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Brief
history and cause:
The
issue of tin whiskers was discovered around
the 1940's and 50's and ways to resolve
this was to add mixtures such as lead
into the metal to reduce the possibility
of growth. With the on set of RoHS from
EU, it called for an elimination of lead
content thus causing what was once a solution
to whisker growth into a new challenge
to overcome. Tin whiskers arise when length
of time along with stress in environment
is introduced into a product's life cycle.
This thin whisker was observed to grow
extending into other metal pieces. In
doing so, the whiskers caused various
shortages in the final product.
Although conclusive evidence on how and
why these whiskers form is still in debate
several methods and factor can reduce
its growth and Leoco have taken steps
to prevent accelerated tin whisker growth
in its RoHS products.
Leoco is following the recommandations
of the JEDEC standard:
Recommandations:
- JESD
22A-121
-
JESD201
-
JESD 22A-104
*All
materials will be tested with in-house
newly acquired tin whisker testing machines.
Please contact Leoco for more info
Click
here to see our test methods
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