48
GH20707A2A/GH20707A2B
Laser Diodes
Notice
In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
Internet
Internet address for Electronic Components Group http://www.sharp.co.jp/ecg/
1
Case temperature
2
At the position of 1.6mm or more from the lead base (Within 3s)
Parameter
Symbol
Unit
Reverse voltage
V
rd
1
Storage temperature
T
stg
C
2
Soldering temperature
T
sld
C
Optical power output
P
O
7
mW
Monitor photodiode
Laser
V
rl
V
1
Operating temperature
T
op(c)
C
Rating
7
2
30
-10 to +70
-40 to +85
300
Red laser
Infrared laser
V
s
Absolute Maximum Ratings
(T
C
=25C
1
)
GH20707A2A/GH20707A2B
s
Features
(1) Dual-wavelength type
With 2-laser chips for CD-ROM and for DVD-ROM
(2) Wavelength : TYP. 788nm/654nm
(3) Maximum optical power output : 7mW/7mW
(4) Operating temperature : MAX. 70C
(5)
5.6mm package
s
Model No.
(1)
GH20707A2A
....Dual power supply
(2)
GH20707A2B
....Single power supply
s
Applications
(1) DVD-ROM drives
(2) DVD video
(3) CD-ROM drives
s
Outline Dimensions
Dual-wavelength(1 Package) Laser Diode for
DVD-ROM/DVD Video(654nm-7mW, 788nm-7mW)
(Unit : mm)
90
2
2
Reference plane
Emission point
Z=1.27
0.08
0.4
0.1
2
2
3
4
1
0.4
0.1
Tolerance
0.2mm
No cap glass
3.55
0.1
0.5 MIN.
5.6
+
0
0.025
+
0.1 0.2
4.4 MAX.
0.5 MAX.
2.3
0.5
1.2
0.1
6.5
1.0
1.8
1
2
Y
Z
X
Terminal connection
q
w
e
r
GND
Red laser
Monitor PD
Infrared laser
q
w
e
r
GND
Red laser
Monitor PD
Infrared laser
1 : Dimension measured at lead
base
2 : Within 0.6mm from reference
plane
GH20707A2A
GH20707A2B
49
GH20707A2A/GH20707A2B
Laser Diodes
s
Electro-optical Characteristics
1
(T
C
=25C)
Parameter
Symbol
Unit
Threshold current
I
th
45
mA
Half intensity
angle
23
Parallel
//
13.7
49
4
Ripple
R
l
20
%
Misalignment
angle
2
1
Initial value, CW (Continuous Wave) drive
2
Angle at 50% peak intensity (full-width at half-
maximum)
3
Parallel to junction plane (X-Z plane), Perpendicular to the junction plane (Y-Z plane)
4
R
l
=
P/P
P : the maximum deviation of the far field pattern from its approximate
curve P : the peak of the approximate curve
Red laser
-
-
23
7
8.5
23
Perpendicular
25
29
-
-
-
-
Operating current
I
op
Po=5mW
-
33
60
mA
Operating voltage
V
op
-
2.2
2.3
V
Wavelength
p
640
654
793
nm
3
Parallel
//
-
-
1.5
3
Perpendicular
Differential efficiency
d
3mW
I(5mW)-I(2mW)
0.3
0.55
0.57
mW/mA
Interference pattern intensity
Po=5mW
-
-
0.99
-
Infrared laser
35
-
34
49
Po=5mW
47
2.7
1.9
660
788
10
11
35
34
20
-
1.5
-
2
-
0.8
5mW
I(5mW)-Ith
0.38
1
Po=5mW
-
Conditions
MIN.
TYP.
MAX.
Conditions
TYP.
MAX.
MIN.
-
-
-
783
8.8
28
-
-
-
0.14
-
Parameter
Symbol
Unit
Output current
I
m
1.2
mA
Red laser
Po=5mW
V
rd
=5V
0.05
0.14
Dark current
I
D
V
rd
=5V
-
-
150
nA
Infrared laser
0.25
Po=5mW
V
rd
=5V
0.75
150
V
rd
=5V
-
Conditions
MIN.
TYP.
MAX.
Conditions
TYP.
MAX.
MIN.
0.35
-
s
Electrical Characteristics of Photodiode
(T
C
=25C)
Distance between laser emission points
Unit :
m
s
Distance between Laser Emission Points and Emission Point Accuracy
L
TYP. 110
10
dX
MAX. 119.7
TYP. 104.5
MIN. 76
dY
TYP. 34.2
dZ
TYP. 0
5
Emission point accuracy
X
Y
80
Z
80
80
Emission point
of red laser
=
Center of
the stem
Emission point of infrared laser
dY
dX
L
Y
X
Reference plane
Emission point of red laser
C
L
Emission point of infrared laser
dZ
Z
115
Application Circuits
NOTICE
qThe circuit application examples in this publication are provided to explain representative applications of
SHARP devices and are not intended to guarantee any circuit design or license any intellectual property
rights. SHARP takes no responsibility for any problems related to any intellectual property right of a
third party resulting from the use of SHARP's devices.
qContact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
SHARP reserves the right to make changes in the specifications, characteristics, data, materials,
structure, and other contents described herein at any time without notice in order to improve design or
reliability. Manufacturing locations are also subject to change without notice.
qObserve the following points when using any devices in this publication. SHARP takes no responsibility
for damage caused by improper use of the devices which does not meet the conditions and absolute
maximum ratings to be used specified in the relevant specification sheet nor meet the following
conditions:
(i) The devices in this publication are designed for use in general electronic equipment designs such as:
--- Personal computers
--- Office automation equipment
--- Telecommunication equipment [terminal]
--- Test and measurement equipment
--- Industrial control
--- Audio visual equipment
--- Consumer electronics
(ii)Measures such as fail-safe function and redundant design should be taken to ensure reliability and
safety when SHARP devices are used for or in connection with equipment that requires higher
reliability such as:
--- Transportation control and safety equipment (i.e., aircraft, trains, automobiles, etc.)
--- Traffic signals
--- Gas leakage sensor breakers
--- Alarm equipment
--- Various safety devices, etc.
(iii)SHARP devices shall not be used for or in connection with equipment that requires an extremely
high level of reliability and safety such as:
--- Space applications
--- Telecommunication equipment [trunk lines]
--- Nuclear power control equipment
--- Medical and other life support equipment (e.g., scuba).
qContact a SHARP representative in advance when intending to use SHARP devices for any "specific"
applications other than those recommended by SHARP or when it is unclear which category mentioned
above controls the intended use.
qIf the SHARP devices listed in this publication fall within the scope of strategic products described in the
Foreign Exchange and Foreign Trade Control Law of Japan, it is necessary to obtain approval to export
such SHARP devices.
qThis publication is the proprietary product of SHARP and is copyrighted, with all rights reserved. Under
the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any
means, electronic or mechanical, for any purpose, in whole or in part, without the express written
permission of SHARP. Express written permission is also required before any use of this publication
may be made by a third party.
qContact and consult with a SHARP representative if there are any questions about the contents of this
publication.
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