Most manufacturers stamp codes on the side of their capacitors to help you identify their properties. Listed below are several types of codes, and their meanings.

Tolerance Codes:	Temperature Coefficients:
C = +/-.25pf D = +/-.5pf F = +/-2% G = +/-3% J = +/-5% K = +/-10% M = +/-20% Z = -20% to +80%	NPO: +/-30% from -55c to +125c X7R: +/-15% from -55c to +125c Z5U: +22% to -56% from +10c to +85c Y5V: +/-22% from -30c to +85c