Ceramic Capacitors v's Tantalem Capacitors

[BusyBee]

I know there are issues with some ceramic capacitors. I spent some time a while ago choosing ceramic capacitors to replace silver mica in my RF circuitry for lesser critical applications as they are somewhat cheaper. It's good to flag this up! I think they have improved somewhat in recent years but some of the more suspect ones from the far east may well be a bit iffy, apart from those you mention here.

Tracy