Syfer Technology Ltd is an English company, since 2000 it has been a division of the Dover Corporation, and in this capacity it is part of Ceramic Microwave Products (CMP). Syfer has been producing multilayer ceramic capacitors for 35 years. In addition to capacitors, the company also develops and produces a number of EMI filters, including for printed mounting. The company's products are used in telecommunications, power supplies, aerospace, automotive industries, inverters and LCD backlight systems.

Syfer is certified according to the ISO 9001:2000 and ISO 14001:2004 systems.