I have got plenty of capacitors which I do not know the manufacturer of. They are all marked with the 3-digit value code (for instance, "153", meaning 15×103 pF = 15 nF). There is a second code written on the components, also consisting of 3 figures (letters and numerals). I suppose they hold information about the tolerance, the rated voltage and some temperature dependency quantity, but I do not get what figure means what.
Here are the codes:
So what do these codes mean?