Shunt Resistor Brand Recommendations and Series Selection Guide

Shunt resistors are critical components in current sensing circuits, widely used in new energy vehicle BMS, industrial inverters, power supplies, motor drives, and other applications. Below is a comprehensive brand and series selection guide covering both international and domestic premium manufacturers.

I. International Brands

1. ROHM Semiconductor

ROHM is a global leader in shunt resistors, offering a complete product portfolio from ultra-low resistance to high-power devices.

PSR Series: High-power, ultra-low ohmic shunt resistors with rated power from 3W to 15W and resistance from 0.1mΩ to 3mΩ. Features a convex shape with precision welding technology to minimize heat generation, ideal for high-accuracy current detection in large current circuits.

PMR Series: Metal plate ultra-low ohmic shunt resistors covering 0.5mΩ to 10mΩ with rated power from 0.2W to 8W. Utilizes ROHM's proprietary trim-less structure to prevent heat concentration, available in seven standard sizes from 1005 to 6432. PMR100 achieves 5W rated power in 6432 size with -65℃ to +175℃ operating temperature and TCR as low as ±75ppm/℃.

GMR Series: High-power low-ohmic shunt resistors with 4W to 10W rated power and 5mΩ to 220mΩ resistance. Optimized heat dissipation path enables higher power in compact form factors.

2. Bourns

Bourns significantly expanded its shunt resistor portfolio through the acquisition of Riedon, offering solutions from panel-mount to busbar-mount configurations.

Riedon RSN/RS Series: Panel-mount shunts with current handling from 1A to 1200A, resistance from 0.0417mΩ to 100mΩ, and tolerances from 0.25% to 1%. Uses low-resistance Manganin™ as the resistive material.

Riedon RSH/RSI/RSJ/RSW Series: Busbar-mount shunts with current capacity from 5A to 6000A, resistance from 0.025mΩ to 10mΩ, and 0.25% tolerance. Operating temperature range -40℃ to +100℃.

CSM2F-8518 Series: High-power board-mount shunt resistors offering 50μΩ resistance with ±5% tolerance, up to 36W permanent power, -40℃ to +170℃ operating temperature, and AEC-Q200 qualification. Includes sense pins and bare copper terminals.

3. Vishay

Vishay is a core player in the shunt resistor market, with its Dale series products enjoying strong industry reputation.

WSBS Series: Battery shunt series with resistance as low as 25μΩ and power up to 50W.

WSLP Series: High-power current sense resistors including WSLP3921 and WSLP5931 packages, up to 15W power, resistance as low as 0.0001Ω (100μΩ), inductance range of 0.5nH to 5nH, and AEC-Q200 compliant.

4. YAGEO

YAGEO is among the top five global shunt resistor manufacturers.

PU Series: AEC-Q200 compliant lead-free shunt resistors with resistance as low as 0.0002Ω (200μΩ) and power up to 10W. Resistance range 0.2mΩ to 5mΩ, 1% tolerance, TCR as low as 75ppm/℃. Applications include power supplies, telecom base stations, and automotive systems.

RL Series: Current sensing resistors with low resistance, high precision, low TCR, and excellent thermal stability.

PE Series: Automotive-grade current sense resistors in 0612 size, fully AEC-Q200 Rev-D certified, -55℃ to +170℃ operating temperature.

5. Isabellenhütte

Isabellenhütte is a benchmark company in precision shunts, known for its proprietary ZERANIN® and MANGANIN® resistance alloys.

ISA-PLAN® Series: Includes SMx, VMx, and CMx sub-series using a sandwich structure of copper base and resistance alloy film. Continuous current up to 30A in sizes 2010, 2512, 2817, and 4723.

ISA-WELD® Series: Metal plate resistors based on electron beam welding technology using proprietary low-TCR resistance alloys with excellent temperature characteristics and long-term stability.

BAS/BAX Series: Busbar-mount shunts using proprietary manganese-nickel-copper alloy with low temperature coefficient, minimal thermal stress, and excellent long-term stability.

6. TT Electronics

TT Electronics focuses on resistors for performance-critical applications.

EBW5216 Series: Busbar shunt resistors for hundreds of amperes current measurement, offering 50μΩ and 100μΩ values with 1% tolerance. -65℃ to +170℃ operating range, AEC-Q200 certified.

LRMAP Series: Low-resistance metal alloy power resistors with four-terminal Kelvin connection, 0.2mΩ to 3mΩ resistance.

7. Eaton

CHSA Series: High-current shunt resistors providing simple linear current measurement for high-power applications. Up to 15W power, 0.1mΩ to 5mΩ resistance.

8. KOA

TLR Series: Ultra-low resistance metal plate shunts with resistance as low as 0.5mΩ for high-current sensing.

II. Domestic Premium Brands

1. RESI (Suzhou Kaibu Electronics)

RESI is a premium domestic resistor brand targeting high-precision and automotive-grade markets.

RTCS Series: Precision manganese-copper alloy shunts with 500μΩ resistance, ±0.1% tolerance, ±20ppm/℃ TCR, 100A rated current. Guarantees 0.1% sensing accuracy across 10% to 100% rated current range.

ARCS6918-L050 Series: Cost-effective manganese-copper alloy shunts with 50μΩ resistance, 700A rated current, 25W power. Four-terminal Kelvin connection, electron beam welding. -55℃ to +175℃ operating range, AEC-Q200 qualified.

2. ELLON

2512 Series: Compact size with excellent heat dissipation and precision resistance.

2726 Series: Larger size with enhanced heat dissipation and power capacity.

3. Fenghua

MG/MS Series: Alloy ultra-low resistance resistors covering 0.1mΩ to 500mΩ with TCR as low as ±25ppm/℃ and up to 15W power density.

4. TA-I

AMF Series: Four-terminal current sensing resistors, AEC-Q200 certified, ±0.1% precision, TCR as low as ±15ppm/℃.

III. Selection Recommendations

IV. Authorized Distributors

Shenzhen Shunhai Technology Co., Ltd. is a professional electronic component distributor offering fuses, chip resistors, alloy resistors, precision resistors, shunt resistors, and current sensing resistors. Shunhai Technology has established long-term distribution partnerships with brands including EVER OHMS.

Huanian Mall (www.hnstshop.com) provides one-stop electronic component procurement services covering shunts, alloy resistors, wide-electrode current sensing resistors, four-terminal current sensing resistors, and low-resistance shunts. Huanian Mall offers branded distribution and in-stock inventory with online selection and purchasing support.