Johanson Manufacturing produces High Quality Trimmer Capacitors, Non Magnetic Variable Inductors and Microwave Tuning Elements.
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Johanson Manufacturing Corporation (JMC) is now part of the Knowles Capacitors group of capacitor manufacturing companies. Our corporate complement of highly trained individuals, whose first priority is the customer, reflects JMC's philosophy of excellence and provides uncompromising quality for total customer satisfaction. JMC is the industry standard of excellence.

With facilities located in the United States and the Dominican Republic, JMC is an outstanding, environmentally conscious global supplier. Knowles Cazenovia is certified to ISO 9001 + AS9100 and Johanson Dominicana S.A.S is certified to ISO 9001. State-of-the-art technology and equipment in the pristine facilities enable JMC to control the product from design through manufacturing.

JMC is a world-class supplier of trimmer capacitors, non magnetic variable inductors and microwave tuning elements. JMC offers a wide variety of variable capacitors for RF and microwave applications. Giga-Trim® capacitors are miniature capacitors designed for high resolution tuning of RF power circuits. JMC air capacitors are available in a variety of sizes and mounting configurations incorporating a one piece, self-locking, constant torque drive mechanism. Ceramic trimmer capacitors are available in surface mount, strip-line, and through hole lead styles. Microwave tuning elements are an economical means of tuning waveguides, cavities, and other microwave structures.

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