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1995

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Subject:
Re: PCB's with SIR patterns
From:
David Bergman <[log in to unmask]>
Date:
Fri, 1 Sep 1995 13:11:13 -0500 (CDT)
Content-Type:
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TEXT/PLAIN (63 lines) 
Steve

I think you need to define what SIR pattern you are looking to have 
etched.  IPC maintains a supply of IPC-B-25 boards.  Several IPC members 
(North Texas Circuits, ECD, Diversified) have supplied IPC-B-24 and 
IPC-B-36.  I'm not sure if anyone is supplying Bellcore patterns, but I 
would guess someone would be.

We are in the process of revising the B-25 board as part of the solder 
mask specification update.  The committees of IPC are moving toward the 
B-24 pattern of .4mm lines and .5mm spaces.

Regards
Dave
***************************************************
David W. Bergman, Technical Director
IPC
2215 Sanders Road
Northbrook, IL  60062-6135
708-509-9700 x340 Phone
708-509-9798 Fax
email  [log in to unmask]
***************************************************


On Wed, 30 Aug 1995 [log in to unmask] wrote:

> 
>   Good day!
>   
>       I was wondering if anybody knew of where one could obtain PCB's that 
>   had SIR patterns etched in them? I've seen production fabs from our 
>   customers that would have a SIR pattern etched into the coupons, or 
>   breakaway of their fabs, but none with just the patterns themselves.
>   
>       We would like to obtain them to be able to verify our cleaning 
>   processes. A contact and approximate cost would be greatly appreciated!
>   
>   
>   
>         
>                         ////  
                                           
>                        |  @@ /      Steve Gregory                         
>                        C   )        Process Training Engineer   
>           ////  
       \_o         Pragmatech Incorporated               
>          |  @@ /                    101 Nicholson Lane          
>          C   )                      San Jose, California 95134            
>           \_o        ////  
        [log in to unmask]         
>                     |  @@ /         Phone:(408) 943-1151                  
>                     C   )           Fax:(408)943-1461           
>                      \_o                                        
>     -------------------------------------------------------------
>   
>   ....the views expressed above are my own, not my employers...        
>   
> 
>

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