taximan Posted June 18, 2011 Report Share Posted June 18, 2011 Hiya, In a lot of build pictures I see people using what I can only describe as a shiny cermic blob type capacitor,my question is can a normal ceramic disk type capacitor be used instead? tia Paul Quote Link to comment Share on other sites More sharing options...
JRock Posted June 18, 2011 Report Share Posted June 18, 2011 (edited) Could be tantalums? They look like ceramic blobs... and they are probably not great to use. They are mostly 1 uF and higher, so you won't find many ceramic caps of those values, although, I got some for 2.2 uF... Use electrolytic instead. Edited June 18, 2011 by JRock Quote Link to comment Share on other sites More sharing options...
sparx Posted June 18, 2011 Report Share Posted June 18, 2011 The answer to that is it depends! Electrolytics are, in a very anoraky way, poor capacitors, sometimes these qualities are good things. Tantalums are "better" but are more expensive. Both are available in larger sizes. In general though, if a circuit needed a cap of say, 100nF, pretty much any 100nF capacitor can be used. Regards S Quote Link to comment Share on other sites More sharing options...
taximan Posted June 18, 2011 Author Report Share Posted June 18, 2011 (edited) Thanks for the answers guys but I don't think I explained clearly enough,I was comparing ceramic disk http://www.rapidonline.com/sku/Electronic-Components/Capacitors/Ceramic/Ceramic-disc-capacitors/62494/08-0050 to multilayer ceramics http://www.rapidonline.com/Electronic-Components/Capacitors/Ceramic/Radial-multilayer-ceramic-capacitors/62498 The reason I ask is that most of the online stores I use for bits and pieces don't stock the multilayer type whereas the ceramic disk type are readily available. cheers Paul Edited June 18, 2011 by taximan Quote Link to comment Share on other sites More sharing options...
nebula Posted June 19, 2011 Report Share Posted June 19, 2011 (edited) Multilayers and discs will substitute for each other just fine. Don't forget to watch your lead spacing - discs are usually bigger. When I use discs I try to use the coated ones. You don't have to, but the uncoated ceramic discs are a bit fragile. Edited June 19, 2011 by nebula Quote Link to comment Share on other sites More sharing options...
taximan Posted June 21, 2011 Author Report Share Posted June 21, 2011 Thanks Nebula, When you say the uncoated ceramics are a bit fragile do you mean in the physical sense,as in 'they break easily' or do you mean electronically as in 'they don't suffer over voltage etc?' cheers Paul Quote Link to comment Share on other sites More sharing options...
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