The type of domestic capacitors generally consists of four parts (not suitable for pressure-sensitive, variable, and vacuum capacitors). They respectively represent name, material, classification and serial number.

       The first part: the name, expressed in letters, and C for capacitors.

       The second part: materials, expressed in letters.

       The third part: classification, generally indicated by numbers, and individually indicated by letters.

       The fourth part: the serial number, expressed by numbers.

       Air conditioning parts capacitors use letters to indicate the material of the product: A-tantalum electrolysis, B-polystyrene and other non-polar films, C-high frequency ceramics, D-aluminum electrolysis, E-other material electrolysis, G-alloy electrolysis, H- Composite media, I-glass glaze, J-metallized paper, L-polyester and other polar organic films, N-niobium electrolysis, O-glass film, Q-paint film, T-low frequency ceramic, V-mica paper, Y- Mica, Z-paper