Designed for premium applications: Milliohm Electronics' HoBH bare alloy resistors

① Precision – The Cornerstone of Reliable Current Sensing

The HoBH series leverages Milliohm Electronics' proprietary electron beam welding platform—an in-house designed and fully controlled manufacturing capability—integrated with high-precision machining and a comprehensive process quality system. This enables the series to achieve a tolerance of ±0.5%, satisfying the most stringent specifications for current sensing in high-performance electronic systems. By ensuring measurement accuracy at the component level, it prevents system-level failures and performance compromises, establishing a robust foundation for mission-critical equipment operation. The HoBH series represents a significant advancement in precision over conventional bare alloy resistors, positioning it as the solution of choice for industrial automation, automotive electronics, and defense systems where precision is non-negotiable.

② Low TCR – Unwavering Performance Across Temperature Extremes

Over a broad operational range of –55°C to +170°C, the HoBH series delivers a TCR of ±25 ppm/°C typical, with a maximum of ±150 ppm/°C, ensuring that resistance remains virtually immune to temperature fluctuations. The non-inductive construction, characterized by inductance below 3 nH, substantially reduces parasitic effects and supports clean signal transmission in high-frequency and high-voltage circuits. This combination of low TCR and low inductance directly resolves a persistent challenge in power electronics: maintaining resistor stability in thermally and electrically demanding environments.

③ High Power Density – Reliability That Drives Down Total Cost

Rated at 5 W continuous power and 158.11 A maximum current, the HoBH series is engineered to accommodate the substantial current demands of high-power systems. Unlike molded plastic-encapsulated resistors, it is free from package cracking risks and offers superior long-term endurance. Manufactured from high-grade alloy material, the series demonstrates outstanding resilience against surge events and thermal aging. Accelerated life testing and long-term reliability validation confirm that the HoBH series maintains its specified performance over extended service intervals—significantly reducing field failures, maintenance interventions, and replacement costs, and delivering measurable value over the equipment lifecycle.

④ Comprehensive Certifications – Confidence Built In

• Environmental Compliance: Full RoHS and REACH conformity

• Quality Management: IATF 16949 certified automotive-grade manufacturing processes

• Component Reliability: AEC-Q200 qualified for passive electronic components

From incoming material inspection to final outgoing quality control, every HoBH resistor is subjected to stringent testing protocols to guarantee compliance with both industry standards and customer requirements. These certifications, backed by Milliohm Electronics' robust quality assurance framework, ensure that the HoBH series delivers dependable, worry-free performance in even the most demanding high-end applications.

II. Multi-Dimensional Adaptability – Empowering Industry-Wide Transformation

The HoBH bare alloy resistor series, characterized by flexible specification options and superior performance characteristics, offers broad adaptability across high-end applications in industrial, automotive, and defense/aerospace sectors. By precisely addressing the core requirements of each industry, the series delivers the performance foundation necessary to drive technological advancement, establishing itself as the preferred component solution for industry leaders.

Industrial Sector – Ensuring Stable and Efficient Operations

In industrial applications including servo drives, energy storage systems, power modules, variable frequency drives (VFDs), charging stations, and power tools, the HoBH series leverages its high precision and high power handling capabilities to deliver accurate current sensing and voltage division, ensuring reliable equipment operation. Whether deployed in high-frequency servo drive systems or high-load energy storage installations, the series reliably accommodates the complex operating conditions typical of industrial environments—withstanding mechanical shock, thermal cycling, and other external disturbances—thereby minimizing equipment downtime and enhancing overall production efficiency.

Automotive Sector – Meeting Rigorous AEC-Q100/IATF 16949 Standards

As automotive electronics continue to advance toward greater intelligence and electrification, the demands on component reliability and stability have intensified significantly. The HoBH series, certified under the IATF 16949 automotive quality management system, is well-suited for a wide range of applications including battery management systems (BMS), distributed vehicle control units, and power distribution systems. With its ultra-low TCR and excellent surge withstand capability, the series reliably performs under the extreme temperature fluctuations and vibration profiles encountered in automotive operation, providing essential protection for vehicle electronic systems and supporting the industry's transition toward premium, electrified, and sustainable mobility.

Defense/Aerospace Sector – Safeguarding High-End Mission-Critical Equipment

Milliohm Electronics recently showcased the HoBH series at the Chengdu National Defense Industry Expo, where it received strong recognition from defense-sector customers for its high power density and precision performance. The series is applicable to a variety of mission-critical defense systems, including military-grade power supplies and control units. Having successfully passed rigorous qualification tests—including mechanical shock, high-temperature storage, and low-temperature storage—the HoBH series maintains stable performance under the most extreme conditions, meeting the uncompromising reliability requirements of defense equipment and contributing robust support to national security and aerospace technologies.

Additional Applications and Customization Capabilities

Beyond the core sectors highlighted above, the HoBH series is also widely deployed in industrial instrumentation, automation control systems, and variable-frequency drive applications. Milliohm Electronics offers customized solutions tailored to specific customer requirements, with resistance values ranging from 0.2 mR to 5 mR, and flexible options for tolerance and TCR to suit the unique specifications of diverse end products—delivering a true "one-stop" component sourcing solution.

III. The Milliohm Advantage – Built on a Foundation of Strength

The exceptional quality of the HoBH series is rooted in Milliohm Electronics' deep industry expertise and robust organizational capabilities. Established in 2009 and headquartered in Shenzhen, Milliohm Electronics is a nationally recognized High-Tech Enterprise and an SRDI (Specialized, Refined, Differentiated, and Innovative) enterprise. The company operates four manufacturing facilities located in Anhui, Foshan, Zhongshan, and Danyang, supported by eight sales offices across China. With a total production floor space of 30,000 m² and a workforce of over 400 employees—of whom more than 12% are dedicated to R&D—the company maintains a solid foundation for continuous product development and technological innovation.

Manufacturing Scale – Capacity That Delivers

Milliohm Electronics possesses significant manufacturing scale, with a monthly production capacity exceeding 400–450 million units for chip resistors, 150 million units for leaded/through-hole resistors, and 10–12 million units for shunts. This enables volume production and rapid delivery of the HoBH series, reliably meeting the large-volume procurement requirements of customers while maintaining stringent process controls to ensure consistent product quality across every batch.

Technology & R&D – Breaking the Monopoly

With a dedicated R&D team of over 50 technical professionals, Milliohm Electronics continues to deepen its expertise in alloy resistor technology, consistently refining product design and manufacturing processes. The HoBH series, evolved through multiple generations of iteration and enhancement—from dimensional optimization to performance upgrades—remains fully aligned with the latest industry trends. The series offers a fully capable alternative to established international brands, breaking the long-standing foreign monopoly on critical components and delivering a cost-effective, high-performance domestic substitution solution for customers worldwide.

Service & Support – A Commitment to Customer Success

Milliohm Electronics is supported by dedicated account management and FAE (Field Application Engineering) teams, delivering comprehensive technical support and after-sales service through an integrated online-and-offline service model. From product selection and technical consultation to installation guidance and troubleshooting, our professional team provides end-to-end support with rapid response to customer needs—ensuring a seamless procurement experience and trouble-free operation throughout the product lifecycle.

Precision in Resistance, Powering the Future

The HoBH bare alloy resistor series embodies Milliohm Electronics' commitment to precision engineering, technological excellence, and customer-centric service. With its core strengths of high precision, ultra-low TCR, and exceptional power handling, the HoBH series has become the component of choice for high-end electronic equipment across multiple industries. Milliohm Electronics remains steadfast in its corporate philosophy—"Precision Engineering, Powering the Future"—and is dedicated to driving continuous innovation and quality advancement. We look forward to partnering with industry peers to build a new era of high-quality development in the power electronics sector.