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Moof
Joined: 21 Nov 2003
Posts: 154
Helped: 6
Location: Argentina
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 27 Nov 2004 19:39 differences between different types of capacitors |
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Anyone can explainme the difference??.
ceramic disc capacitors, electrolytic capacitors, polyester capacitors, tantalum
and when i should choose each one?
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mzewani
Joined: 21 Feb 2002
Posts: 43
Helped: 1
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| 27 Nov 2004 19:45 Re: differences between different types of capacitors |
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Hi
have a look at this book
Lumped Elements For RF And Microwave Circuits
Cheers
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radiohead
Joined: 13 May 2004
Posts: 326
Helped: 21
Location: Heart of Europe
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| 30 Nov 2004 9:06 Re: differences between different types of capacitors |
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This contains everything you ever wanted to know about discrete technology
Cheers
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mosheavi
Joined: 29 Nov 2004
Posts: 11
Helped: 1
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| 30 Nov 2004 9:50 Re: differences between different types of capacitors |
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Use this sw to get more info about performences of diffrent capacitors.
In general-
1. Electrolytic capacitors - use for low cost, High ripple curent, low ESR and shorter MTBF and high cap value. 1UF and above. use For power s.
2. Polyester capacitors- use for High Stability and Reliability.
3. Ceramic cap use for high freq, low cost and you can get X7R for general use 10% and higher accuracy 2% NPO.
4. Tantalum Cap - Hige capacitance, High ripple curent, Low ESR. use For power s.
Get more info at:
Kemet
cornell-dubilier - http://www.cornell-dubilier.com/
AVX - http://www.avxcorp.com/
kemet - http://www.kemet.com/
panasonic - http://www.panasonic.com/industrial/components/
vishay - http://www.vishay.com/capacitors/
presidio - http://www.presidiocomponents.com/
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Fom
Joined: 10 Mar 2004
Posts: 758
Helped: 56
Location: Taiwan
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| 30 Nov 2004 9:53 Re: differences between different types of capacitors |
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| Quote: |
| This contains everything you ever wanted to know about discrete technology |
Sounded attractive but actually this file describes obsolete technology. No information about chip components like chip capacitor or chip resistor.
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12ax7
Joined: 15 Nov 2004
Posts: 8
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| 01 Dec 2004 18:14 Re: differences between different types of capacitors |
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Plastic: Low dielectric losses
Polyester (Mylar) |
Polypropylene > all good for general purpose audio freq's, active filters, timers
Polystyrene | ( low values)
Mica (silvered) > low loss & stable for RF tuned circuits and Oscillators
Ceramic > Good as RF Bypass, not very stable and non-linear, avoid in audio
many types and TempCo. HiVolt used for for mains noise suppress
Electrolytic: High loss
Aluminium : General purpose PSU and bypass
Tantalum : Low voltage PSU and bypass
Check out Electron Transfer types known as Black Gate (by RubyCon)
good for HiFi PSU and coup[ling
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EEHardware
Joined: 01 Apr 2004
Posts: 111
Helped: 1
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| 08 Dec 2004 5:48 differences between different types of capacitors |
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| hi,how can i download this book?--Lumped Elements For RF And Microwave Circuits ??
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cedance
Joined: 24 Oct 2003
Posts: 704
Helped: 28
Location: Germany
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| 08 Dec 2004 6:10 Re: differences between different types of capacitors |
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| EEHardware wrote: |
| hi,how can i download this book?--Lumped Elements For RF And Microwave Circuits ?? |
by doin a search in eda and getting the link !!!! 
http://www.edaboard.com/viewtopic.php?t=74109&highlight=rf+microwave+circuits
/cedance
Last edited by cedance on 12 Mar 2005 14:23; edited 1 time in total |
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andy1
Joined: 24 Jul 2004
Posts: 123
Helped: 2
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| 13 Dec 2004 6:09 Re: differences between different types of capacitors |
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Keep in mind that not all capacitors are created equal even those of the same type such as ceramic, electrolytic ...
If you need to design high performance switching power supply, such as those that used for high speed processor, you need very good cap with low esr that will cost a lot more money.
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qutang
Joined: 25 Oct 2004
Posts: 315
Helped: 6
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| 13 Dec 2004 12:38 differences between different types of capacitors |
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| I use tantalum as a bypass capacitor for regulator.
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brmadhukar
Joined: 21 Jun 2002
Posts: 844
Helped: 29
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| 13 Dec 2004 13:08 Re: differences between different types of capacitors |
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Hi,
For RF : Do not ignore the parasitic you can use them very well. Just add around 0.4pF per landing pair.
B R M
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