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August 2003

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Subject:
From:
Larry Koens <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 25 Aug 2003 08:42:59 -0500
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text/plain
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text/plain (64 lines)
Guy,
We have discussed requiring our suppliers to conform to the IPC spec. But my feelings are that it may impact the costs. I was just hoping others have went down this path. Certainly users of no clean are dealing with this...

Larry


-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]]
Sent: Monday, August 25, 2003 8:00 AM
To: 'TechNet E-Mail Forum.'; Larry Koens
Subject: RE: [TN] solderability testing of SMT components


Your reasoning is sound. The solution is uncertain. (Perhaps I should
take up writing fortunes for cookies) 

Your supplier must know what is required before delivery of goods. Tell
them what you expect. They of course will baulk and, unless you
represent a huge interest, you will pay more for the components, but you
will have an agreement to site . . . Are there any huge manufacturing
interests remaining in the US and Canada? 


> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Larry Koens
> Sent: Friday, August 22, 2003 12:14 PM
> To: [log in to unmask]
> Subject: [TN] solderability testing of SMT components
> 
> 
> Technetters,
> How does your Quality department test components for
> solderability? Do they still test to the MIL-STD-202, 
> MIL-STD-750D which is a soldering iron or solder pot test? 
> I'm looking to have my company test to IPC/EIA J-STD-002A 
> 4.2.5 "test S- surface mount process simulation test." This 
> test basically is placing solderpaste on ceramic and running 
> it through the reflow oven. My thought is that this is how 
> these components are going to be used, so this test better 
> reproduces the actual world. 
>  
> But, many component manufactures still use one of the MIL
> standards. As you all know,  components will solder much 
> better using the MIL test then the IPC test.I can see there 
> is gonna be difficulty in getting them to accept them back as 
> defective. How do you handle this? Do you test to the MIL 
> test because thats what the manufacture does? How would you 
> handle the issue of the component passing the MIL test but 
> failing the IPC test Knowing that the IPC test reflects your 
> manufacturing process?
>  
> Larry
>  

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