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Nor Flash

New Contributor

Hi

Would anyone be able to advise whether leads on cypress components are Matt tin over Nickel or over silver... or something else? The online data for S29AL016J70TFI020 (here https://www.cypress.com/part/s29al016j70tfi020 ) only specifies Matte tin, but in order to justify a tin whisker mitigation plan it is important to identify the barrier between the lead and the tin finish. Any pointers that help identify this would be greatly appreciated.

Many thanks

John.

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Moderator
Moderator

Hello,

Yes, The lead frame material of S29AL016J70TFI020 is Cu.

Thank you

Regards,

Bushra

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Honored Contributor

Hi,

The lead frame material of S29AL016J70TFI020 is Cu.
The alloy type of external plating of the Cu lead frame is Sn 100%, and the finish surface is matte.
In general, Cypress will perform whisker tests based on JESD22-A121 / JESD201, and confirm that the results meet the specifications.

https://www.cypress.com/packaging/pb-free-packaging

Thanks and regards,

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Moderator
Moderator

Hello,

Yes, The lead frame material of S29AL016J70TFI020 is Cu.

Thank you

Regards,

Bushra

View solution in original post

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