They are also called ceramic disc capacitors, ceramic disk capacitors, ceramic discs, ceramic disks, ceramic disc capacitor, ceramic disk capacitor.

Ceramic capacitors may have the following printed on them:

  Y5P : temperature rating
  Z5V : temperature rating
  Z5U : temperature rating

If the capacitor has something printed like

  0.0001
  0.1
  .1
  .0008

then this tells you that your rating 
Note: still verifying if this is correct

  .1 microfarad  ???


Converting microfarad to picofarad: Many catalogs will only tell you the capacitor 
in picofarads or microfarads. So if your capacitor is in microfarads and you wish to 
buy one from a catalogue which lists a lot of picofarad capacitors, sometimes you 
may have to convert your microfards to picofarads.

Figure out Y in the equation:

 0.1 microfarads = Y picofarads
 
 0.1mf x 10 power of -6 = Ypf x 10 power of -12

 0.1mf x 10 power of -6 / 10 power of -12 = Ypf 

Comment: 
   -6 MINUS -12 = -6 + 12
                = 6

 0.1mf x 10 power of 6 = Ypf

 100 000 = Ypf

 Answer = 100 000pf

Conclusion: 100 000pf (picofarads) equals 0.1mf (microfarads)
 
Or you could use a converter tool (software or online):
  Capacitance Converter Tool