Johanson Manufacturing Corporation, headquartered in Boonton, New Jersey, USA, is a globally recognized manufacturer specializing in high-precision variable capacitors, trimmer capacitors, and microwave tuning elements for RF and microwave applications. Founded in 1945, the company has built a legacy of innovation in passive components for mission-critical systems. Its core product lines include air dielectric trimmer capacitors (Air Trim series), ceramic trimmer capacitors, microwave tuning elements (Giga-Trim® series), thin film trimmers, and tubular capacitors. The company also offers non-magnetic versions for medical and aerospace applications. Johanson’s products are widely used in telecommunications, satellite communications, defense electronics, medical devices, and industrial test equipment. With in-house design and manufacturing capabilities, the company ensures high Q factor, low dielectric loss, and exceptional reliability. Johanson Manufacturing is recognized as a trusted supplier by major OEMs and defense contractors worldwide. Its technical expertise in variable capacitor design enables precise impedance matching and frequency tuning in high-frequency circuits. The company continues to innovate with custom solutions and maintains a strong market presence in the niche sector of adjustable passive components.