thanks, that's the kind of info i was both looking for and hoping to
hear

Dennis Saputelli

Matt Pobursky wrote:
> 
> On Sat, 01 Jun 2002 10:42:41 -0700, Dennis Saputelli wrote:
> >
> >does anyone have any production experience with surface mount
> >ceramic resonators with internal caps?
> 
> Yep, used many 10,000's (maybe 100,000's by now?) in quite a few
> designs. I've had good luck with parts from Murata, AVX and ECS.
> Murata seems to be the highest quality, but most expensive. AVX
> and ECS have been less expensive, in my experience.
> 
> >i remember looking into this several years ago and at that time
> >i saw two 'issues' (problems?): the price was 2-3x thru hole
> >parts there were many admonitions on the data sheets re handling
> >and process control
> 
> The price of SMD parts are about at parity with leaded parts --
> about 1-2% difference is what I saw when I recently priced some
> 6MHz parts.
> 
> >it appeared to me (mostly by inference) that the flat thin shape
> >was possibly brittle and not as protected or relieved from
> >planar stresses as the more encapsulated thru hole package would
> >be.
> 
> I haven't had any mechanical failures ever (at least that have
> been relayed back to me). I have seen some soldering related
> problems though. Go light on the solder paste, the parts have a
> tendency to "float up" on the solder vs. other similar pad size
> parts, causing cold solder joints. Other than that, they haven't
> caused any of my designs any significant problems.
> 
> Matt Pobursky
> Maximum Performance Systems

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