[Heath] Replacement Caps

[Glen Zook]

Many of the older electrolytic capacitors had -50% / +80% tolerances.  Modern electrolytic capacitors usually come in +/- 10% or +/- 20%.  The +/- 20% capacitors are, generally, a little less expensive and work very well.

One thing to look at is the temperature rating of the capacitor.  A rating of 85-degrees C is very common but there are 105-degree C capacitors available that will, in most circuits, last quite a bit longer than the 85-degree C capacitors.  The 105-degree capacitors are not much more expensive than the 85-degree ones and, I have run into situations where 105-degree capacitors were actually cheaper than the same value capacitor in 85-degree versions.
 Glen, K9STH 
Website: http://k9sth.net

      From: Kenneth G. Gordon <kgordon2006 at frontier.com>
 To: Glen Zook <gzook at yahoo.com> 
Cc: "Heath at puck.nether.net" <Heath at puck.nether.net>
 Sent: Thursday, February 1, 2018 10:22 AM
 Subject: Re: [Heath] Replacement Caps
   

Furthermore, with regard to electrolytics, as I remember it the tolerances on those was 
something like -20% +100%, so I've never particularly worried about using an "exact" 
replacement value for those.

   
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