IPC have provided IPC-4552 to IPC-4554 for ENIG, ImmAg and ImmSn (and I 
believe 4555 is in the pipeline for OSP?), 

What would you norammly expect to see on PCB fabrication drawing notes as 
a suitable qualifying fab spec for HASL finish?

Any practical advice would be gratefully received.

Thanks 

Nigel Burtt

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