Preliminary Data
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
850nm 20mW CW
Laser
Diode
L7650
FEATURES:
Output Power 20mW CW
Emitting Area 6m x 1m
Peak Emission Wavelength 850nm +/- 10nm
Semi-Single Mode
Monitor Photodiode Inside
High Stability
Long Life
Compact
Unit: mm
APPLICATIONS:
Printing
Measuring Instrument
Optical Spatial Transmission
ABSOLUTE MAXIMUM RATINGS
(Top(c)=25)
Parameter
Symbol
Value
Unit
Radiant Output Power
e
30
mW
Reverse Voltage
V
R
1.5
V
Operating Temperature
Top
(c)
-10 to +70
Storage Temperature
Tstg
-20 to +80
ELECTRICAL AND OPTICAL CHARACTERISTICS
(Top
(c)
=25)
Value
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Forward Operating Current
I
F
e
=20mW
- 70 100 mA
Forward Operating Voltage
V
F
e
=20mW - 1.7 2.2 V
Peak Emission Wavelength
p
e
=20mW
840 850 860 nm
Monitor Current
Im
e
=20mW
0.07 0.4 1 mA
//
5
7
12
degree
Beam Spread Angle : Parallel
: Vertical
e
=20mW
FWHM
22 27 32
degree
Lasing Threshold Current
Ith
-
-
40
60
mA
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein.
850nm 20mW CW Laser Diode L7650
http://www.hamamatsu.com
Mar. 2003
HAMAMATSU PHOTONICS K.K. Laser Group, Sales Dept.
(Rev. 01)
5000, Hirakuchi, Hamakita City, Shizuoka, Japan
Telephone: (81)53-584-0227, Fax: (81)53-584-0228, e-mail: laser-g@lsr.hpk.co.jp
INSTRUCTIONS FOR SAFETY USE
1. Heat dissipation
Reliability of this LD is deeply correlated with junction temperature. Under higher operating temperature, the reliability deteriorates soon. Heat dissipating device (material: Aluminum, Copper) should be
attached to the base of the LD, and cooling devices (air, water, peltier etc.) should be operated with the LD in order to dissipate the heat from the LD, so that the operating temperature is kept within the
absolute maximum ratings.
2. Safety for operators and users
This LD emits invisible laser radiation. It's classified into Class 3B according to the laser product standards of the IEC 60825-1 (Safety of laser products Part 1 : Equipment classification, requirements and
user's guide) and/or ANSI Z136.1 (American National Standard for Safe Use of Lasers) etc. Direct or reflected laser beam from this LD may damage eyes or skin by being absorbed by cell. The operator
must not stare the emitting area of LD, must avoid direct exposure to the laser beam.
PDF 
ZIP