When we talk about two-character marking code for capacitors, we're talking about a way of labeling or identifying different types of capacitors. A capacitor is a little device that can store electrical energy, like a tiny battery.
These two-character codes are like little codes that tell you important information about the capacitor, like what kind of material it's made of, how much energy it can store, and how strong it is.
The first character in the code usually represents the type of material used in the capacitor. For example, "C" might stand for ceramic, "M" for metal film, and "P" for plastic film.
The second character usually represents the amount of energy the capacitor can store or the voltage it can handle. So for example, "10" might mean it can store ten picofarads of energy, while "100" might mean it can handle up to 100 volts of electricity.
So basically, the two-character marking code is like a special language that helps people who work with electronics figure out which capacitors they need to use for different projects.