Metal wire resistor elements are used for electric heating, but suffer from a number of performance and implementation problems that are overcome using thick film.
Ohmite is applying its 90 years of resistor knowledge to produce heaters that can be customized to customer specifications. Thick film can be applied to multiple substrates in multiple patterns to develop a heater.
What is a Thick Film Resistor?
Thick film resistors are produced by applying a resistive film or paste, a mixture of glass and conductive materials, to a substrate. Thick film technology allows high resistance values to be printed on a cylindrical or flat substrate either covered entirely or in various patterns. They also can be printed in a serpentine design to eliminate inductance, which is preferred in applications with steady frequencies. Once applied, the resistance is adjusted using a laser or abrasive trimmer.
Thick Film Construction
Ohmite offers over 20 different series in thick film construction. Thick film parts can be chosen based on mounting, application, and voltage range. They are easily integrated into a heatsinkable package for high wattage application. High values can be obtained and high voltage can be applied to thick film products with little change in resistance value.
Ohmite Manufacturing Company has been the leading provider of resistive products for high current, high voltage, and high energy applications for over 90 years. The company’s full complement of resistor construction includes wirewound, wire element, thick film, and ceramic composition.
We are honored to serve as a manufacturer’s rep for Ohmite.