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November 2008

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Subject:
From:
Victor Hernandez <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Mon, 17 Nov 2008 10:12:55 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (155 lines)
There is a PTH via underneath the ceramic component.   I have not cross
sectioned to that plane yet.   I will to understand the connection of
the side terminations.

Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gary Crowell
Sent: Friday, November 14, 2008 2:59 PM
To: [log in to unmask]
Subject: Re: [TN] Strange looking ceramic component

I do hope there's a via under the cap on those ground pads...
 

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of gacrowell
> Sent: Friday, November 14, 2008 1:52 PM
> To: [log in to unmask]
> Subject: Re: [TN] Strange looking ceramic component
> 
> AKA X2Y caps.
> 
> --------------------------------
> Gary A. Crowell Sr., P.E., CID+
> www.linkedin.com\in\garycrowellsr
> Micron Technology; Boise, ID
> (208) 368-5325
>  
> 
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> > Sent: Friday, November 14, 2008 12:37 PM
> > To: [log in to unmask]
> > Subject: Re: [TN] Strange looking ceramic component
> > 
> > Hi Victor,
> > 
> > Sorry for not getting your pictures posted sooner. I've been 
> > busy with a
> > fire here...
> > 
> > Anyways, got your pics up now:
> > 
> > http://stevezeva.homestead.com/files/PWB-FL1-1.JPG
> > 
> > http://stevezeva.homestead.com/files/PWB-FL1-1a.JPG
> > 
> > I'm not an electrical engineer, but I do know that they are filter
> > capacitors used to help with EMI. We place a lot of them on 
> > quite a few
> > assemblies.
> > 
> > Steve
> > 
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
> > Sent: Friday, November 14, 2008 10:03 AM
> > To: [log in to unmask]
> > Subject: [TN] Strange looking ceramic component
> > 
> > Fellow TechNetters:
> > 
> >    I have a ceramic component, capacitor, with four solder joint
> > terminations.   My main concern is the component body size to 
> > copper pad
> > ratio.   Do they violate IPC standards?   I sent Steve G. 
> > some photos to
> > upload to his web page.
> > 
> > Victor,
> > 
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