
DATA SHEET
LASER DIODE
NDL7564P Series
InGaAsP STRAINED MQW DC-PBH PULSED LASER DIODE MODULE
1550nm OTDR APPLICATION
DESCRIPTION
NDL7564P Series is a 1550nm newly developed Strained Multiple Quantum Well (st-MQW) structure pulsed laser 
diode coaxial module with singlemode fiber. It is designed for light source of optical measurement equipment 
(OTDR).
FEATURES
x
Output power Pf = 40 mW @IFP = 400 mA
x
Long wavelength
x
Coaxial module without thermoelectric cooler.
x
Singlemode fiber pigtail
  Pulse Conditions: Pulse width (PW) = 10 Ps, Duty = 1 %
*1
C
 = 1550 nm
O
PACKAGE DIMENSIONS
NDL7564P NDL7564P1
Optical Fiber 
SM-9/125
Length : 1 m
φ
φ
6
φ
0.9
7
2520
φ
0.45
*1
in millimeters
Optical Fiber 
SM-9/125
Length : 1 m
2.22 – 
φ
φ
12.7
17.0
φ
0.9
φ
7
25
4
2
φ
20
6
0.45
P.C.D. =  2
Document No. P10476EJ4V0DS00 (4th edition) 
Date Published October 1996 N 
Printed in Japan
φ
1
PIN CONNECTIONSPIN CONNECTIONS
4
3
2
7
φ
21
LD
CASE
P.C.D. =  2
φ
4
3
1
2
3.7
7.2
1
CASE
The information in this document is subject to change without notice.
21
LD
1995©
 

ORDERING INFORMATION
Part Number Available Connector Flange Type 
NDL7564P Without Connector no flange 
NDL7564PC With FC-PC Connector 
NDL7564PD With SC-PC Connector 
NDL7564P1 Without Connector flat mount flange 
NDL7564P1C With FC-PC Connector 
NDL7564P1D With SC-PC Connector
ABSOLUTE MAXIMUM RATINGS (TC = 25 qqqqC)
Parameter Symbol Ratings Unit 
Pulsed Forward Current 
Reverse Voltage V 
Operating Case Temperature T 
Storage Temperature T 
Lead Soldering Temperature (10 sec) T
*1
FP
I
R
C
stg
sld
NDL7564P Series
600 mA
2.0 V
ð20 to +60 qC 
ð40 to +85 qC
260 qC
  Pulse Condition: Pulse Width (PW) = 10 
*1
s, Duty = 1 %
P
ELECTRO-OPTICAL CHARACTERISTICS (TC = 25 qqqqC)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Forward Voltage V
Threshold Current I 
Optical Output Power from Fiber P
RMS Center Wavelength O
FP
th
f
C
IFP = 400 mA, 
PW = 10 
P
s, Duty = 1 %
IFP = 400 mA, 
PW = 10 
P
s, Duty = 1 %
IFP = 400 mA, 
PW = 10 
P
s, Duty = 1 %
RMS Spectral Width V IFP = 400 mA,
Rise Time t 
Fall Time t
PW = 10 
r
10 - 90 % 1.0 ns
f
90 - 10 % 1.0 ns
P
s, Duty = 1 %
ELECTRO-OPTICAL CHARACTERISTICS (TC = 0 to +60qqqqC)
Parameter Symbol Conditions MIN. TYP. MAX. Unit 
Threshold Current I 
Optical Output Power from Fiber P
RMS Center Wavelength O
Temperature Dependency of 
Center Wavelength
RMS Spectral Width V IFP = 400 mA,
th
f
IFP = 400 mA,
C
PW = 10 
IFP = 400 mA,
PW = 10 
P
s, Duty = 1 %
P
s, Duty = 1 %
'O/'T0.35nm/qC
PW = 10 
P
s, Duty = 1 %
2.5 4.0 V
40 50 mA
20 40 mW
1530 1550 1570 nm
6.0 10.0 nm
75 mA
10 mW
1520 1585 nm
10 nm
2
 

NDL7564P Series
OPTICAL OUTPUT POWER FROM FIBER vs. 
LD PULSE FORWARD CURRENT
50
PW = 10  s
µ
 (mW)
f
Optical Output Power from Fiber P
Duty = 1 %
40
30
20
10
0
Pulsed Forward Current I
FP
25 ˚C
 (mA)
60 ˚C
LONGITUDINAL MODE (FROM FIBER)
Relative Intensity (Linear Scale)
Wavelength   (nm)
1550
λ
5 nm/div100 200 300 400
3
 

LASER DIODE FAMILY FOR OTDR APPLICATION
NDL7564P Series
Features 1.31 Pm 1.55 Pm
Package
I
5.6 CAN NDL7103 290/320 NDL7153 220/240 1000
4 pin Coaxial Module with SMF NDL7503P/P1 110/180 NDL7553P/P1 95/145 1000
14 pin DIP Module with SMF NDL7502P 125/190 NDL7552P 100/125 1000
  Pulse conditions: pulse width = 10 
*1
Part Number
NDL7113 160/175 NDL7163 100/120 400
NDL7513P/P1 70/110 NDL7563P/P1 60/80 400 
NDL7514P/P1 25/50 NDL7564P/P1 20/40 400 
NDL7515P/P1 20/30 NDL7565P/P1 8/11 400
NDL7512P 90/110 NDL7562P 70/80 400 
NDL7510P 40/55 NDL7560P 20/30 400
P (mW)
MIN./TYP.
s, duty = 1 % (modules)
P
Part Number
P (mW)
MIN./TYP.
FP
I
(mA)
pulse width = 1 Ps, duty = 1 % (I5.6 can)
*1
Remarks
P : no flange 
P1 : with flange
with TEC and 
Thermistor
4
 

NDL7564P Series
REFERENCE
Document Name Document No. 
NEC semiconductor device reliability/quality control system LEI-1201 
Quality grades on NEC semic onductor devices C11531E 
Semiconductor device mounting technology manual C10535E 
Guide to quality assurance for semiconductor devic es MEI-1202 
Semiconductor selection guide X10679E
5
 

NDL7564P Series
CAUTION
Within this module there exists GaAs (Gallium Arsenide) material which is a harmful 
substance if ingested. Please do not under any circumstances break the hermetic seal.
NEC Corporation
DANGER
SEMICONDUCTOR LASER
INVISIBLE LASER RADIATION 
AVOID DIRECT EXPOSURE TO BEAM
OUTPUT POWER     mW MAX 
WAVELENGTH            nm 
CLASS lllb LASER PRODUCT
The export of this product from Japan is prohibited without governmental license. To export or re-export this product from 
a country other than Japan may also be prohibited without a license from that country. Please call an NEC sales 
representative.
No part of this document may be copied or reproduced in any form or by any means without the prior written 
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this 
document. 
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual 
property rights of third parties by or arising from use of a device described herein or any other liability arising 
from use of such device. No license, either express, implied or otherwise, is granted under any patents, 
copyrights or other intellectual property rights of NEC Corporation or others. 
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices, 
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or 
property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety 
measures in its design, such as redundancy, fire-containment, and anti-failure features. 
NEC devices are classified into the following three quality grades: 
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on 
a customer designated "quality assurance program" for a specific application. The recommended applications 
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each 
device before using it in a particular application.
  Standard: Computers, office equipment, communications equipment, test and measurement equipment, 
           audio and visual equipment, home electronic appliances, machine tools, personal electronic 
           equipment and industrial robots 
  Special:  Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster 
          systems, anti-crime systems, safety equipment and medical equipment (not specifically designed 
           for life support) 
  Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life 
          support systems or medical equipment for life support, etc. 
The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. 
If customers intend to use NEC devices for applications other than those specified for Standard quality grade, 
they should contact an NEC sales representative in advance. 
Anti-radioactive design is not implemented in this product. 
AVOID EXPOSURE-Invisible 
Laser Radiation is emitted from 
this aperture
NEC Building, 7-1, Shiba 5-chome, 
Minato-ku, Tokyo 108-01, Japan
Type number: 
Manufactured: 
Serial Number: 
This product conforms to FDA 
regulations as applicable 
to standards 21 CFR Chapter 1. 
Subchapter J.
M4 96. 5