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I have a blue ceramic disc capacitor and I'm trying to work out the values. On one side of the disc are the following characters, in approximately this pattern:

  SHM
X 1400-
Y 1250-
E 222M
  F

The other side has a bunch of logos and symbols which I can't make out. I imagine the capacitor is 22 nF, but I'm trying to work out the working voltage is.

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That is a South Hongming 2200pF E-grade Y5V X1(400V)/Y1(250V) safety capacitor. The symbols are the numerous safety certifications the capacitor has.

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