CONTACT US Distributors Products Applications Design In Support Sales & Services Resources Product Search Home About Vitrohm News Wirewound resistors: more than just precision and power resistors May 26, 2021 A wirewound resistor is an electrical passive component that limits current flow on an electrical circuit. As the name indicates, wirewound resistors consist of a resistive wire, with different alloys, wounded around an insulating substrate, to achieve the desired ohmic value, and can be finished with a protective coating, ceramic case or moulding. For a wirewound to be used on the end application, the resistive wire has to be connected to the terminal leads. The first and therefore the oldest resistor technology initially used only for precision and power applications, is nowadays used in several applications. The application requirements determines the selection of winding, contacting method and partly also the type of finishing. Wirewound resistors are distributed into some major categories according to their mains characteristics and application. Safety Wirewound Resistors Coated through hole wirewound resistors, coated with the flame retardant coating, that ensure safe and silent fusing operation in overload conditions. A compact moulded SMD version and a SMD Z version are also available. Through hole safety wirewound resistor SMD safety wirewound resistor Precision Wirewound Resistors Coated through hole wirewound resistors specially used when high accuracy is needed with a narrow tolerance. A precise resistive wire alloy is used to guarantee the resistor precision during application. A compact moulded SMD version and a SMD Z version are also available. Through hole precision wirewound resistor SMD precision wirewound resistors Pulse Wirewound Resistors Coated through hole wirewound resistors with special construction to be able to withstand short duration impulse events, up to rated limits. The pulse-capability can be customized according to application. A compact moulded SMD version and a SMD Z version are also available. Through hole pulse wirewound resistor SMD pulse wirewound resistor Fusible Wirewound Resistors Moulded and Ceramic case through hole wirewound resistors that have characteristics of fusing without flames or without excess heat generation when the current load jumps suddenly more than required. A compact moulded SMD version is also available. Through hole fusible wirewound resistors SMD fusible wirewound resistor General Purpose Wirewound Resistors Coated and moulded through hole wirewound resistors that can be used in various devices and circuits suitable for general applications. Resistors used in circuits with a low cost, a good performance and high component reliability. A compact moulded SMD version is also available. Through hole general purpose wirewound resistors SMD general purpose wirewound resistor Power Wirewound Resistors Ceramic Case and Aluminum House wirewound resistors designed to withstand and dissipate large amounts of power. Power wirewound resistors For more information about available wirewound resistor, check our “How to choose the right resistor” infographic. Back FOLLOW US NEWSLETTER Get all VITROHM updates in your email. Subscribe I accept Vitrohm Privacy Policy. I wish to receive information from Vitrohm on my email. ABOUT VITROHM The Company History Vitrohm RoHS Compliance Quality REACH Compliance Environment & Safety News CONTACT US Contact Form Careers Feedback Terms of Use Site Map Privacy Policy Imprint © VITROHM 2015 All rights reserved