Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 1 of 7
Technical Specification
of
1.51µm MQW-DFB Laser Diode Module:
for up to 622Mb/s transmission
SLT4400-xx-S850 Series
RoHS Compliant
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 2 of 7
1. General
SLT4400-xx-S850 Series are 1.51µm InGaAsP/InP MQW-DFB laser diode modules designed for fiber
optic communication systems. This module is ideally suitable for long reach and intermediate reach of
up to 622Mb/s transmission applications.
A laser diode is mounted into a coaxial package integrated with an InGaAs monitor PD and a single
mode fiber pigtail.
2. Package dimension and pin assignment
(See attached appendix.)
3. Absolute maximum ratings
Parameter Symbol Ratings Unit
Storage temperature Tstg -40~+85 °C
Operating case temperature Top -40~+85 °C
Fiber output power Pf 10 mW
Forward current (LD) IfL 150 mA
Reverse voltage (LD) VrL 2 V
Reverse voltage (PD) VrP 15 V
Reverse current (PD) IrP 2 mA
Soldering temperature (<10s) Stemp 260 °C
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 3 of 7
4. Electrical and optical characteristics (Pf=2.0mW, Tc=+25°C, unless otherwise noted.)
Parameter Symbol Condition Min. Typ. Max. Unit
Threshold current Ith CW — 10 20 mA
CW, Tc=-40~+85°C — — 50
Optical output power Pf CW, If=Ith+20mA 1.0 2 2.5 mW
CW, If=Ith+20mA, Tc=-40~+85°C 0.6 — 4.0
Operating voltage Vf CW, Tc=-40~+85°C — — 1.7 V
Slope efficiency Se CW, Average(Ith to Ith+20mA)
0.050 — 0.125 mW/mA
CW, Average(Ith to Ith+20mA)
Tc=-40~+85°C 0.030 — 0.200
Peak wavelength λp CW 1505 1510 1515 nm
CW, Tc=-40~+85°C 1498 — 1522
Side-mode suppression ratio SSR CW, Tc=-40~+85°C 30 — — dB
Tracking error ∆Pf Im hold(@Pf=2.0mW(25°C)), CW
Tc=-40~+85°C -1.0 — 1.0 dB
Rise time tr Ib=Ith, 20-80%, Tc=-40~+85°C — 0.05 0.10 ns
Fall time tf Ib=Ith, 80-20%, Tc=-40~+85°C — 0.10 0.15 ns
Extinction ratio Er 10log(2.0mW/Pf(Ith)),
Tc=-40~+85°C 10 — — dB
Monitor current Im CW, VrP=5V, Tc=-40~+85°C 50 — 1500 µA
Monitor dark current Id VrP=5V — 1 10 nA
Monitor capacitance C VrP=5V, f=1MHz — — 10 pF
Note: Since the SLT4400-xx-S850 Series have no optical isolator inside, to integrate externally an optical
isolator is recommended for long reach of transmission applications.
5. Fiber pigtail specification
Parameter Min. Typ. Max. Unit
Type Single Mode —
Mode field diameter@1310nm 8.5 9.5 10.5 µm
Cladding diameter 122 125 128 µm
Outer jacket diameter 0.8 0.9 1.0 mm
Bending radius 30 — — mm
6. Ordering Information
Part Number for
RoHS compliance Pin
assignment Optical
isolator Connector
type Flange type
(hole pitch) Old
Part number RoHS compliance of
old part number
SLT4400-CN/RH1-S850
Type A No isolator
SC/PC Flangeless SLT4400-CN-S850
Not Compliant
(*2)
SLT4400-CP/RH1-S850 Vertical (12mm) SLT4400-CP-S850
SLT4400-CS/RH1-S850 Horizontal (12.7mm) SLT4400-CS-S850
SLT4400-XN-S850 No
connector
Flangeless SLT4400-XN-S850
Compliant
SLT4400-XP-S850 Vertical (12mm) SLT4400-XP-S850
SLT4400-XS-S850 Horizontal (12.7mm) SLT4400-XS-S850
Note:*2. Some products in this category have been already RoHS compliant.
If any query, please contact us with part number and serial number.
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 4 of 7
7. 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) The stress to the fiber pigtail may cause the damage on the performance. The fiber pigtail may
snap off by dropping the module.
(4) Please pay special attention to the atmosphere condition because the dew on the module may
cause some electrical damages.
(5) Under such a strong vibration environment as in automobile, the performance and reliability are
not guaranteed.
8. RoHS Compliancy
On January 27, 2003, the European Parliament and the Council of the European Union issued the
directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and
electronic equipment (RoHS).
Member States shall ensure that, from July 1, 2006, new electrical and electronic equipment put on
the market does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls
(PBB) or polybrominated diphenyl ethers (PBDE).
Applications listed in the Annex are exempted.
This product is compliant with RoHS 6/6 directive with exemptions “Lead in glass of cathode ray tubes,
electronic components and fluorescent tubes” and “Lead as an alloying element in steel containing up
to 0.35 % lead by weight, aluminium containing up to 0.4 % lead by weight and as a copper alloy
containing up to 4 % lead by weight”.
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 5 of 7
Appendix
Part No. : SLT440□-□□/□□□-S850
(Customize code)
Code Connector Type
CSC/PC
DFC/PC
LLC/PC
X No Connector
Code Pin Assig nment
0 Type A
1 Type B
6 Type C
Pin No. Pin Function
for Type C
1 (CASE)
2 LD Cathode
3 PD Anode
4LD Anode /
PD Cathode
Pin No. Pin Function
for T ype A & B
1 LD Anode(CASE)
2 LD Cat hode
3PD Cathode
4 PD Anode
Connector type Flange type Pin assignment
Code Flange Type
N Flangeless
P Vertical (12.0mm)
S Horizontal (12.7mm)
X (Customized)
8
±
0.3
8±0.3
12.7
17±0.3
2-φ2.4
4
12 min.
30
±
1
Horizontal flange
1.0
11 min.2.5
φ4.5
12
18 ± 0.2
φ 7.2
2-φ2.2
30
±
1
Vertical flange
30
±
1
φ (5.7)
φ 6.5
12 min.
4-φ0.45
P.C.D. 2±0.5
φ6.5
Flangeless
1
2
3
4
Type A
1
4
3
2
Type B
1
2
3
4
Type C
1
2
3
4
Type A
1
2
3
4
Type C
Type C
1
2
3
4
1
2
3
4
Type A
2
1
4
3
Type B
770 min
700 min
No connector
770 min
FC/PC connector (*1)
SC/PC connector (*1)
8
φ 0.9
Unit: mm
Tolerance ±0.1mm, unless otherwise noted.
770 min
LC/PC connector (*1)
Note: *1. IEC and JIS compliant. Detailed design not specified in the IEC and JIS
standards is a subject to change without notice.
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 6 of 7
9. For More Information
U.S.A.
ExceLight Communications Inc.
4021 Stirrup Creek Drive, Suite 200, Durham NC, 27703
U.S.A.
Tel. (919) 361-1600
Fax. (919) 361-1619
E-mail: info@excelight.com
URL: http://www.excelight.com
Europe
Sumitomo Electric Europe Ltd.
220 Centennial Park, Centennial Avenne, Elstree, Herts, WD6 3SL
United Kingdom
Tel. (020) 8953-8118
Fax. (020) 8207-5950
URL: http://www.sumielectric.com
Japan
Sumitomo Electric Industries, Ltd. (Opto-electronic Products Sales Div.)
3-12, Moto-Akasaka 1-chome, Minato-ku Tokyo, 107-8468
Japan
Tel. (03) 3423-5031
Fax. (03) 3423-5247
E-mail: product_info@ppd.sei.co.jp
URL: http://www.sei.co.jp/Electro-optic/index_e.html
Sumitomo Electric Industries, Ltd.
Part No.: SLT4400-xx-S850 Series
Document No.: HUW9824071-01K
Date of issue: February 28, 2008
Page 7 of 7
Revision Record
Document No. Date of issue Description Incorporated by Checked by Approved by
HUW9824071-01A Jan./08/99 Initial issue. T. Nakanishi T. Nakabayashi T. Fujitani
HUW9824071-01B May/21/99 Revised part number from
SLT4410-xx-S850 Series to
SLT4400-xx-S850 Series;
Removed the description on
2.5Gb/s.
T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01C Jul./24/99 Removed the section of an optical
isolator specification. T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01D Jan./13/00 Added “@1310nm” to the
description of the mode field
diameter in the section 5.
T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01E May/24/00 Revised part number from
SLT4400-xx-S850 Series to
SLT4410-xx-S850 Series;
Revised Pf on condition of
-40~+85°C from max.: 3mW to
max.: 4mW;
Corrected bending radius from
min.: 40mm to min.: 30mm;
Corrected the optical isolation on
condition of Tc=-40~+85°C from
25dB to 20dB;
Corrected tolerance of the
horizontal flange;
Changed the vertical flange
design.
T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01F May/26/00 Corrected part number from
SLT4410-xx-S850 Series to
SLT4400-xx-S850 Series.
T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01G Jun./15/00 Corrected Se on condition of
Tc=-40~+85°C from 0.015mW/mA
to 0.020mW/mA.
T. Nakanishi M. Yoshimura T. Fujitani
HUW9824071-01H Aug./09/01 Corrected Tstg from
Tc=-40~+90°C to Tc=-40~+85°C;
Added the absolute maximum
ratings of Pf.
T. Nakanishi K. Ojima M. Yoshimura
HUW9824071-01I Sep./22/03 Added LC/ PC connector
specification. T. Kounosu M. Furumai
Y. Yamasaki M. Yoshimura
HUW9824071-01J Aug./09/06 Added RoHS compliancy. Y. Yamasaki N. Fukushima
T. Kounosu M. Yoshimura
HUW9824071-01K Feb./28/08 Removed SLT4460-xx-S850
series.
Changed the wording of RoHS
Compliancy.
N. Fukushima T. Takagi
Y. Yamasaki
H. Michikoshi
