I am having a difficult time identifying a high voltage, ceramic capacitor that I need to replace. I've tried at length to research this myself to no avail. I am hoping that someone out there can help me with this. Apart from the first line on the capacitor which I am reading as 220pF ±10%, I don't know how to interpret the rest. I cannot find a meaning for the symbol at the bottom that is a half circle with a bowtie in the middle of it and what does the tilde mean in this context? Cannot determine the voltage etc Thanks! 
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3 Answers
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Its a murata cap, made in Thailand. Here is a link to the PDF
Has a value of 220pf Probably one of these at digikey
answered Oct 23, 2018 at 18:57
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See this document
Page 38:
- 221K: Nominal capacitance: 221, K: Capacitance tolerance, K: +/- 10%
- KX: Type designation KX,
- X1Y1: See Features, item 8:
- Rated Voltage: X1: AC440V(r.m.s.), Y1: AC250V(r.m.s.) or
- X1: AC440V(r.m.s.), Y1: AC300V (r.m.s.)
- 22: Manufactured date class
- M15: Company Name Code: M15: Made in Thailand
answered Oct 23, 2018 at 19:02
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This is marked '221K' which commonly means 220 pF,10% tolerance, in an EIA standard marking. The '250~' indicates that it is rated for 250VAC. Beyond that, the 'X1Y1' string probably indicates that this component is safety-rated for direct line connection (and would be considered a safety-critical component).
The color and the lower string probably indicate the manufacturer and possibly even the factory of origin.
This reference may help with similar questions: wikihow
