Sumitomo Electric Industries, Ltd.
Part No.:
SLT2270-LN Series
Document No.: HUW9924097-01B
Date of issue: February 24, 2000
999
Preliminary
Technical Specification
of
1.3µm MQW-DFB Laser Diode Module:
(Transmitter Optical Sub-assembly)
in Small PKG
( mini-TOSA)
SLT2270-LN Series
Sumitomo Electric Industries, Ltd.
Page 1 of 7
Sumitomo Electric Industries, Ltd.
Part No.:
SLT2270-LN Series
Document No.: HUW9924097-01B
Date of issue: February 24, 2000
999
1. General
SLT2270-LN Series is 1.3µm InGaAsP/InP MQW-DFB laser diode modules designed for fiber optic
communication systems. These modules are transmitter optical sub-assembly, and have low threshold
current and high performance at high temperature.
A laser diode is mounted into a 3.8mmφ coaxial package integrated with an InGaAs monitor PD, a
singe-mode fiber-stub and a split sleeve for 1.25mmφ connector.
This series are suitable for long-distance and up to 2.5Gbps transmitting applications.
2. Package dimension and pin assignment
(See attached drawing.)
3. Absolute maximum ratings (Tc=+25°C, unless otherwise noted.)
Parameter
Symbol Ratings
Storage temperature
Tstg
-40~+90
Operating case temperature
Top
-40~+85
Forward current (LD)
IfL
150
Reverse voltage (LD)
VrL
2
Reverse voltage (PD)
VrP
15
Reverse current (PD)
IrP
2
Soldering temperature (<10sec.) Stemp
260
Unit
°C
°C
mA
V
V
mA
°C
Page 2 of 7
Sumitomo Electric Industries, Ltd.
Part No.:
SLT2270-LN Series
Document No.: HUW9924097-01B
Date of issue: February 24, 2000
999
4. Electrical and optical characteristics
(Pf=1.5mW, SMF(9.5/125µm), Tc=+25°C, unless otherwise noted.)
Symbol
Condition
Ith CW
CW, Tc=-40~+85°C
Optical output power
Pf CW, If=Ith+20mA
CW, If=Ith+20mA, Tc=-40~+85°C
Operating voltage
Vf CW, Tc=-40~+85°C
Slope efficiency
Se CW, Average(Ith to Ith+20mA)
Peak wavelength
λp
CW
CW, Tc=-40~+85°C
Side-mode suppression ratio SSR CW, Tc=-40~+85°C
Tracking error
∆Pf
Im hold(@Pf=1.5mW(25°C))
CW, Tc=-40~+85°C
Rise time
tr
Ib=Ith, 20-80%, Tc=-40~+85°C
Fall time
tf
Ib=Ith, 80-20%, Tc=-40~+85°C
Extinction ratio
Er 10log(1.5mW/Pf(Ith))
Tc=-40~+85°C
Monitor current
Im CW, VrP=5V, Tc=-40~+85°C
Monitor dark current
Id VrP=5V
VrP=5V, Tc=-40~+85°C
Monitor capacitance
C VrP=5V, f=1MHz
Connector repeatability
— (*1)
Note: *1. Measured with SEI’s master plug and an extra receptacle.
Parameter
Threshold current
Min.
—
—
1.0
0.55
1.0
0.05
1300
1280
30
-1.5
—
—
10
50
—
—
—
—
Typ.
8
—
1.5
—
—
0.075
1310
—
—
—
—
—
—
—
1
—
—
±0.5
Max.
Unit
15
mA
50
—
mW
—
1.6
V
— mW/mA
1320
nm
1335
—
dB
1.5
dB
0.15
0.15
—
—
10
30
10
±1.0
nsec.
nsec.
dB
µA
nA
pF
dB
Page 3 of 7
Sumitomo Electric Industries, Ltd.
Part No.:
SLT2270-LN Series
Document No.: HUW9924097-01B
Date of issue: February 24, 2000
999
5. Ordering information
( See attached figure)
Part number
SLT2279-LN
SLT2270-LN
SLT2276-LN
6.Precaution
(1) Radiation emitted by laser devices can be dangerous to the eyes. Avoid eye or skin exposure to
direct or scattered radiation.
(2) The modules should be handled in the same manner as ordinary semiconductor devices to
prevent the electro-static damages. For safe keeping and carrying, the modules should be
packaged with ESD proof material. To assemble the modules on PCB, the workbench, the
soldering iron and the human body should be grounded.
(3) Please pay special attention to the atmosphere condition because the dew on the module may
cause some electrical damages.
.
Number
Of Pins
3
4
Pin Circle
Diameter
1.27±0.15mm
1.35±0.15mm
Pin length
7.0±0.5mm
Page 4 of 7
Sumitomo Electric Industries, Ltd.
Part No.:
SLT2270-LN Series
Document No.: HUW9924097-01B
Date of issue: February 24, 2000
999
Outline drawings ( unit: mm)
( Tolerance: +/- 0.1mm, unless otherwise described)
Lead Configurations
3-pin type
Pin No.
Pin Assignment
Type
SLT2279
1
Case, LD anode & PD cathode
2
LD cathode
3
PD anode
4-pin type
Pin No.
Pin Assignment
Type
SLT2270
1
Case, LD anode
2
LD cathode
3
PD cathode
4
PD anode
SLT2276
Type
1
Case
2
LD cathode
3
PD anode
4
LD anode & PD cathode
3-pin type
4-pin type
Page 5 of 7
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