PS9124-V [RENESAS]
HIGH CMR, 10 Mbps OPEN COLLECTOR OUTPUT TYPE, 5-PIN SOP (SO-5) PHOTOCOUPLER;型号: | PS9124-V |
厂家: | RENESAS TECHNOLOGY CORP |
描述: | HIGH CMR, 10 Mbps OPEN COLLECTOR OUTPUT TYPE, 5-PIN SOP (SO-5) PHOTOCOUPLER 输出元件 |
文件: | 总17页 (文件大小:450K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Data Sheet
PS9124
R08DS0049EJ0100
Rev.1.00
HIGH CMR, 10 Mbps OPEN COLLECTOR OUTPUT TYPE, 5-PIN SOP (SO-5) PHOTOCOUPLER
Aug 30, 2013
DESCRIPTION
The PS9124 is an optically coupled high-speed, active low type isolator containing a GaAlAs LED on the input side and
a photodiode and a signal processing circuit on the output side on one chip.
FEATURES
PIN CONNECTION
•
•
•
•
•
•
•
•
•
Low power consumption (VCC = 3.3/5 V)
Small package (SO-5)
High-speed response (tPHL = 100 ns MAX., tPLH = 100 ns MAX.)
High-speed (10 Mbps)
High isolation voltage (BV = 3 750 Vr.m.s.)
Open collector output
Embossed tape product : PS9124-F3 : 2 500 pcs/reel
Pb-Free product
(Top View)
<R>
5
1
4 3
1. Anode
2. Cathode
3. GND
4. V
O
5. VCC
2
Safety standards
• UL approved: No. E72422
• CSA approved: No. CA 101391 (CA5A, CAN/CSA-C22.2 60065, 60950)
• DIN EN 60747-5-5 (VDE 0884-5) approved (Option)
<R>
APPLICATIONS
•
FA Network
The mark <R> shows major revised points.
The revised points can be easily searched by copying an "<R>" in the PDF file and specifying it in the "Find what:" field.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 1 of 15
PS9124
Chapter Title
PACKAGE DIMENSIONS (UNIT: mm)
+0.3
3.4
–0.1
5
4
3
7.0 0.3
(4.4)*1
1
2
0.5 0.3
1.27
0.25 M
+0.10
0.4
–0.05
*1 ( ) indicates reference dimension.
PHOTOCOUPLER CONSTRUCTION
Parameter
Air Distance
MIN.
4.2 mm
4.2 mm
0.2 mm
Outer Creepage Distance
Isolation Distance
BLOCK DIAGRAM (Unit: mm)
1
5
4
3
2
SHIELD
LED
ON
Output
L
OFF
H
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 2 of 15
PS9124
Chapter Title
MARKING EXAMPLE
Ni/Pd/Au PLATING
Type Number
Assembly Lot
*1
9124
N231
No. 1 pin Mark
R
Initial of Renesas
(Engraved mark)
N
2
31
Week Assembled
Year Assembled
(Last 1 Digit)
Rank Code
*1 Bar : Pb-Free
ORDERING INFORMATION
Part Number
Order Number
Solder Plating
Specification
Packing Style
Safety Standards Application
Approval
Part Number *1
PS9124
PS9124-AX
Pb-Free
20 pcs (Tape 20 pcs cut)
Embossed Tape 2 500
pcs/reel
Standard products PS9124
(UL, CSA
PS9124-F3
PS9124-F3-AX
(Ni/Pd/Au)
approved)
PS9124-V
PS9124-V-AX
20 pcs (Tape 20 pcs cut)
Embossed Tape 2 500
pcs/reel
DIN EN60747-5-5
(VDE0884-5)
PS9124-V-F3 PS9124-V-F3-AX
approved (Option)
Note: *1. For the application of the Safety Standard, following part number should be used.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 3 of 15
PS9124
Chapter Title
ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)
Parameter
Symbol
IF
Ratings
Unit
mA
V
Diode
Forward Current *1
Reverse Voltage
Supply Voltage
Output Voltage
Output Current
Power Dissipation *2
25
VR
5
Detector
VCC
VO
7
7
V
V
IO
25
mA
mW
Vr.m.s.
°C
PC
200
Isolation Voltage *3
BV
TA
3 750
Operating Ambient Temperature
Storage Temperature
−40 to +110
−55 to +125
Tstg
°C
Notes: *1. Reduced to 0.2 mA/°C at TA = 25°C or more.
*2. Reduced to 4.0 mW/°C at TA = 75°C or more.
*3 AC voltage for 1 minute at TA = 25°C, RH = 60% between input and output.
Pins 1-2 shorted together, 3-5 shorted together.
RECOMMENDED OPERATING CONDITIONS
Parameter
Low Level Input Voltage
High Level Input Current
Supply Voltage
Symbol
VFL
MIN.
−2
3.8
2.7
4.5
TYP.
MAX.
0.8
7.5
3.6
5.5
5
Unit
V
IFH
6.0
3.3
5.0
mA
V
VCC
TTL (RL = 1 kΩ, loads)
N
Pull-up Resistor
RL
330
4 k
Ω
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Aug 30, 2013
Page 4 of 15
PS9124
Chapter Title
ELECTRICAL CHARACTERISTICS (TA = −40 to +110°C, unless otherwise specified)
Parameter
Symbol
Conditions
MIN.
TYP. *1 MAX.
Unit
V
Diode
Forward Voltage
Reverse Current
Terminal Capacitance
VF
IR
IF = 10 mA, TA = 25°C
VR = 3 V, TA = 25°C
f = 1 MHz, VF = 0 V, TA = 25°C
VCC = VO = 3.3 V, VF = 0.8 V
VCC = VO = 5.5 V, VF = 0.8 V
1.3
1.55
1.8
10
μA
pF
μA
Ct
30
1
Detector High Level Output Current
IOH
80
100
0.6
1
Low Level Output Voltage
VOL
ICCH
ICCL
IFHL
RI-O
VCC = 3.3 V, IF = 4.5 mA,
IOL = 13 mA
0.2
V
VCC = 5.5 V, IF = 4.5 mA,
IOL = 13 mA
High Level Supply Current
Low Level Supply Current
VCC = 3.3 V, IF = 0 mA,
VO = open
4
7
mA
mA
mA
Ω
VCC = 5.5 V, IF = 0 mA,
VO = open
VCC = 3.3 V, IF = 4.5 mA,
VO = open
6
7
10
10
VCC = 5.5 V, IF = 4.5 mA,
VO = open
Coupled Threshold Input Voltage
VCC = 3.3 V, RL = 350 Ω,
VO = 0.8 V
1.0
3.0
(H → L)
V
CC = 5 V, RL = 350 Ω,
VO = 0.8 V
Isolation Resistance
VI-O = 1 kVDC, RH = 40 to 60%,
1011
TA = 25°C
Isolation Capacitance
Propagation Delay Time
(H → L) *2
CI-O
tPHL
V = 0 V, f = 1 MHz, TA = 25°C
TA = 25°C
0.6
40
pF
ns
75
VCC = 3.3 V, IF = 4.5 mA,
100
RL = 350 Ω, CL = 15 pF
TA = 25°C
VCC = 5 V, IF = 4.5 mA,
RL = 350 Ω, CL = 15 pF
40
50
75
100
Propagation Delay Time
tPLH
TA = 25°C
75
ns
(L → H) *2
V
CC = 3.3 V, IF = 4.5 mA,
RL = 350 Ω, CL = 15 pF
TA = 25°C
CC = 5 V, IF = 4.5 mA,
RL = 350 Ω, CL = 15 pF
100
45
5
75
V
100
Pulse Width Distortion
(PWD)
⏐tPHL- PLH
tpsk
tr
t
⏐ VCC = 3.3/5 V, IF = 4.5 mA,
35
40
ns
ns
RL = 350 Ω, CL = 15 pF
VCC = 3.3/5 V, IF = 4.5 mA,
RL = 350 Ω, CL = 15 pF
VCC = 3.3/5 V, IF = 4.5 mA,
RL = 350 Ω, CL = 15 pF
VCC = 3.3/5 V, IF = 4.5 mA,
Propagation Delay Skew
Rise Time
20
5
ns
Fall Time
tf
ns
RL = 350 Ω, CL = 15 pF
Common Mode
Transient Immunity at
High Level Output *3
CMH
VCC = 3.3/5 V, TA = 25°C,
IF = 0 mA, VO > 2 V,
RL = 350 Ω, VCM = 1 kV
VCC = 3.3/5 V, TA = 25°C,
IF = 4.5 mA, VO < 0.8 V,
RL = 350 Ω, VCM = 1 kV
10
10
15
kV/μs
Common Mode
Transient Immunity at Low
Level Output *3
CML
15
kV/μs
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 5 of 15
PS9124
Chapter Title
Notes: *1. Typical values at TA = 25°C
<R>
*2. Test circuit for propagation delay time
VCC = 3.3/5.0 V
Pulse input (I
F)
0.1μF
R
L
L
= 350
(PW = 1 s,
Duty cycle = 1/10)
Input
μ
VO
(Monitor)
C
= 15 pF
(Monitor)
47
Remark CL includes probe and stray wiring capacitance.
(I
F
= 4.5 mA)
Input
IF
50%
tf
t
r
V
OUT
90%
10%
90%
10%
Output
1.5 V
V
OL
tPHL
tPLH
*3. Test circuit for common mode transient immunity
1 kV
0 V
V
CM
90%
10%
I
F
SW
V
CC = 3.3/5.0 V
(Monitor)
0.1
F
R
L
= 350
μ
V
O
t
r
t
f
C
L
= 15 pF
V
O
VOH
(IF = 0 mA)
2 V
0.8 V
V
O
+
V
OL
(IF = 4.5 mA)
VCM = 1 kV
Remark CL includes probe and stray wiring capacitance.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 6 of 15
PS9124
Chapter Title
<R>
TYPICAL CHARACTERISTICS (TA = 25°C, unless otherwise specified)
MAXIMUM FORWARD CURRENT
vs. AMBIENT TEMPERATURE
DETECTOR POWER DISSIPATION
vs. AMBIENT TEMPERATURE
30
25
20
15
10
5
300
250
200
150
100
50
100 110
0
100 110
125
0
25
50
75
125
2.0
5
25
50
75
Ambient Temperature T
A
(°C)
Ambient Temperature T (°C)
A
FORWARD CURRENT vs.
FORWARD VOLTAGE
SUPPLY CURRENT vs.
AMBIENT TEMPERATURE
100
10
10
8
I
CCL(I = 4.5 mA)
F
6
V
CC = 5.5 V
T
A
= 110°C
85°C
50°C
25°C
0°C
1
0.1
4
-40°C
2
I
CCH(I
F
= 0 mA)
25
V
CC = 3.3 V
100
0.01
0
-50
1.0
1.2
1.4
1.6
1.8
(V)
-25
0
50
75
(°C)
125
Forward Voltage V
F
Ambient Temperature T
A
OUTPUT VOLTAGE vs.
FORWARD CURRENT
OUTPUT VOLTAGE vs.
FORWARD CURRENT
4
3.5
3
6
5
4
3
2
1
V
CC = 3.3 V
V
CC = 5.5 V
2.5
2
RL
= 350 Ω
= 1.0 kΩ
RL
= 350 Ω
= 1.0 kΩ
1.5
1
RL
R
L
R = 4.0 kΩ
L
RL
= 4.0 kΩ
0.5
0
1
2
3
4
0
1
2
3
4
5
Forward Current I
F
(mA)
Forward Current I (mA)
F
Remark The graphs indicate nominal characteristics.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 7 of 15
PS9124
Chapter Title
LOW LEVEL OUTPUT VOLTAGE vs.
AMBIENT TEMPERATURE
LOW LEVEL OUTPUT VOLTAGE vs.
AMBIENT TEMPERATURE
0.5
0.4
0.5
0.4
V
CC = 3.3 V,
= 4.5 mA
V
CC = 5.5 V,
= 4.5 mA
IF
IF
I
OL = 16 mA
I
OL = 16 mA
13 mA
13 mA
10 mA
6 mA
10 mA
6 mA
0.3
0.2
0.1
0.0
0.3
0.2
0.1
0.0
-50 -25
0
25
50
75
(°C)
100 125
-50 -25
0
25
50
75
(°C)
100 125
Ambient Temperature T
A
Ambient Temperature T
A
THRESHOLD INPUT CURRENT vs.
AMBIENT TEMPERATURE
THRESHOLD INPUT CURRENT vs.
AMBIENT TEMPERATURE
5
4
5
4
V
V
R
CC = 3.3 V,
V
V
R
CC = 5 V,
O
= 0.8 V,
O
= 0.8 V,
L
= 350 Ω
L
= 350 Ω
3
2
1
0
3
2
1
0
I
FHL
I
FHL
I
FLH
IFLH
-50 -25
0
25
50
75
(°C)
100 125
-50
-25
0
25
50
75
(°C)
100 125
Ambient Temperature T
A
Ambient Temperature T
A
PROPAGATION DELAY TIME,
PULSE WIDTH DISTORTION
vs. AMBIENT TEMPERATURE
PROPAGATION DELAY TIME,
PULSE WIDTH DISTORTION
vs. AMBIENT TEMPERATURE
120
100
80
120
100
80
V
CC = 3.3 V,
= 4.5 mA,
VCC = 5 V,
IF
I = 4.5 mA,
F
R
L
= 350 Ω
R
L
= 350 Ω
t
PLH
PHL
t
PLH
PHL
60
60
t
t
40
40
20
20
PWD
PWD
25 50
Ambient Temperature T
0.0
0.0
-50 -25
0
25
50
75
(°C)
100 125
-50 -25
0
75
(°C)
100 125
Ambient Temperature T
A
A
Remark The graphs indicate nominal characteristics.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 8 of 15
PS9124
Chapter Title
SWITCHING TIME vs.
AMBIENT TEMPERATURE
SWITCHING TIME vs.
AMBIENT TEMPERATURE
50
50
45
40
35
30
VCC = 3.3 V,
VCC = 5 V,
45
40
35
30
IF = 4.5 mA,
IF = 4.5 mA,
RL
= 350 Ω
RL
= 350 Ω
25
20
15
10
5
25
20
15
10
5
tr
tf
tr
tf
0
0
-50 -25
0
25
50
75
100 125
-50 -25
0
25
50
75
100 125
Ambient Temperature TA (°C)
Ambient Temperature TA (°C)
PROPAGATION DELAY TIME,
PULSE WIDTH DISTORTION
PROPAGATION DELAY TIME,
PULSE WIDTH DISTORTION
vs. FORWARD CURRENT
vs. FORWARD CURRENT
100
90
100
90
80
70
60
VCC = 3.3 V,
VCC = 5 V,
TA = 25°C,
TA = 25°C,
RL
= 350 Ω
RL
= 350 Ω
80
70
tPLH
tPLH
60
50
40
30
20
10
50
40
30
20
10
tPHL
tPHL
PWD
PWD
0
0
5
10
15
20
25
5
10
15
20
25
Forward Current IF (mA)
Forward Current IF (mA)
Remark The graphs indicate nominal characteristics.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 9 of 15
PS9124
Chapter Title
<R>
TAPING SPECIFICATIONS (UNIT: mm)
Outline and Dimensions (Tape)
2.0 0.05
4.0 0.1
+0.1
–0
3.45 MAX.
1.5
1.55 0.1
3.0 0.1
0.3 0.05
3.9 0.1
8.0 0.1
Tape Direction
PS9124-F3
Outline and Dimensions (Reel)
2.0 0.5
2.0 0.5
13.0 0.2
R 1.0
21.0 0.8
13.5 1.0
17.5 1.0
Packing: 2 500 pcs/reel
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 10 of 15
PS9124
Chapter Title
RECOMMENDED MOUNT PAD DIMENSIONS (UNIT: mm)
D
A
Part Number
PS9124
A
B1
B2
C
D
6.25 1.27
2.54
0.8
1.45
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 11 of 15
PS9124
Chapter Title
<R>
NOTES ON HANDLING
1. Recommended soldering conditions
(1) Infrared reflow soldering
•
•
•
•
•
•
Peak reflow temperature
260°C or below (package surface temperature)
Time of peak reflow temperature
Time of temperature higher than 220°C
Time to preheat temperature from 120 to 180°C
Number of reflows
10 seconds or less
60 seconds or less
120 30 s
Three
Flux
Rosin flux containing small amount of chlorine (The flux
with a maximum chlorine content of 0.2 Wt% is
recommended.)
Recommended Temperature Profile of Infrared Reflow
(heating)
to 10 s
260°C MAX.
220°C
to 60 s
180°C
120°C
120 30 s
(preheating)
Time (s)
(2) Wave soldering
•
•
•
•
•
Temperature
Time
260°C or below (molten solder temperature)
10 seconds or less
Preheating conditions 120°C or below (package surface temperature)
Number of times
Flux
One (Allowed to be dipped in solder including plastic mold portion.)
Rosin flux containing small amount of chlorine (The flux with a maximum chlorine
content of 0.2 Wt% is recommended.)
(3) Soldering by Soldering Iron
•
•
•
Peak Temperature (lead part temperature) 350°C or below
Time (each pins)
3 seconds or less
Flux
Rosin flux containing small amount of chlorine (The flux with a
maximum chlorine content of 0.2 Wt% is recommended.)
(a) Soldering of leads should be made at the point 1.5 to 2.0 mm from the root of the lead
(4) Cautions
Fluxes
•
Avoid removing the residual flux with freon-based and chlorine-based cleaning solvent.
2. Cautions regarding noise
Be aware that when voltage is applied suddenly between the photocoupler’s input and output at startup, the output
transistor may enter the on state, even if the voltage is within the absolute maximum ratings.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 12 of 15
PS9124
Chapter Title
USAGE CAUTIONS
1. This product is weak for static electricity by designed with high-speed integrated circuit so protect against static
electricity when handling.
2. By-pass capacitor of more than 0.1 μF is used between VCC and GND near device. Also, ensure that the distance
between the leads of the photocoupler and capacitor is no more than 10 mm.
3. Avoid storage at a high temperature and high humidity.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 13 of 15
PS9124
Chapter Title
SPECIFICATION OF VDE MARKS LICENSE DOCUMENT
<R>
Parameter
Symbol
Spec.
707
Unit
Vpeak
Vpeak
Maximum repetitive peak operating isolation voltage
Partial discharge test voltage at 100% production test
Upr = 1.875 × UIORM, Method b, tm=1sec, pd < 5 pC
UIORM
Upr
1 326
Partial discharge test voltage at Type test and Sample test
Upr = 1.6 × UIORM, Method a, tm=10sec, pd < 5 pC
Maximum transient isolation voltage (Transient overvoltage tini=60sec)
Installation classification (IEC 60664/ DIN EN 60664-1/ VDE0110 Part 1)
for rated mains voltage < 300 Vr.m.s.
Upr
1 131
6 000
Vpeak
Vpeak
UIOTM
I - IV
I - III
175
III a
2
for rated mains voltage < 600 Vr.m.s.
Comparative tracking index (IEC 60112/ DIN EN 60112/ VDE 0303 Part 11)
Material group (DIN EN 60664-1/ VDE0110 Part 1)
Pollution degree (DIN EN 60664-1/ VDE0110 Part 1)
Climatic category (IEC 60068-1/ DIN EN 60068-1)
Operating temperature range
CTI
40/110/21
–40 to +110
–55 to +125
TA
°C
°C
Storage temperature range
Tstg
Isolation resistance, minimum value
VIO = 500 Vdc at TA=25°C
Ris MIN.
Ris MIN.
1012
1011
Ω
Ω
VIO = 500 Vdc at TA MAX. at least 100°C
Safety limiting values ratings (maximum allowable in the event of a fault
or a failure, see thermal derating curve)
Maximum ambient safety temperature
Maximum input current
Maximum output power
Isolation resistance at VIO= 500 Vdc, TA=Ts
Ts
Isi
Pso
150
200
300
109
°C
mA
mW
Ω
Ris MIN.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 14 of 15
PS9124
Chapter Title
This product uses gallium arsenide (GaAs).
GaAs vapor and powder are hazardous to human health if inhaled or ingested, so please observe
the following points.
Caution GaAs Products
• Follow related laws and ordinances when disposing of the product. If there are no applicable laws
and/or ordinances, dispose of the product as recommended below.
1. Commission a disposal company able to (with a license to) collect, transport and dispose of
materials that contain arsenic and other such industrial waste materials.
2. Exclude the product from general industrial waste and household garbage, and ensure that the
product is controlled (as industrial waste subject to special control) up until final disposal.
• Do not burn, destroy, cut, crush, or chemically dissolve the product.
• Do not lick the product or in any way allow it to enter the mouth.
R08DS0049EJ0100 Rev.1.00
Aug 30, 2013
Page 15 of 15
Revision History
PS9124 Data Sheet
Description
Summary
Rev.
Date
Page
0.01
1.00
Jul 03, 2012
Aug 30, 2013
−
First edition issued
Throughout “Preliminary Data Sheet” is changed to “Data Sheet.”
p.1
Modification of FEATURES
Modification of APPLICATIONS
p.6
p.7 to 9
p.10
Modification of Test circuit for propagation delay time
Addition of TYPICAL CHARACTERISTICS
Modification of TAPING SPECIFICATIONS
Addition of NOTES ON HANDLING
p.12
p.14
Addition of SPECIFICATION OF VDE MARKS LICENSE DOCUMENT
All trademarks and registered trademarks are the property of their respective owners.
C - 1
SALES OFFICES
http://www.renesas.com
Refer to "http://www.renesas.com/" for the latest and detailed information.
California Eastern Laboratories, Inc.
4590 Patrick Henry Drive, Santa Clara, California 95054, U.S.A.
Tel: +1-408-919-2500, Fax: +1-408-988-0279
Renesas Electronics Europe Limited
Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K
Tel: +44-1628-651-700, Fax: +44-1628-651-804
Renesas Electronics Europe GmbH
Arcadiastrasse 10, 40472 Düsseldorf, Germany
Tel: +49-211-65030, Fax: +49-211-6503-1327
Renesas Electronics (China) Co., Ltd.
7th Floor, Quantum Plaza, No.27 ZhiChunLu Haidian District, Beijing 100083, P.R.China
Tel: +86-10-8235-1155, Fax: +86-10-8235-7679
Renesas Electronics (Shanghai) Co., Ltd.
Unit 204, 205, AZIA Center, No.1233 Lujiazui Ring Rd., Pudong District, Shanghai 200120, China
Tel: +86-21-5877-1818, Fax: +86-21-6887-7858 / -7898
Renesas Electronics Hong Kong Limited
Unit 1601-1613, 16/F., Tower 2, Grand Century Place, 193 Prince Edward Road West, Mongkok, Kowloon, Hong Kong
Tel: +852-2886-9318, Fax: +852 2886-9022/9044
Renesas Electronics Taiwan Co., Ltd.
13F, No. 363, Fu Shing North Road, Taipei, Taiwan
Tel: +886-2-8175-9600, Fax: +886 2-8175-9670
Renesas Electronics Singapore Pte. Ltd.
80 Bendemeer Road, Unit #06-02 Hyflux Innovation Centre Singapore 339949
Tel: +65-6213-0200, Fax: +65-6213-0300
Renesas Electronics Malaysia Sdn.Bhd.
Unit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No. 18, Jln Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia
Tel: +60-3-7955-9390, Fax: +60-3-7955-9510
Renesas Electronics Korea Co., Ltd.
11F., Samik Lavied' or Bldg., 720-2 Yeoksam-Dong, Kangnam-Ku, Seoul 135-080, Korea
Tel: +82-2-558-3737, Fax: +82-2-558-5141
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