WIMA has a long history in the field of passive electronic components. The company was founded in 1948 by Wilhelm Westermann in Westphalia, Unna. Within a few years, he developed the company into one of the leading companies in the capacitor manufacturing industry. WIMA has four locations in Germany: a sales department and a research and development centre in Mannheim as well as three state-of-the-art manufacturing plants in Aurich, Berlin and Unna. The continuous pursuit of new technologies has made WIMA the preferred brand for high-quality film capacitors worldwide.