Shunt resistors are core passive components for current sampling, power monitoring and closed-loop control of power supplies. They convert precise current values through voltage drop generated by milliohm-level low resistance, and are widely applied in automotive electronic control systems, energy storage inverters, industrial frequency converters, BMS battery management systems, precision measuring instruments and other fields. Requirements for power load, temperature coefficient, accuracy grade, packaging form and temperature resistance range of shunt resistors vary greatly across different applications. Combined with technical accumulation and market performance of mainstream global electronic component manufacturers, this article sorts out mainstream brands, exclusive series, parameter features and applicable scenarios of shunt resistors in three categories: Japanese precision automotive-grade brands, European & American industrial/military-grade brands, and cost-effective domestic brands, balancing practical selection value and professional technical reference.

ROHM boasts the most comprehensive shunt resistor product lineup among Japanese manufacturers. It adopts metal plate alloy technology and resistance trimming-free structure to reduce temperature drift error, covering small-power SMD to high-power ultra-low resistance scenarios with clear segmentation of each series:

• PSR Series: High-power ultra-low resistance metal plate shunt resistors, rated power 3W~15W, resistance range 0.1mΩ~3mΩ. Integrated electron beam welding structure delivers outstanding heat dissipation, operating temperature ranges from -65℃ to 175℃. Designed for high-load circuits such as high-current fast charging systems, energy storage converters and automotive motor drives, ultra-low parasitic inductance effectively avoids sampling deviation under high-frequency operating conditions.
• GMR Series: Medium & high-power metal plate shunt resistors, power rating 4W~10W, resistance range 5mΩ~220mΩ. Optimized substrate heat dissipation structure ensures stable TCR performance, suitable for automotive power supplies, industrial switching power supplies and high-power home appliance main control boards, balancing compact size and overload resistance.
• PMR Series: Standard universal SMD metal plate shunt resistors, available in full SMD sizes from 1005 to 6432, power 0.25W~5W with wide resistance coverage. Ideal for consumer electronics power modules, small industrial control boards and portable energy storage devices, featuring superior mass production consistency and compatibility with automated SMT assembly罗姆半导体....
• LTR/LTRL Series: Long-side electrode thick film shunt resistors. Long electrode layout minimizes lead resistance; 3264 package supports up to 4W rated power with ±0.5% tolerance, designed for conventional low & medium current sampling circuits including power adapters and compact chargers with controlled costs.

A benchmark Japanese brand for automotive-grade current sensing components, renowned for excellent surge resistance and pulse impact tolerance. Core shunt product: RK Series Current Sensing Shunt Resistors: Manganin alloy substrate, TCR ≤15ppm/℃, accuracy options from ±0.1% to ±1%, mainstream SMD packages ranging from 0805 to 2512. Passed strict automotive vibration and temperature cycling tests, widely adopted in EV on-board chargers, vehicle low-voltage power distribution systems and industrial servo drive closed-loop current sampling, with negligible resistance drift under long-term load operation.

A time-honored Japanese manufacturer specializing in precision instrument resistors, focusing on thin-film precision technology for shunt resistors: SMD Precision Current Sensing Shunt Series: Maximum accuracy up to ±0.25%, TCR below 10ppm/℃, package sizes 0402~2512. Non-magnetic & non-inductive design perfectly fits medical testing equipment, desktop multimeters, laboratory precision power supplies and other devices requiring ultra-high sampling accuracy, extensively adopted as original components in Japanese precision instruments.

Global leader in passive electronic components, with two major shunt resistor product lines: precision alloy SMD shunts and high-power plate shunts, dominating heavy-duty industrial and power metering markets:

• WSBS Series: 4-terminal Kelvin high-power plate shunt resistors with manganin alloy resistive core, maximum power 20W, capable of handling hundreds of amps continuous current, TCR 15ppm/℃. The Kelvin structure completely eliminates sampling errors caused by lead resistance, applied to photovoltaic inverters, high-power EV chargers, industrial rectifier power supplies and electricity metering cabinets for accurate energy measurement.
• Dale SPR Series: Axial through-hole 4-terminal precision shunt resistors, low thermal EMF design, tolerance ±0.5%~±1%, widely used in laboratory calibration sources, military power supplies and railway on-board power systems with verified long-term stability under harsh environments.

Completed heavy-duty shunt resistor portfolio via acquisition of Riedon Industrial Shunt Division, focusing on bus-mounted and panel-mounted high-current shunt resistors: RSN/RSH/RSW Full Industrial Shunt Series: Resistance range 0.025mΩ~100mΩ, current capacity 1A~6000A, manganin substrate, operating temperature -40℃~100℃. Two installation forms (panel fixed & direct bus mounting) are available for metallurgical heat treatment equipment, marine power systems, large-scale energy storage power stations and welding power supply ultra-high current monitoring, with minimum tolerance down to ±0.25% and outstanding durability under heavy industrial operating conditions.

Leading domestic passive component manufacturer with complete automotive and industrial certifications: CSR Alloy Current Sensing Shunt Resistor Series: FeCrAl alloy substrate, TCR ≤25ppm/℃, tolerance ±1%, full packages from 0603 to 2512, compliant with RoHS lead-free environmental standards. Suitable for small home appliance power supplies, power banks and compact industrial control modules, featuring prominent cost advantages for mass procurement and stable delivery cycles.