Hi Steve -
     
     The short answer to your question is NO! If you don't have an overall 
     problem with solderability then "raising the bar" will only increase 
     cost without reciprocal benefit. It sounds like you have the 
     occasional, vendor specific solderability problem and no wide spread 
     issues. Adding any specification requirements only makes sense if the 
     additional requirements provide some benefit to the process or product 
     for the extra cost or logistics that such requirements will induce. 
     The reason for the extra cost for JSTD-002 components is the component 
     manufacturers must perform a couple of additional tasks (i.e. 
     solderability testing and documentation of those results) that are not 
     part of their normal process flow. As for the changing of the 
     component part numbers, that may have more to do with how the vendors 
     track the component requirements - I know vendors that do not have 
     "two" component numbers for a JSTD-002 or nonJSTD-002 component. The 
     component vendors processes are just like the assemblers processes - 
     nobody is setting up a process to produce "bad" product! JSTD-002 is a 
     tool that the electronics industry can use as a baseline benchmark of 
     comparison and as a tool for assuring a given level of solderability. 
     If you are satisfied that the level of solderability you are receiving 
     from your vendors is adequate for your processes and product 
     performance then the 'addition" of more solderability requirements is 
     not necessary.
     
     
     Dave Hillman
     JSTD 002 Committee Chair
     [log in to unmask]


______________________________ Reply Separator _________________________________
Subject: j-std-002 parts
Author:  [log in to unmask] at ccmgw1
Date:    2/19/97 12:08 PM


HI,
     
I'd like to inquire about the supply side market for commercial grade 
components that meet the requirements of IPC/J-STD-002 re. solderability
     
Currently we do not specify any solderability spec for the purchase of our 
electronic components.  We get many products that solder very well - both 
wave and hand with various fluxes(no clean - RMA - OA).  Some parts are not 
so good - even mil spec.
     
After talking with our major distributors it seems that the commercial grade 
parts that meet J-STD/IPC/Mil standards for solderability are not as 
available as straight commercial grade and will cost a bit more.  They also 
said I would have to change part numbers - which would be a horrific task.
 Is this true or am I talking to the wrong suppliers?
     
The second question is that given we do not appear to have a "problem" with 
most of our straight commercial grade parts, what gains could be made by 
sacrificing some cost and leadtime?  No strong evidence exists that suggests 
a field performance / reliability concern.  I can not see how I could justify 
"raising the bar", however many experts say that to change would be an 
improvement.
     
Anyone have a practical philosophy on this dilemma that I can borrow?
     
Steve Ross
US&S
     
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