Re: Why don't they mark SMD caps?

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#798

From: JosephKK
Date: Fri, 24 Jul 2009 04:11

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On Thu, 23 Jul 2009 15:59:19 +1000, "David L. Jones"
<altzone@gmail.com> wrote:

>An interesting question was posted on another forum:
>"can you get (ceramic) SMD caps (1206,0805 etc) with the values printed on 
>them?".
>
>My first response was that I've very rarely seen this (like maybe once), and 
>while it is possible (see 
>http://www.synrad.com/search_apps/application_briefs/117-2.htm), you 
>basically can't get labeled ones, they are almost always without markings.
>
>It got me to thinking, why is it so?
>My guess would be that it's due to the surface finish (or lack thereof) on 
>ceramic capacitors, and/or the delicate nature of their multi-layer 
>construction means they could be more easily damaged or properties altered 
>by the process.
>As opposed to most SMD resistors that have a coating on them which would 
>allow for easy and accurate printing using various technologies.
>
>Any know the real reason(s) why ceramic SMD caps don't have markings?
>
>Dave.

Simple, because they have gotten away with it for 30 years.

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From: "JosephKK"<quiettechblue@yahoo.com>
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Subject: Re: Why don't they mark SMD caps?
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Date: Thu, 23 Jul 2009 21:11:15 -0700

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