Tin Whisker Mitigation Process
aerospace
aviation
AEM’s Sn/Pb Conversion Process
n
military
medical
Includes both Sn/Pb plating and subsequent fusion
processing to ensure that resultant component termi-
nation finishes are a homogenous mixture of Sn/Pb.
As a leading producer of high-reliability passive
components for use in military, aerospace
and medical electronic devices, AEM, Inc. has
devised an aerospace-qualified tin/lead (Sn/Pb)
conversion process designed to virtually eliminate
the formation of tin whiskers on surface-mount
component terminations (including types with
external terminals). The AEM proprietary plating
process delivers superior quality while eliminating
the potential damage to sensitive electronic devices
caused by conventional hot-solder dipping. AEM’s
Sn/Pb conversion process is ideal for chip scale
passive components including capacitors, inductors,
resistors, ferrite chip beads, fuses, resistor arrays,
capacitor arrays, bead arrays and many molded body
passive and active surface mount component types.
n
Ensures that all areas of each component termination
are converted to Sn/Pb (including termination locations
in egress and wrap-around areas).
n
Includes monitoring of component quality going into
and out of the Sn/Pb conversion process (QA1/QA2/
DPA – to verify solderability, leach resistance, and
terminal adhesion strength).
n
Ensures that converted component terminations con-
tain a minimum of 5% Pb as verified by SEM/EDS and
XRF inspection methods.
n
May be followed by 100% electrical or customer speci-
fied up-screening activities. 100% visual inspection at
7X-10X magnification levels is performed by AEM on all
Sn/Pb conversion lots.
n
Included within the scopes of AEM’s AS9100 and IS0
9001:2008 QMS Certifications.
AEM, INC.
6610 Cobra Way, San Diego, CA 92121, USA
858.481.0210
w w w. a e m - u s a . c o m
AEM Services
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AEM Facts
n
Replating of most multi-layer chip components
using AEM’s Tin Whisker Mitigation (TWM) process
Base part sourcing from approved OEM distributors
Up-screening and QCI per military standards
DPA Analysis on a sample from each TWM lot
Full warranty on all Sn/Pb terminated components
AEM is the world’s largest manufacturer of solid-body current limiting
fuses and fusistors for the aerospace industry
AEM is the world’s sole manufacturer of high-reliability ferrite
chip beads
AEM’s high-reliability fuses have been in orbit for 38 years with
zero reported failures
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Tin Whisker Mitigation Process
Parts Processed
Surface-Mount Capacitors
Surface-Mount Resistors
Surface-Mount Inductors
Surface-Mount Chip Beads
Surface-Mount Fuses
Surface-Mount Varistors
Leaded Components (consult factory)
Quality Control Laboratory
Incoming Inspection and Testing
Process Control Inspection
Product Reliability and Life Testing
Environmental Stress Screening
Product Traceability
Sampling of Manufacturer Parts Processed
AVX
KOA
Coiltronics
Ohmite
CTS
Panasonic
EBG
TDK
Fair-Rite
Venkel
Johanson Technology
Vishay Dale
Kemet
Certifications and Standards
AS9100 / IS0 9001:2008 Certified by TÜV Rheinland
MIL-PRF-23419/12 / MIL-STD-202 Certified Testing Laboratory
MIL-STD-790 Inspection System – DSCC/DLA Audited/Approved
SPC - Statistical Process Control implemented at critical process control points
Raw Material Control & Traceability
QPL listed for MIL-PRF-23419/12 (FM12), Hi-Rel Fuses
Meets EIA & EIAJ Standards
Partial List of Key Customers
Avnet
Benchmark Electronics
Boeing Company
Celestica Aerospace Technologies
Diehl BGT Defence GmbH & Co.
EADS Deutschland GmbH
Harris Corporation
Irvine Electronics
Irvine Sensors Corp
JACO Electronics
KOA Speer
L-3 Communications
Pemstar
Perkin Elmer
Primus Technologies Corp.
Northrop Grumman
Raytheon Company
Raytheon Missile Systems
Raytheon IDS EDC
Saab Ericsson Space
Sandia National Lab
Smart Electronics
TT Electronics
Tyco Electronics
AEM, INC.
6610 Cobra Way, San Diego, CA 92121, USA
858.481.0210
w w w. a e m - u s a . c o m
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