GH20707A2A - Sharp Electronics Corp.

GH20707A2A/GH20707A2BLaser Diodes

Notice In t h e a b s e n c e o f c o n firmation 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://sharp-world.com/ecg/

❇1Case temperature

❇2At the position of 1.6mm or more from the lead base (Within 3s)

❇3CW (Continuous Wave) drive

Parameter Symbol Unit

Reverse voltage Vrd

❇1Storage temperature Tstg ˚C

❇2Soldering temperature Tsld ˚C

❇3Optical power output PO7mW

Monitor photodiode

Laser Vrl V

❇1Operating temperature Top(c) ˚C

Rating

-10 to +70

-40 to +85

300

Red laser Infrared laser

■Absolute Maximum Ratings (TC=25˚C ❇1)

GH20707A2A/GH20707A2B

■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 (CW)

(4) Operating temperature : MAX. 70˚C

(5) φ5.6mm package(4 - lead)

■Model No.

(1) GH20707A2A....Dual power supply

(2) GH20707A2B....Single power supply

■Applications

(1) DVD-ROM drives

(2) DVD video players

(3) CD-ROM drives

■Outline Dimensions

Dual-wavelength(1 Pac kage) Laser Diode for

DVD-ROM/DVD Video(654nm-7mW, 788nm-7mW)

(Unit : mm)

˚±2˚

❇2

Reference plane

Emission point

Z=1.27±0.08

0.4±0.1

ø2

0.4±0.1

Tolerance ±0.2mm

No cap glass

ø3.55±0.1 0.5 MIN.

ø5.6+

–0

0.025

–0.1

0.2

ø4.4 MAX.

0.5 MAX.

2.3±0.5

1.2±0.1

6.5±1.0 ø1.8

❇1

❇2

4 - ø0.45±0.1

Terminal connection

GND

Red laser

Monitor PDInfrared laser

GND

Red laser

Monitor PDInfrared laser

❇1 : Dimension measured at lead

base

❇2 : Within 0.6mm from reference

plane

GH20707A2A GH20707A2B

Notice In t h e a b s e n c e o f c o n firmation 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://sharp-world.com/ecg/

GH20707A2A/GH20707A2BLaser Diodes

■Electro-optical Characteristics❇1(TC=25˚C)

Parameter Symbol Unit

Threshold current Ith 45 mA

Half intensity

angle

❇2❇3

Parallel θ// 13.7 ˚

❇4Ripple Rl+20 %

Misalignment

angle

∆θ⊥ +2

❇1Initial value, CW (Continuous Wave) drive

❇2Angle at 50% peak intensity (full-width at half-

maximum)

❇3

Parallel to the junction plane (X-Z plane), Perpendicular to the junction plane (Y-Z plane)

❇4Rl=∆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

78.5

❇2❇3

Perpendicular

25 29

-20 -

-2 -

Operating current Iop

Po=5mW

-33 60mA

Operating voltage Vop -2.2 2.3V

Wavelength λp640 654 793 nm

θ⊥

❇3

Parallel ∆θ// -1.5 - +1.5 ˚

❇3

Perpendicular

Differential efficiency ηd3mW

I(5mW)-I(2mW) 0.3 0.55 0.57

mW/mA

Interference pattern intensity

αPo=5mW - - 0.99 -

Infrared laser

35 - 34

Po=5mW

2.7 1.9

660 788

10 11

35 34

+20 -

+1.5 -

+2-

0.8 5mW

I(5mW)-I(2mW) 0.38

1 Po=5mW -

Conditions MIN. TYP. MAX. Conditions TYP. MAX.MIN.

783

8.8

-20

-1.5

-2

0.14

Parameter Symbol Unit

Output current Im1.2 mA

Red laser

Po=5mW

Vrd=5V 0.04 0.2

Dark current IDVrd=5V - - 150 nA

Infrared laser

0.4 Po=5mW

Vrd=5V 0.65

150 Vrd=5V -

Conditions MIN. TYP. MAX. Conditions TYP. MAX.MIN.

0.3

■Electrical Characteristics of Photodiode (TC=25˚C)

Distance between laser emission points Unit : µm

■Distance between Laser Emission Points and Emission Point Accuracy

Red laser emission point accuracy Unit : µm

∆X

∆Y±80

∆Z

±80

Emission point

of red laser = Center of

the stem

Emission point of infrared laser

Reference plane

Emission point of red laser

Emission point of infrared laser

MIN.

L 100

dZ -10

TYP. MAX.

110 120

dX 104.5 119.7

dY 34.2 65

010

• Please refer to the chapter "Handling Precautions"

115

Application Circuits

NOTICE

●The 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.

●Contact 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.

●Observe 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).

●Contact 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.

●If 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.

the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any

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