PROTECTION PRODUCTS
1www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS - EMIClampTM
EClamp1002A
ESD/EMI Protection
for Speaker Ports
Description
Revision 10/15/2004
Schematic & Pin Configuration
Dimensions
Features
The EClampTM1002A is a low pass filter array with
integrated TVS diodes for ESD protection. It is de-
signed to provide bidirectional filtering of EMI/RFI
signals and electrostatic discharge (ESD) protection in
portable electronic equipment. This state-of-the-art
device utilizes solid-state silicon-avalanche technology
for superior clamping performance and DC electrical
characteristics. They have been optimized for use on a
speaker port in cellular phones and other portable
electronics.
The EClamp1002A effectively replaces 10 discrete
components in a small SC-89 package to provide ESD
protection and EMI filtering. Each device requires less
than 2.9mm2 of PCB area with a low profile of only
0.60mm. This small package will protect and filter up
to two lines. This small outline makes the device
especially well suited for portable applications.
The TVS diodes are bidirectional for supporting bipolar
audio signals without distortion. The TVS diodes provide
effective suppression of ESD voltages in excess of 15kV
(air discharge) and 8kV (contact discharge) per IEC 61000-
4-2, level 4. The device has very low insertion loss in the
pass band (to approximately 10MHz) and high attenua-
tion at frequencies ranging from 800MHz to 3GHz. Each
line features two stages of TVS diode protection. They
feature large cross-sectional area junctions for conducting
high transient currents. They offer desirable characteris-
tics for board level protection including fast response time,
low operating and clamping voltage, and no device degra-
dation.
Applications
Mechanical Characteristics
Cellular Handsets & Accessories
Cordless Phones
Personal Digital Assistants (PDA’s)
Webpads & Handhelds
Notebook
Portable Instrumentation
MP3 Players
Transient protection for data lines to
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Bidirectional EMI/RFI filter with integrated ESD
protection
Protects two I/O lines
Ultra-small SC-89 package (1.7 x 1.7 x 0.6mm1.7 x 1.7 x 0.6mm
1.7 x 1.7 x 0.6mm1.7 x 1.7 x 0.6mm
1.7 x 1.7 x 0.6mm)
requires less than 2.9mm2 of PCB area
Working voltage: 5V
Low leakage current
Low operating and clamping voltages
Solid-state silicon-avalanche technology
SC-89 (SOT-666) package
Lead Finish: Matte Tin
Molding compound flammability rating: UL 94V-0
Marking : Marking Code
Weight: 2.9mg (typical)
Packaging : Tape and Reel per EIA 481
0.60
1.70
1.701.25
0.30
0.50
SC-89 (Top View)
2 2004 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp1002A
Absolute Maximum Rating
Electrical Characteristics (T=25oC)
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3 2004 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp1002A
Typical Characteristics
Clamping Voltage vs. Peak Pulse Current Capacitance vs. Reverse Voltage
Typical Insertion loss
ESD Clamping (8kV Contact) ESD Clamping (15kV Air)
Analog Crosstalk
START
.
030 MHz 3
STOP 000
.
000 000 MHz
CH1 S21 LOG 6 dB / REF 0 dB
120
122
124
126
128
130
132
134
136
138
140
012345
Reverse Voltage - VR (V)
Capacitance - Cj (pF)
f = 1MHz
START
. 030 MHz 3
STOP 000
.
000 000 MHz
CH1 S21 LOG 20 dB/ REF 0 dB
8
10
12
14
01234567
Peak Pulse Current - IPP
(A)
Clam
p
in
g
Volta
g
e - VC
(
V
)
Wavef orm
Parameters:
tr = 8µs
td = 20µs
4 2004 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp1002A
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6
EClamp-
Speaker
Audio
Codec
1002A
Layout Examples
Applications Information
Device Connection Options
The EClamp1002A provides EMI filtering and ESD
protection in a small SC-89 package for speaker port
applications. The equivalent circuit diagram is shown
below. The layout of the device is designed such that
the data lines can be routed through the device. The
first line pair enters at pins 1 and exits at pins 6. The
second line pair enters at pins 3 and exits at pins 4.
The device is symmetrical so the above connections
may be reversed. Layout examples are shown to the
right.
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
Good circuit board layout is critical for the suppression
of ESD induced transients. The following guidelines are
recommended:
zPlace the TVS near the input terminals or connec-
tors to restrict transient coupling.
zMinimize the path length between the TVS and the
protected line.
zMinimize all conductive loops including power and
ground loops.
zThe ESD transient return path to ground should be
kept as short as possible.
zNever run critical signals near board edges.
zUse ground planes whenever possible.
Matte Tin Lead Finish
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish
is composed of 100% tin solder with large grains.
Since the solder volume on the leads is small com-
pared to the solder paste volume that is placed on the
land pattern of the PCB, the reflow profile will be
determined by the requirements of the solder paste.
Therefore, these devices are compatible with both
lead-free and SnPb assembly techniques. In addition,
unlike other lead-free compositions, matte tin does not
have any added alloys that can cause degradation of
the solder joint.
4
5
61
2
3
EClamp-
Speaker
Audio
Codec
1002A
Option 1
Option 2
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5 2004 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp1002A
Outline Drawing- SC-89 (SOT-666)
Land Pattern- SC-89 (SOT-666)
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE ME
T
DIM
Y
Z
G
X
C
MILLIMETERSINCHES
(1.45)
.033
.090
.012
.024
(.057)
0.85
2.30
0.30
0.60
DIMENSIONS
Z
X
Y
CG
Y
P 0.50.020
P
c
L
1
A
Baaa C A-B D
D
e
Nxb
2
E/2
D
E1 E
N
C
A
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
NOTES:
OR GATE BURRS.
DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
2.
1.
L1
INCHES
.063
N
c
E1
E
L
D .059
.043
DIM
A
MIN
.019
1.70
1.25
1.50
1.10
6
-
.008
.063
.047
.067
.049
6
-
0.20
1.60
1.20
1.60
MILLIMETERS
MAX
0.60
MIN
DIMENSIONS
MAXNOM
-.024
NOM
0.50 -
1.701.55.061 .067
0.300.10.012.003
L1 .003 .006 0.150.10.008 0.20
b .005 --
0.15.012 0.30
e.020 BSC 0.50 BSC
0.180.10.007.003
aaa .004 0.10
6 2004 Semtech Corp. www.semtech.com
PRELIMINARY
PROTECTION PRODUCTS
EClamp1002A
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Marking Code Ordering Information
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OEClamp and EMIClamp are trademarks of Semtech Corporation
Tape and Reel Specification
Tape Specification and Device Orientation
OO O
Note:
(1) Device is symmetrical so there is no pin 1 identifier.
