I respectfully disagree. The IPC-A-610C is a support document. It assumes a
great deal about the assembly. It is a workmanship / inspection standard
designed to qualify end items manufactured using J-STD-001C compliant
materials and processes.

Blindly using the A-610 as an acceptance standard is very dangerous.

Consider the 75% vertical fill requirement. This is acceptable because we
assume that the bare board passed J-STD-003 requirements and IPC-6012A
performance requirements. If the board has poor plating you would pass
garbage on to your customer.





> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Sauer, Steven T.
> Sent: Thursday, October 18, 2001 8:48 AM
> To: [log in to unmask]
> Subject: Re: [TN] Trimming Leads...
>
>
> Thomas:
> IPC-A-610 is an "acceptability standard" or "workmanship standard" not a
> process requirements standard.  As you pointed out, rev B attempted to
> require a soldering touch-up operation.  Rev C properly set the standard
> straight by requiring the leads to be visually inspected at 10X
> and follows
> with the words, "as an alternative to visual inspection, the solder
> connections may be reflowed."  This all comes down to the process being
> employed: "solder/cut/solder/inspect" or "solder/cut/inspect" by the
> manufacturer, not by a workmanship standard trying to dictate process
> requirements.  The objective of 610 is provide accept/reject
> criteria after
> processing -- which has been accomplished quite well in Rev C and the
> proposed Amendment 1.
>
> Steve Sauer

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