High Power and Ultra-High Power Resistor Brands and Series Recommendations

High-power and ultra-high-power resistors are critical components in power electronics, industrial drives, energy storage systems, and automotive electronics. Below is a comprehensive overview of mainstream international and domestic brands with their representative series.

I. International Brands

1. Bourns

Bourns offers a complete portfolio of high-power resistors covering SMD to chassis-mount packages.

• BRF Series (Precision Power Foil Resistors): Designed for high-energy pulse applications, with power ratings up to 2500 W and TCR as low as ±15 ppm/°C. Available in 2-terminal and 4-terminal options, with terminal current ratings up to 150 A.

• PF2472 Series (TO-247 Thick Film Resistors): Delivers up to 100 W with a heatsink, operating voltage up to 700 V, resistance range 0.1 Ω to 20 kΩ, tolerance ±1%, ultra-low inductance <50 nH.

• PF2270 Series (TO-227 Thick Film Resistors): Dissipates up to 300 W with a heatsink, resistance range 100 mΩ to 100 kΩ, operating temperature up to +175 °C.

• PSD Series (TO-Package Power Resistors): Available in TO-126, TO-220, TO-227, and SMD DPAK packages, with power ratings from 25 W to 200 W.

• PWR Series (SMD Wirewound Resistors): Including PWR6927/8030/8937/A247/B053, with maximum power rating of 10 W and high pulse withstand capability.

• CHP-Q Series (Automotive Ultra-High Power SMD Resistors): AEC-Q200 qualified, available in five sizes from 0603 to 1206, with power ratings from 0.33 W to 0.75 W.

2. Vishay

Vishay is a global leader in high-power resistors, offering SMD, chassis-mount, and liquid-cooled solutions.

• DCRF Series (Direct Water-Cooled Wirewound Resistors): Delivers up to 9000 W power dissipation in six compact sizes from 38 mm × 178 mm to 38 mm × 410 mm.

• RX Series (High-Power Flange Resistors): Power range from 20 W to 1200 W, flange mount, resistance range 10 Ω to 1 kΩ, tolerance ±5%.

• RCEC2000 Series (Thick Film Power Resistors): 2000 W power rating, with HV version up to 12 kVRMS.

• CRCW-HP e3 Series (Pulse-Proof High-Power Thick Film SMD Resistors): 0603 package rated at 0.25 W, equivalent to standard 1206 power levels.

• Power Metal Strip Series: Including WSL, WSLP, WSR, WSHM2818, with power ratings up to 10 W. WSL...18 high-power series features resistance as low as 0.001 Ω, TCR < 20 ppm/°C, and inductance of 0.5 nH to 5 nH.

• PR Series (Power Metal Film Resistors): PR01 (0.6 W/1 W), PR02 (1.2 W/2 W), PR03 (1.6 W/3 W), resistance range 0.22 Ω to 1 MΩ.

3. TE Connectivity

• BDS Series (Thick Film High-Power Resistors): Provides 1000 W and 2000 W power dissipation in a 76 mm × 76 mm case, resistance range 500 mΩ to 1000 Ω. Operating temperature range -55 °C to +85 °C, inductance below 40 nH.

• HS Series (Aluminium-Housed Power Resistors): Wirewound technology with aluminium housing for efficient heat dissipation, power ratings from 5 W to 500 W.

• 3503/3504 Series (AlN Thin Film Power Resistors): 1206 size (3503) at 2 W, 2512 size (3504) at 6 W, with high power density.

4. Ohmite

• TAP Series (Heatsinkable Planar Resistors): TAP600 (600 W), TAP650 (650 W), TAP800 (800 W), TAP2000 (2000 W). Designed for low inductance and capacitance, suitable for variable speed drives, power supplies, robotics, and motor control.

• 280 Series (Chassis-Mount Wirewound Resistors): Power ratings up to 300 W.

5. Stackpole Electronics

• RMAN Series (Thick Film High-Power AlN Substrate Resistors): 1206 package rated at 2.4 W, 2512 package rated at 3.4 W.

• RNAN Series (Thin Film High-Power AlN Substrate Resistors): 0603 up to 0.5 W, 0805 up to 1 W, 1206 up to 2 W, 2512 up to 6 W.

• RMCA Series (Automotive-Grade Chip Resistors): Available in high-power (-HP) and ultra-high-power (-UP) options.

6. KOA

• BGRV/BSRV/BWRV Series: Designed for EV pre-charge and discharge circuits, capable of withstanding high surge currents.

• WK73S Series (Wide Terminal High-Power Resistors): Power ratings from 1.5 W to 3 W.

• TLR Series (Metal Plate Current Sense Resistors): 1206, 2010, 2512 packages, power ratings from 1 W to 5 W.

II. Domestic Brands

1. FOJAN

• FCM Series (Bare-Chip High-Power Alloy Resistors): Covering 2512, 3920, and 5930 packages, power ratings from 3 W to 15 W, resistance 0.1 mΩ to 5 mΩ. Features thickened alloy substrate with external aluminium heatsink, TCR as low as ±50 ppm/°C, precision up to ±0.5%, AEC-Q200 qualified.

• FPM Series (2512 High-Power SMD Series): 3 W compact solution.

2. UNI ROYAL

• HP Series (High-Power Thick Film Chip Resistors): Covering 0402 to 2512 packages, power ratings from 1/10 W to 2 W.

• SP Series (Ultra-High Power Thick Film Chip Resistors): Power ratings up to 6 W.

• HQ Series (Automotive-Grade High-Power Resistors): AEC-Q200 compliant.

3. EVER OHMS

• CRH Series: High-power SMD resistors, 2512 package up to 2 W.

III. Authorized Distributors

Shenzhen Shunhai Technology Co., Ltd. , established in 2012 and headquartered in Shenzhen, is a professional technical distributor specializing in semiconductors and passive components. Shunhai Technology is the primary authorized distributor for EVER OHMS in mainland China, representing the full range of EVER OHMS resistor products including alloy resistors, current sense resistors, precision SMD resistors, anti-sulfur resistors, and automotive-grade resistors. Shunhai Technology is also an authorized distributor for Sunway Microelectronics.

Huanian Mall (www.hnstshop.com) , as a professional online platform for electronic components, has officially launched the full range of EVER OHMS products, providing engineers with convenient selection and procurement services. Huanian Mall also offers comprehensive product information and technical support for high-power resistors.

IV. Selection Guide

When selecting high-power resistors, engineers should evaluate power dissipation capability, thermal management conditions, package type, resistance range, TCR, and cost considerations. All the above brands and series are available through Shenzhen Shunhai Technology and Huanian Mall with professional technical support and procurement services.