And since the reforming process takes time and equipment, production costs are further affected.Īll Japanese caps are considered of high quality, and we like to see the following cap brands: In many cases, they need reforming before use in order to avoid operating problems.

If the recommended storage period is exceeded, the capacitors need to be checked one-by-one (including ESR and capacity measurements). Electrolytic caps should be stored under specific conditions in order to retain their electrolytes, and especially for use in SMPS units, their storage period cannot exceed a specific threshold. The situation becomes even worse when you consider that you cannot order huge quantities of Japanese caps, store them for a prolonged period and then use them, since their performance will be greatly affected. Chinese cap companies can offer larger quantities, and if we take into account that in most high-end PSUs only Japanese caps are used, then it is more likely for availability problems to occur with Japanese caps. Of course, it is still much easier for Chinese PSU companies to acquire caps made by a Chinese factory. However, we believe enough Japanese companies have manufacturing facilities in China (along with many Taiwanese manufacturers), so the problem might not be as significant in some cases. Most PSU factories are located in China, so they have to import the capacitors from Japan, requiring additional time and shipping costs. However, there are two problems with using Japanese-made caps: their cost is higher and sometimes there are availability problems.

Psu tier list