What is a manufacturer code on a film capacitor?

Manufacturer Code: Some film capacitors include a manufacturer code or logo that identifies the company that produced the capacitor. This information can be valuable for quality control, identification of the capacitor source, and tracing the capacitor’s specifications.

What are film capacitors used for?

Film capacitors are widely used in power electronics applications including but not limited to DC Link, DC output fltering, and as IGBT snubbers.

What is the capacitance value of a film capacitor?

Capacitance Value: T he capacitance value of a film capacitor is expressed in units of farads (F) or microfarads (μF). Typically, the capacitance value is marked directly on the capacitor body, often using alphanumeric codes. For example, a marking of “473” indicates a capacitance value of 47,000 pF, which is equivalent to 0.047 μF.

What is the dissipation factor of film/foil capacitors?

The dissipation factor for film/foil capacitors is lower than for metallized film capacitors, due to lower contact resistance to the foil electrode compared to the metallized film electrode. The dissipation factor of film capacitors is frequency-, temperature- and time-dependent.

What is rated capacitance?

The rated capacitance is the value for which the capacitor has been designed. The actual capacitance of film capacitors depends on the measuring frequency and the ambient temperature. Standardized conditions for film capacitors are a measuring frequency of 1 kHz and a temperature of 20 °C.

What is a heavy-duty film capacitor?

Especially for applications with high current pulse loads or high AC loads in electrical systems, heavy-duty film capacitors, here called "power capacitors", are available with dielectric ratings of several kilovolts. But the manufacture of film capacitors does have a critical dependency on the materials supply chain.