Daniel:

The inside cover of J-STD-001A and page vi of IPC-A-610B show the 
synopsized relationship of the two documents. 

Page v of IPC-A-610B is even more explicit: "J-STD-001 establishes 
the minimum acceptability 
requirements for printed board assemblies soldering. IPC-A-620, when 
addressing soldering is a companion and complimentary document, providing 
pictorial interpretation of the requirements of J-STD-001."

It goes on to note: "The IPC-A-610 has additional criteria defining 
handling, mechanical requirements, and other workmanship requirements."

Either spec can be used when invoked by customer or contractual 
agreement. A-610 may be used as a standalone document for inspection, but 
keep in mind that it doesn't specify the frequency of in-process or 
end-product inspection, nor the allowable number of repair/rework 
defects. These are found in -001.

Mike Buetow
IPC Technical Staff
2215 Sanders Road
Northbrook, IL 60062-6135
T: 708-509-9700
F: 708-509-9798
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On Tue, 24 Oct 1995, Daniel F. Shea wrote:
> We are in the process of standardizing our assembly standards 
> for pwa's. Should we be referencing IPC-A-610 or ANSI/J-STD-001
> or both. There is a lot of duplication between the two.
> Thanks
> 
> dshea@sentry