Is the capacitance accuracy of film capacitors as high as possible

Due to the limitations of materials and production technology, the film capacitors we currently produce cannot achieve zero error. The actual capacity of the film capacitors produced will have some errors. Theoretically, the smaller the capacity error, the better. How is the accuracy of film capacitors expressed? According to IEC standards, the accuracy ranges of capacitors are as follows:

Precision grade: D(±0.5%)、F(±1%)、G(±2%)

Conventional grade: J(±5%)、K(±10%)、M(±20%)

‌Broad Level‌:Z(+80%/−20%)、P(-0%~+100%)

Common capacitance accuracy range of film capacitors:

The capacitance error of film capacitors is relatively small. Taking the KYET series of film capacitors as an example, the common capacitance accuracy range is: J(±5%)、K(±10%)

Of course, if the circuits require higher capacitance accuracy, Keya can also produce precision-grade film capacitors.

Is it better for film capacitors to have higher capacitance accuracy?

The accuracy of film capacitors directly affects circuit performance. Low-precision capacitors can cause fluctuations in circuit frequency response, increased signal distortion, and potentially cause circuit failure.

The capacitance accuracy range of most film capacitors is J (±5%), which is sufficient for most circuits.

Generally speaking, the more precise the capacitance error of film capacitors is, the better the materials required, the more complicated the production process, or the use of a sorting machine to select the film capacitors with small capacitance error from the produced film capacitors, which will eventually lead to an increase in the cost of the capacitors.

       Therefore, the final choice of film capacitor accuracy range depends on the actual needs of the circuit.