Hi Guy

As your new VC of the 5-30 committee and new Chair of 5-32b SIR & ECM, I have taken the liberty of publishing a book on this subject; as much because I could foresee a lot of questions. There being only a few of us in a position to answer everyone in the shortest time-frame, I figured that this would be the fastest and most effective communication tool.

As some of you might know, a publishing group have been producing many “industry handbooks” covering a variety of topical subjects. This includes the latest book: Search: "The Printed Circuit Assemblers Guide to Process Validation”.

I respectfully recommend that anyone interested in this significant topic, might benefit from reading this peer reviewed epistle. Its a FREE download.

My team and I spent over 5 years collaborating with a global, multi-national, safety critical and high reliability group, to provide them, and everyone else, with the necessary know-how as “what to do next”.

Unlike others, I have more than 25 years assisting, in finite detail, the complete scope of this topic. We have satisfied users all around the World. Doug Pauls, et al, are far from being alone. 

I sincerely hope this will direct you to answering your many questions.

I am available on or off Technet, if you need more.

Happy Christmas everyone

Graham Naisbitt
 
> On 19 Dec 2019, at 20:17, Guy Ramsey <[log in to unmask]> wrote:
> 
> We have been exploring the J-STD-001G amendment.
> We think we have a "qualified" process because:
> 1. We have monitored our process for several years and established an
> action threshold at a level that is much lower than the old IPC limit.
> Because with know the "normal" ROSE test result from or Ionograph.
> 2. We have never seen evidence of corrosion on assemblies returned from the
> field. And have no reports of corrosion from customers.
> 
> But, we have not done any SIR testing in years. The mix of parts and part
> densities have changed dramatically. We have no reason to trust the old SIR
> test results.
> We would like to gather objective evidence that our cleaning process is
> compliant.
> 
> Any experience out there with the Magnalytix system?
> Any advice about test coupon selection?
> Anyone?