Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Ceramic Capacitor for audio input
Ceramic Capacitor for audio input
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
Reply
 
Thread Tools Search this Thread
Old 12th May 2017, 09:51 AM   #21
ClaveFremen is offline ClaveFremen  Italy
Reality first!
diyAudio Member
 
ClaveFremen's Avatar
 
Join Date: May 2005
Location: Milan, Italy
Ceramic Capacitor for audio input
If you need small SMD capacitors for coupling why not a film one like Cornell Dubilier FCA, Wima PPS or Panasonic ECW (all available from Mouser)?
__________________
Dario
ClaveFremen "Bailando Salsa en el Sietch"
  Reply With Quote
Old 12th May 2017, 12:04 PM   #22
DUG is offline DUG  Canada
diyAudio Member
 
Join Date: Jan 2003
Location: mississauga ontario canada
From Murata's web site
Attached Images
File Type: jpg X7R-CvsV-murata.JPG (70.7 KB, 228 views)
__________________
Doug We are all learning...we can all help
"You can't stop the signal, Mal. Everything goes somewhere..."
  Reply With Quote
Old 12th May 2017, 02:31 PM   #23
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Murata's plots are typical of Hi K ceramic.
X7R perform quite a bit better and when used on a near constant DC supply voltage have near zero capacitance change. eg a 220nF 50V cap on a 35V supply might have an installed capacitance of 170nF, but stays near that value because the DC stays near it's normal operating value.

For audio passing capacitors one can use the Lo K Class1 ceramics designated NP0/C0G both for filtering duty and/or for coupling duty.
Now that MLCC are available you can get higher NP0/C0G values that were rarely seen 10years ago.
__________________
regards Andrew T.
  Reply With Quote
Old 12th May 2017, 03:20 PM   #24
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Quote:
Originally Posted by AndrewT View Post
.
Now that MLCC are available you can get higher NP0/C0G values that were rarely seen 10years ago.
are you sure
remember the OP wants >1uF range
__________________
.
.
  Reply With Quote
Old 12th May 2017, 03:23 PM   #25
OlegSh is offline OlegSh
diyAudio Member
 
Join Date: Dec 2010
Location: Germany
Ceramic Capacitor for audio input
The biggest value NP0/C0G SMD cap that is available from mouser is 0.47uF. It is 2220 size which means that the board area would be smaller if 5mm leads pitch polyester film cap is used instead.
  Reply With Quote
Old 12th May 2017, 03:43 PM   #26
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Quote:
Originally Posted by OlegSh View Post
The biggest value NP0/C0G SMD cap that is available from mouser is 0.47uF. It is 2220 size which means that the board area would be smaller if 5mm leads pitch polyester film cap is used instead.
So the OP needs 2 of them at 4 Euros a piece
Any manufacturing engineer would be hung if he dared specifying 2 of those,
but hey this audio.
In modern SMD mobile phones they use solid tantalum here for audio / headsets.
__________________
.
.
  Reply With Quote
Old 21st May 2017, 10:05 AM   #27
basreflex is offline basreflex  Spain
diyAudio Member
 
Join Date: Oct 2007
X7R and X5R are well known for their capacitance vs voltage characteristics.
so it is important that the voltage across the cap does NOT change, to have a stable capacitance, and reduce modulation of series impedance with momentary voltage. (distortion). so first is to determine wether the voltage changes, and that is only at low frequencies (coupling) or when used in filters. this means you can safely use these ceramics in coupling stages, but not use them as high pass filters. so overrate the value at least 10x (or HP freqs < 1hz), plus some marging for the curve if there is a large dc difference across the cap.
  Reply With Quote

Reply


Ceramic Capacitor for audio inputHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
which ceramic capacitor for PA03 clog Chip Amps 10 19th October 2015 08:13 AM
ceramic capacitor Vrystaat Solid State 9 3rd October 2012 07:39 PM
Ceramic capacitor non-linearity jackinnj Power Supplies 18 7th September 2011 02:10 AM
av400 ceramic capacitor sterky Parts 0 8th June 2010 07:02 PM
ceramic capacitor zahlm Parts 0 18th June 2004 09:43 PM


New To Site? Need Help?

All times are GMT. The time now is 11:57 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki