DMTL are fully franchised, authorised Johanson Mfg distributors.
Johanson Mfg has been acquired by Knowles Capacitors and is a premier global source for application specific multilayer ceramic capacitors and EMI suppression filters.
Johanson Mfg manufacture a wide range of products including Precision Trimmer (Variable) Capacitors, Microwave tuning elements and DRO tuners, Single/Half Turn Trimmer capacitors and Non-magnetic Inductors for MR applications.
They have the manufacturing capability to offer close tolerance machining and assembly and also have the ability to design custom solutions.
Johanson Mfg consider their strengths to be their wide range of trimmer solutions and their short lead times.
Their products are manufactured by plants in the USA and also the Dominican Republic, using State of The Art technology and equipment, whereby product is controlled right from design to finished manufacture. They offer a wide range of variable capacitors for RF and microwave applications. Giga-Trim® capacitors are miniature capacitors designed for high resolution tuning of RF power circuits.
Johanson Mfg's range of 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. Johanson Mfg also design and manufacture Microwave tuning elements which are an economical means of tuning waveguides, cavities, and other microwave structures.
As regards quality….Knowles Cazenovia is certified to ISO 9001 + AS9100 and Johanson Mfg Dominicana S.A.S is certified to ISO 9001.
As a result of DMTL’s longstanding relationship and success with Knowles ( SYFER), DMTL were awarded the Johanson Mfg Franchise in 2017.
Information for Knowles Capacitors
Date of Incorporation
Number of Employees
Factory Floor Space
1,771,000 sq ft
ISO 9001, ISO 14001, OHSAS 18001, IECQ-CECC, AEC-Q200, UL, TÜV, RoHS and REACH compliance.
Precision Trimmer (Variable) Capacitors, Microwave tuning elements and DRO tuners, Single/Half Turn Trimmer capacitors, Non-magnetic Inductors for MR applications