Why different kinds of ceramic caps? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 23rd September 2002, 03:41 PM   #1
sam9 is offline sam9  United States
diyAudio Member
sam9's Avatar
Join Date: Jun 2002
Location: Left Coast
Default Why different kinds of ceramic caps?

I'm aware of the reasons ceramic disc cap should be avoided in the signal path (but may be unavoidable in other locations).

However, in browsing the Digi-Key catalog (an activity which the which spouse thinks is majorly wierd) I notice several variations on cermic caps such as "monolithic", "layered" etc. Should these be catagorized pretty much the same as the more common ceramic disc or do they have properties that are sufficiently different that they are in a separate category? If so are those properties of any interest from an audio point of view.

This is hardly an urgent question, I just want to satisfy my curiosity.
  Reply With Quote
Old 23rd September 2002, 04:24 PM   #2
tiroth is offline tiroth  United States
diyAudio Member
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
I would generally characterize monolithic or multilayer ceramics as better than discs for virtually all applications (excepting perhaps high voltage?), but they probably have limited value in analog audio applications.

There are so many variables with ceramic caps, including gross construction (disc/multilayer/single layer); individual manufacturer's form factor, construction and termination choices; and the many dielectrics available. The characteristics of NPO, X7R, Y5V, Z5U, F, Taiyo Yuden's low-distortion "SD", etc all lead to very different capacitors.
  Reply With Quote
Old 23rd September 2002, 05:16 PM   #3
Electrons are yellow and more is better!
diyAudio Member
peranders's Avatar
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
This topic is very interesting but from a professional view. I have tried to study the pros and cons of different dielectrics. I use XR7 always as decoupling capacitors (SMD) and I can't see the real difference between the types as long as you are not going to use them in critical places.

If we talk small caps (<1nF) I don't see why I not should use NP0.
/Per-Anders (my first name) or P-A as my friends call me
PA03 LM4780 amplifier group buy, SIGN UP HERE for the group buy 0 boards left. 118 paid.
  Reply With Quote
Old 24th September 2002, 02:20 PM   #4
artnyos is offline artnyos  United States
Join Date: Sep 2002
Location: New York
Default Ceramic dielectrics


I would avoid ceramic caps for anything but high frequency decoupling of digital circuits as they can sound quite nasty. I would use COG(NP0) if I had to use a ceramic cap at all.

  Reply With Quote
Old 24th September 2002, 03:48 PM   #5
sam9 is offline sam9  United States
diyAudio Member
sam9's Avatar
Join Date: Jun 2002
Location: Left Coast
Default When very high bandwidth needed

I saw a table somewhere that listed caps by bandwidth. Ceramics were the only ones that went into the Ghz range. The next category down (one of the "poly'") went to 500Mhz. So I suppose that if you really need to be sure a cap is effective at those frequencies, ceramics would be the way to go.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
X7R vs NP0/C0G Ceramic Caps speakerguy79 Parts 4 6th March 2007 11:52 PM
Replacing ceramic caps by MKP?? Duck-Twacy Solid State 6 21st July 2003 11:22 PM
ESP P68, 500v ceramic caps? Kram Parts 1 10th June 2003 09:00 PM
Replacing ceramic caps - do or don't? Cradle22 Solid State 4 16th March 2003 12:39 PM
Replacing ceramic disc caps with silver mica caps? G Solid State 5 18th November 2002 01:02 PM

New To Site? Need Help?

All times are GMT. The time now is 02:53 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2