Title Counterfeit component introduction & testing
Bob Willis
Counterfeit component
introduction & testing
Goods in inspection not a thing of the past!
In an ideal world, components be in circulation as a counter-
would only be purchased feit product. Using a spread-
from the original producer, sheet provides a simple way of
a franchised distributor or storing data and links to other
an approved non-franchised information.
source. However, it’s never an Where components are
ideal world. With the majority being used in existing products
of components being counter- or being considered in new
feited falling in the $1 to $10 products that are single source
range, this is a problem for all. or long lead times, they should
A simple approach to be added to the component
minimise counterfeit compo- database. Where components
nents passing through goods are considered to be high risk,
receipt to production is to are knowingly purchased from
create a component reference a new source or the supplier
database. Reference compo- has not been previously quali-
nents and images of known fied, reference samples must
good components can be used be obtained for review and
for future comparison. SMART of 28 posters showing test methods and possible testing
Group Ireland will be running a Counter- example component issues. A golden board assembly is often held
feit Component Avoidance workshop in The following should be considered by in manufacture as a reference for build
Dublin on 12th May; other workshops by engineers for inclusion in your company quality or as an inspection reference and
your columnist are planned in the USA database. Reference component details could be used by goods receipt staff. This
and Germany. should be obtained when a component is is an ideal solution for OEMs and also
The workshop features a free Coun- known to be going obsolescent, on long provides confidence for contract assembly
terfeit Component Guide which consists lead times, difficult to obtain or found to staff, as a working product is always the
best reference.
X-ray inspection is a very powerful tool
to examine a component or a batch of
components without taking them out of
their protective packaging. X-ray allows the
lead frames, die size, bond wire type and
package type to be defined. The examples
in Figure 1 show components inspected
without opening the sealed MSD bags.
A guide to inspection of plastic ICs
can be conducted by production staff after
some hands-on training and the creation of
a reference guide for counterfeit avoidance
Figure 1. Compoennts inspected in sealed MSD bags.
with samples as in Figures 2a through 2c.
4 – Global SMT & Packaging – March 2009
www.globalsmt.net
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