Electronic – Help identifying a capacitor

The brown capacitors have values in picoFarads

eg
47 = 47 picoFarad = 47 pF = 0.000 000 000 047 Farad !
10 = 10 pF

For the yellow and green capacitors with markings of the form

anb

Here n = nanoFarad = nF.

1n0 = 1.0 nF
2n2 = 2.2 nF
6n8 = 6.8 nF

Note that the use of xNx here is (probably) unqiue to capacitors in the nF range - I do not recall seeing eg xPx or xUx markings ever.

However page 70 of this superbVishay ceramic single layer capacitors document suggests you might expect to meet any of eg
p68 = 0.68 pF
n15 = 0.15nF = 150 pF
5p0 = 5 pF etc

The green dot is quite likely to be a voltage rating, but alas I don't know what system it uses. There are several different colour/voltage systems. Typically this sort of capacitor is 50 Volt rated but this is not certain.

More usual nnX 3 digit markings

Most capacitor numerical markings are 3 digit and express the value in pF (pico Farad = 10^-12 Farad) with the last digit being a power of 10 multiplier.

So

223 = 22,000 pF = 22 nF = 0.022 uF = 0.000 000 022 F
106 = 10 000 000 pF = 10 uF
100 = 10 pF and NOT 100 pF etc

Part of a larger tutorial series on capacitors. Deals in colour codes. Does not answer exact question but is useful

This does NOT answer the original question but is useful

I added your image.

Appears to be a MOV (Metal Oxide Varistor), whose job is to absorb voltage spikes and surges, which it appears to have done heroically.

You can find a whole family of similar devices here - you can choose parameters from the tables to limit the range of types of device, voltages, energy etc.

You'll find that these look suspiciously similar. From $US0.28 in ones for here. These are examples only. Many more.

Voltage rating wanted depends on whether your system is 110 VAC or 230 VAC or other.

Typical specification table below. You care mainly about continuous AC voltage rating and peak current and/or energy handling. Peak current ratings and Joule energy handling should be as large as you want to afford.