CM1402
SIM Card EMI Filter Array with ESD Protection
Features
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•
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Functionally and pin compatible with CMD’s
CSPEMI400
OptiGuard
™
coated for improved reliability at
assembly
Three channels of EMI filtering, each with ESD
protection
Two additional channels of ESD-only protection
±10kV
ESD protection (IEC 61000-4-2, contact
discharge) on all pins
±25kV
ESD protection (HBM)
Greater than 30dB of attenuation at 1GHz
10-bump, 1.960mm x 1.330mm footprint Chip
Scale Package (CSP)
Chip Scale Package features extremely low
lead inductance for optimum filter and ESD
performance
Lead-free version available
Product Description
CAMD's CM1402 is an EMI filter array with ESD pro-
tection, which integrates three pi filters (C-R-C) and
two additional channels of ESD protection. The
CM1402 has component values of 20pF-47Ω-20pF,
and 20pF-100Ω-20pF. The parts include avalanche-
type ESD diodes on every pin, which provide a very
high level of protection for sensitive electronic compo-
nents that may be subjected to electrostatic discharge
(ESD). The ESD diodes connected to the filter ports
are designed and characterized to safely dissipate
ESD strikes of
±10kV,
beyond the maximum require-
ment of the IEC 61000-4-2 international standard.
Using the MIL-STD-883 (Method 3015) specification
for Human Body Model (HBM) ESD, the pins are pro-
tected for contact discharges at greater than
±25kV.
The ESD diodes on pins A4 and C4 ports are designed
and characterized to safely dissipate ESD strikes of
±10kV,
well beyond the maximum requirement of the
IEC 61000-4-2 international standard.
This device is particularly well suited for portable elec-
tronics (e.g. mobile handsets, PDAs, notebook com-
puters) because of its small package format and easy-
to-use pin assignments. In particular, the CM1402 is
ideal for EMI filtering and protecting data lines from
ESD for the SIM card slot in mobile handsets.
The CM1402 incorporates
OptiGuard
™
coating which
results in improved reliability at assembly.The CM1402
is available in a space-saving, low-profile Chip Scale
Package with optional lead-free finishing.
Applications
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SIM Card slot in mobile handsets
I/O port protection for mobile handsets, notebook
computers, PDAs, etc.
EMI filtering for data ports in cell phones, PDAs or
notebook computers
Electrical Schematic
R
1
A1
C
C
GND
R
1
A3
C
C
C3
A4
C
C
C4
C1
A2
C
C
R
2
C2
B1,B2
© 2005 California Micro Devices Corp. All rights reserved.
11/02/05
R
1
=100Ω
R
2
=47Ω
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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Fax: 408.263.7846
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www.cmd.com
1
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
