Current Sense Resistors

Current Sense Resistors are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many current sense resistor manufacturers including Bourns, Caddock, KOA Speer, Ohmite, Panasonic, ROHM, SEI Stackpole, TT Electronics, Vishay, Yageo & more.

Current sense resistors are precision resistive components designed to measure electrical current by generating a proportional voltage drop across a known resistance value. These resistors enable accurate current monitoring and control while introducing minimal impact on overall circuit performance. They play a critical role in power management, system protection, battery monitoring, and efficiency optimization across a wide range of electronic applications.

Types: The most common current sense resistor types include metal strip resistors, shunt resistors, thick film current sense resistors, thin film current sense resistors, four-terminal current sense resistors, surface-mount current sense resistors, and high-power current sense resistors, each optimized for specific accuracy, power, and measurement requirements.

Applications: Current sense resistors are widely used in power supplies, battery management systems, motor drives, industrial automation equipment, electric vehicles, renewable energy systems, consumer electronics, and power monitoring circuits to measure, regulate, and protect electrical current flow.

Selection requirements: To choose current sense resistors, evaluate resistance value, power rating, tolerance, temperature coefficient, sensing accuracy, package type, thermal performance, current handling capability, and suitability for the intended electrical and environmental conditions.

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Please view our large selection of Current Sense Resistors below.