
Tc = +25C Vr = 5 V, Po = Rated Power Im Id C R r 200 Po = 0 W 1 MHz Im = Im (Po, +25C) Tc + -40C to +85C 10 - 90%, Ith to Po 1000 20 10 20 1 2 200 1000 20 10 20 1 2 A nA pF pF dB ns
Fiber Pigtail
Parameter Fiber Pigtail Length Spot Size (Mode Radius) Cladding Diameter Core/Cladding Concentricity Secondary Jacket Diameter Effective Cutoff Wavelength Minimum 1000 4.5 122 0.8 1150 Maximum 5.5 128 1 1 1240 Unit mm m m m mm nm
Reliability
Parameter Median Life Condition 50% inc. in total drive current, Tc = +25C Minimum 2 x 10^5 Maximum Unit hours
Other documentation
SMQW Laser Diode Reliability Datasheet LST282X/LST292X/LST3821/LST3921 Qualification Report HFCT-3xxx Application Note 1169 Characterization Report Interim Qualification Report Publication number 5965-1293E Publication number 5965-8894E Publication number 5968-4808E Available April, 1999 Publication number 5968-3019E
4
Example of LST2x25 - All dimensions in mm.
A I H K M G B C O F N
Q E D P - Pin diameter J R L
Dimension A B C D E F
Min. Typ. Max. 7.4 17 11.8 3.7 2.4 12.5 2.6 12.9 12.2
Dimension G H I J K L
Min. Typ. Max. 12 20 5.3 2 2.1 1000 2.3
Dimension M N O P Q R
Min. Typ. Max. 0.9 5.3 2 0.4 0.5 1.25 0.5
CASE 4 LASER
1 PHOTODIODE
Pin 1 2 3 4
LST2x25 Function Monitor Anode (-ve) Monitor Cathode (+ve) Laser Cathode (-ve) Laser Anode (+ve)
3
2
LST2x25
5
LST3x21 Specification - All dimensions in mm.
D L
4 A BC 3 2 1
5 6 7 8 J K C/L
Pin 1 Indicator
F
E
G I H
Case 4 PHOTODIODE 3 2 1 5 LASER 6 7 8
Option 1
Dimension A B C D E F
Typical 12.60 7.62 2.54 30.00 10.20 12.60
Dimension G H I J K L
Typical 4.26 3.53 2.54 8.60 3.20 1000
Function No connection Monitor Anode (-ve) Monitor Cathode (+ve) No connection No connection Laser Cathode (-ve) Laser Anode (+ve) 7 (Connected to header) 8 No connection Note: Pins 1, 4, 5 8 are isolated from the internal circuitry, but are electrically connected to each other. Pins 1, 4, 5 & 8 - 0.51 x 0.38 nominal Pins 2, 3, 6 & 7 - 0.4/0.5 diameter
Pin 1 2 3 4 5 6
6
HFCT-30x2 Specification - All dimensions in mm.
A
B
Pin 1 N J KL M H
F
Pin 1
G
D ALL DIMENSIONS SHOWN 'NOMINAL' C E Q
P
Dimension Typical Dimension Typical Dimension Typical A B C D E 16.2 18.2 7.62 0.5 2.75 F G H J K 6.7 4.6 0.5 1000 5.3 L M N P Q 0.9 3.6 10.0 0.25 7.62
Note: These dimensions are subject to minor changes.
Pin Function 1 Not connected 2 Package ground* 3 Not connected 4 Photodiode Cathode (+) 5 Photodiode Anode (-) 6 Laser Cathode (-) 7 Laser Anode (+) 8 Package ground* Note: For single pin ground connection please use pin 2
7
Ordering Information
Coaxial Package
LST2x25-x-xx
Connector Type: Blank = No Connector FP = FC/PC SC = SC ST = ST(R) DN = DIN (4106.66) Flange: B = Without mounting flange T = Universal flange Power: 5 = 200 W 8 = 1 mW
Available options: LST2525-B LST2525-B-FP LST2525-B-SC LST2525-B-ST LST2525-B-DN LST2525-T LST2525-T-FP LST2525-T-SC LST2525-T-ST LST2525-T-DN
LST2825-B LST2825-B-FP LST2825-B-SC LST2825-B-ST LST2825-B-DN LST2825-T LST2825-T-FP LST2825-T-SC LST2825-T-ST LST2825-T-DN
Dual-in-Line Packages
LST3x21-xx
Connector Type: Blank = No Connector FP = FC/PC SC = SC ST = ST(R) DN = DIN (4106.66) Power: 5 = 200 W 8 = 1 mW LST3521 LST3521-FP LST3521-SC LST3521-ST LST3521-DN LST3821 LST3821-FP LST3821-SC LST3821-ST LST3821-DN
HFCT-30x2Axx
Connector Type: Blank = No Connector FP = FC/PC SC = SC ST = ST(R) DN = DIN (4106.66) Power: 0 = 200 W 1 = 1 mW
HFCT-3002A HFCT-3002AFP HFCT-3002ASC HFCT-3002AST HFCT-3002ADN
HFCT-3012A HFCT-3012AFP HFCT-3012ASC HFCT-3012AST HFCT-3012ADN
ST(R) is a Registered Trademark of AT&T
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Laser Warning
DANGER
Invisible LASER Radiation Avoid direct exposure to beam Peak power 16 mW Wavelength 1300 nm Class III a LASER product
www.hp.com/go/fiber For technical assistance or the location of your nearest Hewlett-Packard sales office, distributor or representative call:
CDRH Certification
Hewlett-Packard Ltd. Whitehouse Road Ipswich, Suffolk IP1 5PB England Manufactured: Model No: Serial No:
Americas/Canada: 1-800-235-0312 or 408-654-8675 Far East/Australasia: Call your local HP sales office. Japan: (81 3) 3335-8152 Europe: Call your local HP sales office. Data subject to change.
If the drive current is limited to less than 90 mA then the product is Class 1 (IEC825-1)
Copyright (c) 1999 Hewlett-Packard Co. Obsoletes: 5968-3377E 5968-4809E (3/99)
This product conforms to the applicable requirements of 21 CFR 1040 at the date of manufacture

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