First and most important, it doesn't matter dip who is down-wind of the rendering plant. The customer said, "I want bla bla bla." The supplier said, "I want to supply to the customer's order for bla bla bla and will deliver to that specification on certain schedule and price."
Later, the supplier changed his mind; decided to deliver something other than "bla bla bla"; hid that decision from the customer; delivered an inferior product to the customer; and then, when questioned by the customer, had the gall to tell the customer the delivered product was what the customer required. [Or was it, "all the other kids at school have one!!!"?] Instead of saying, "Yes, Dear Customer, you are correct. I messed-up and didn't deliver as promised. I'm sorry. I'll make it right. And I will never do that again."
Second, way, way, way-down in order of precidence; IPC-6012, Classes 1, 2, 3 do not specify a HASL thickness, but require full coverage and that the board be solderable.
Third, further way, way, way-down in order of precidence; last time we checked: * HADCO DFM manual specifies a nominal thickness of 50-1500uin with an option for 100-1000uin * Merix DFM manual specifies 30-200uin
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