Ohmite Manufacturing Co. Datasheets for Wirewound Resistors

Wirewound resistors are power resistors made by winding a metal wire around a core.
Wirewound Resistors: Learn more

Product Name Notes
Axial Terminal / Surface Mount / Heat Sinkable Packaging -- 30 Series 30 Series High Energy Wirewound Axial Terminal / Surface Mount / Heat Sinkable Packaging Wirewound Resistors employ special winding techniques to maximize the effective joule rating of each resistor. Most...
Miniature Wirewound Current Sense Resistor -- WL Series Miniature Wirewound Current Sense Ultra-low ohmic value series for Current Sensing applications The WL series contains very low inductance (<1nH at 1MHz Test) with miniaturized dimensions giving a great power...
Aluminum Housed Wirewound Power -- WFH Series Aluminum Housed Wirewound Power Ohmite’s new flat core winding technology allows for wirewound heatsinkable resistors affording a very low profile, and superior thermal transfer characteristics when compared to conventional aluminum...
Audio Gold Resistor -- Audio Gold Resistors Tubular Wirewound Ohmite now offers the Audio Gold Resistor Family, specifically designed for high-end loudspeaker and amplifier applications. These resistors utilize high quality resistance wire wound on a ceramic core,...
Cold Rolled Steel Encased Wirewound Resistor -- Metalohm Series Wirewound Heatsinksble Radial Terminal Features: • Flameproof and inorganic • Higher power rating due to heat sink capacity • All welded construction • Nonhygroscopic • High surge construction Options: •
ARCOL Precision Power Wirewound SMD Resistor -- RWS Series A compact and precision power resistor, manufactured to the highest standards; reliable and robust but still achieving drift of less than 1% and TCR of 10-90ppm/˚C when under rated conditions.
Economical Silicone Coated Wirewound -- 50 Series Automated winding, in-line color banding, and testing allow for an economically priced, industrial grade wirewound power resistor. The Ohmite 50 series resistors feature an all welded construction with a high...
ARCOL Low Profile Wirewound Metal Clad Resistors -- ARF Series Flexible design with high pulse capability, ideally suited to braking and inverter / converter applications. Enhanced power levels can be achieved when heatsink mounted. High power density Low profile 600V...
ARCOL Aluminum Housed Resistors -- HS Series HS Aluminum Housed Resistors Manufactured in line with the requirements of MIL 18546 and IEC 115, designed for direct heatsink mounting with thermal compound to achieve maximum performance. High Power...
Ohmicone® Silicone-Ceramic Conformal Axial Terminal Wirewound -- 40 Series Ohmite 40 Series resistors are the most economical conformal silicone-ceramic coated resistors offered. These all-welded units are characterized by their low temperature coefficients and resistance to thermal shock, making them...
Centohm Coated Axial Terminal Wirewound Resistor -- Axiohm® Series Ohmite Axiohm series is best known for its inorganic flameproof coating and ability to be produced in tight tolerances. The Axiohm series was designed to meet or exceed the characteristics...
Wirewound Potentiometers -- Rheostats Ohmite rheostats have been in use since 1925. The same robust design is used today and continues to find new applications. The use of resistance wire and an adjustable arm...
High Power SMD Wirewound Resistor -- RW5 and RW7 Series Omite has used its thermal management expertise to produce a unique resistor design. The resistor body incorporates fins identical to a heatsink. These fins, as with a heatsink, increase the...
Vitreous Enamel Conformal Axial Terminal Wirewound Resistor -- 20 Series The 20 Series axial terminal resistors are both durable and economical. They have all the electrical attributes of more expensive wire wound axial resistors, including all-welded construction. The extensive wattage...
Metal-Mite® Aluminum Housed Resistor -- 89 Series The 89 Series is a high-performance axial heatsinkable resistor. These molded-construction metal-housed resistors are available in higher power ratings than standard axial resistors and are better suited to withstanding vibration,...
High Precision Welded Axial and Radial Resistor -- HPW Series The HPW wirewound series of resistors are produced for high precision applications. The HPW series can be produced below 0.1% on request with Temperature Coefficients matching to 1ppm. The HPW...
Tubular Radial Terminal Wirewound Resistors -- PC-58 Series The PC-58 series is designed for direct insertion into printed circuit boards; fit standard 0.10 inch matrix boards with standard 0.046 inch diameter holes. The PC-58 radial design and provided...
Ceramic Housed Axial Terminal Power Resistor -- TUM/TUW Series The TUM/TUW Series resistors are Ohmite’s most economical power resistors. Sizes up to 15 watts and resistance values up to 150K ohms are available. Two constructions are used to obtain...
Ceramic Housed Radial Terminal Power Resistor -- TWM/TWW Series The TWM/TWW series radial terminal power resistors offer significant board space savings over axial terminal products and keep generated heat away from the circuit board. They are recommended for commercial...
Miniature Molded Wirewound Resistor -- WH/WN Series WH/WN series contains two winding techniques. The WH is a standard wirewound resistor while the WN is wound using in the Aryton Perry non inductive style. The inductance of the...
Lead Free Vitreous Enamel Molded Axial Term. Wirewound -- 90 Series When you need the highest quality wirewound axial terminal resistors available, choose Ohmite’s 90 Series resistors. They are manufactured by a unique process that molds the vitreous enamel over the...