Effect of Thin Film Capacitor Production on Parametric Variables

What is the influence of thin film capacitance on the parameter variables, including these four factors, namely capacitance, loss tangent, insulation resistance, and withstand voltage. The production of thin-film capacitors is also closely related to ensuring the compliance of these four parameters. The process element that causes the capacitance to deviate during the manufacturing process The capacitance of the wound film capacitor C = 0.177ε s / dε is the dielectric permittivity s is the effective area of the plate d is the dielectric thickness The capacitance is proportional to ε, s , inversely proportional to d.

In the production process, these parameter variables will change, resulting in capacity error. The core of the process is to reduce these errors and increase the capacity hit rate. Winding process: The coating width, thickness, or margins, etc., are themselves deviated. The tension of the film changes from large to small, and the error of the tension of each winder. Roller pressure is too low. Winding process deviation, wrong side error.

When the air humidity is high, the core capacity is too large. Hot pressing process: uneven core thickness error force, resulting in the core will be loose and tight capacity dispersion, hot platen uneven, temperature error. Immersion in the heat treatment time or temperature error: vacuum error, time error, curing temperature error.