George Herold wrote:
> On Nov 4, 6:30 pm, D from BC <myrealaddr...@comic.com> wrote:
>> On Wed, 04 Nov 2009 23:02:14 +0000, ChrisQ <m...@devnull.com> wrote:
>>> D from BC wrote:
>>>> Not just Low but Super Low Distortion!
>>>> Next year...Mega Ultra Super Low Distortion!
>>>> Super Low Distortion multilayer ceramic capacitors..
>>>> Ex:http://www.yuden.co.jp/us/product/pdf/dtmk_e.pdf
>>>> But not a distortion spec in sight :(
>>>> I suppose super low means it can't be measured and that's why there no
>>>> spec :)
>>>> I thought about using these for high end audio active filters.
>>>> D from BC
>>>> Amateur smps designer
>>>> British Columbia, Canada
>>>> Posted to sci.electronics.design
>>> I guess you mean dielectric absorption ?. Wikipedia have an article on
>>> this iirc, which describes the effect and compares dielectrics.
>>> This isn't a golden ears oxygen free copper scenario, is it ?...
>>> Regards,
>>> Chris
>> Beats me..
>> I just get attracted to things with 'super low' in the title. :)

>> Do you have a preferred type of chip capacitor (ex 1206 size) for
>> audio active filters?- Hide quoted text -

>> - Show quoted text -

> How about polyproplene through hole?

> George H.

> On Nov 5, 1:19 am, Fred Bartoli <" "> wrote:
>> George Herold a écrit :

>>> On Nov 4, 10:50 pm, D from BC <myrealaddr...@comic.com> wrote:
>>>> On Wed, 4 Nov 2009 19:21:45 -0800 (PST), George Herold
>>>> <ggher...@gmail.com> wrote:
>>>>> How about polyproplene through hole?
>>>>> George H.
>>>> I want to know the best I can do with chip capacitors.
>>>> And...
>>>> I only do smt.
>>>> And..
>>>> I hate drilling holes and using gigantic parts.
>>>> I'm wondering about this as a PP competitor.
>>>> http://embedded365.com/Locator/Products/ArticleID/25105/Action/Issue/...
>>>> 'Designed for high-frequency filtering applications, the CF Series of
>>>> surface-mount MLCCs (multilayer ceramic chip capacitors) is said to be
>>>> a less expensive, smaller and more reliable alternative to SMT plastic
>>>> film capacitors for designers of consumer audio equipment and PLL
>>>> mobile phone circuits. '
>>>> http://www.yuden.co.jp/ut/product/capacitor/common5.html#feature
>>>> 'Low distortion and low shock noise make these capacitors
>>>> appropriatefor use in analog or digital mobile devices.
>>>> Superior heat-resistance, high breakdown voltage, and mechanical
>>>> strength make these capacitors appropriate for replacing film
>>>> capacitors.
>>>> Applications
>>>> Signal line for AV products
>>>> Analog signal coupling applications
>>>> PLL circuit of mobile phones
>>>> Good temperature characteristics for time constant circuits,
>>>> oscillation circuits and filters '
>>>> However, there's no data on the distortion which makes this part a bit
>>>> mysterious.
>>>> I hate drilling holes and using gigantic parts.
>>> It's cheap to get someone else to drill the holes.  (Don't you use a
>>> board house?) And the caps aren't that big... depending on the value.
>>> Though Panasonic stopped making polyP and now there seems to be only
>>> Wima.
>> Vishay has the old Roederstein series too. Currently using MKP1837 which
>> are 1% tol.
>> Not all the E192 serie though :-( In fact just the E6 decade between 10
>> and 100nF, but hey, it's still there...

>> --
>> Thanks,
>> Fred.- Hide quoted text -

>> - Show quoted text -

> Thanks Fred,  Not really much of a range (sigh).  Who do you buy them
> from?  We bought a lifetime supply of the panasonic 2% polypropylene,
> before they went away.  But for new products Wima seems to have the
> best selection (purchased from Mouser.)

> George H.