Oct. 09, 2021
When it comes to electrolytic capacitors, people may also think of film capacitors. These two kinds of capacitors are often compared. In recent years, there have been such doubt likes "why are electrolytic capacitors replaced by film capacitors?" The reason why film capacitors can quickly replace electrolytic capacitors is because film capacitors have higher voltage resistance. And the ESR is low, the performance is stable, and the service life is long. While electrolytic capacitors will have some flaws, such as voltage problems, and their service life is not as good as film capacitors. Film capacitors quickly enter the market by virtue of their own advantages and have achieved good responses in the use of new energy vehicles.
The performance characteristics of film capacitors: 1) Maintain stable capacitance characteristics against temperature changes; 2) No maintenance required for more than 10 years in a high temperature environment; 3) Good withstand voltage performance, suitable for high voltage applications; 4) Sharp high frequency characteristics, superior filtering effect; 5) High ripple current tolerance, high current density per unit volume; 6) Low loss, so the product's own heating is suppressed, and energy saving can be achieved; 7) Ability of self-recovery;
Judging from the above-mentioned characteristics of the film capacitors, it has a high degree of overlap with new energy vehicles. It can also be said that film capacitors are an ideal choice for new energy vehicles. What would the future of film capacitors be if they want to make greater achievements in the automotive field in the future?
In addition to the above-mentioned fields, in recent years, film capacitors are mainly used in the field of new energy vehicles, and they need to meet the following requirements:
① Low cost brought by the popularization of electric vehicles;
② Light weight and miniaturization to improve unit efficiency;
③High voltage brought by high output;
New applications and technological iterations in the automotive field have proposed further miniaturization, support for high ripple current, high temperature and other performance of film capacitors. Therefore, the current development direction can be divided into the following five major parts:
① Support high ripple current by lowering ESR;
②Strengthen heat dissipation through optimized structural design;
③Strengthen the reliability by developing the materials of the components;
④The miniaturization is realized through the thin film of the dielectric film;
⑤ Realize high withstand voltage through the development of vapor deposition technology;
With the improvement of science and technology, the film capacitors will meet requirements in more industries as they are continued to be improved. Dongguan Zhixu Electronic Co., Ltd. (also JYH HSU(JEC)) has a full range of varistor and capacitor models with guaranteed quality. JEC has passed ISO9001:2015 quality management system certification; JEC safety capacitors (X capacitors and Y capacitors) and varistors have passed national certifications of the main industrial powers across the world; JEC ceramic capacitors, film capacitors and super capacitors are in compliance with environmental protection indicators. We have over 30 years of manufacturing experience. If you have technical questions or need samples, please contact us.
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