Hello All,
I've been asked a stumper (for me
anyway).
Is there a specification for the co-planarity
(?) of HASL across the board? My customer is concerned that thickness variations
(80 microinches on one land / 800 microinches on the other land - for the same
component) are causing tilting of his components.
I know that there are minimum thickness
requirements which address solderability, but have not heard of the
above.
Don Karp
Trace Laboratories -
Central