ROHM Expands High-Accuracy EROM Models for Shunt Resistors

On November 20, 2025, ROHM Semiconductor announced an expansion of its EROM (Embeddable BCI-ROM) model lineup for shunt resistors, now available on the company's website. This new development includes the addition of the PMR series to the existing PSR series, catering primarily to the automotive and industrial sectors, where precise current detection and reliability are critical.

The enhanced EROM models boast remarkable accuracy, achieving a measurement deviation of ±5% for both surface temperature (?T) and thermal resistance. This level of precision is essential for thermal analysis that mirrors actual operating conditions, thereby improving simulation accuracy during the thermal design process. This enhancement not only accelerates development efficiency but also allows for more accurate predictions in thermal management, a vital component in the design of electronic systems.

Significantly, ROHM's EROM models have been standardized within Siemens’ Simcenter™ Flotherm™ electronic thermal design software, version 2510 and later. This integration facilitates seamless thermal analysis data exchange between component and set manufacturers while preserving the confidentiality of proprietary information. This means that engineers can easily conduct simulations based on reliable data, streamlining the overall design process.

In a commitment to supporting customer design and development initiatives, ROHM plans ongoing enhancements to its high-performance components and advanced simulation models. The company's efforts aim to address the evolving needs of the market while ensuring that its products maintain a leading position in terms of reliability and efficiency in current detection applications. For more information on the usage of these thermal simulation models, ROHM provides detailed guidance through its application notes.

ROHM Semiconductor's recent expansion of its EROM (Embeddable BCI-ROM) models for shunt resistors signifies a strategic advancement in the automotive and industrial equipment sectors. With the integration of the PMR series into their lineup, alongside established models like the PSR series, investors have critical insights to consider.

The precise measurement capabilities of ROHM’s EROM models, with a deviation of less than ±5% for both surface temperature and thermal resistance, elevate their significance in thermal analysis. This precision aligns directly with the increasing demand for reliable thermal management solutions in advanced engineering applications. As consumers and industries progressively lean towards electric vehicles (EVs) and smart technologies, ROHM's focus on high-accuracy detection emerges as a competitive differentiator.

Moreover, with these models now standard in Siemens’ Simcenter™ Flotherm™ software, ROHM facilitates smoother collaboration between component manufacturers. This not only enhances the accuracy of thermal simulations but also preserves proprietary data, an essential feature for customers concerned about intellectual property. As industries evolve, the demand for tools that enhance collaboration and maintain confidentiality will become paramount.

Investors should consider the implications of ROHM's initiatives. By actively improving thermal simulation accuracy during design phases, the company positions itself as a trusted partner in high-performance component supply, which could subsequently bolster market share. Additionally, ROHM's commitment to customer support through these innovative updates underscores a forward-thinking approach that could yield long-term growth.

In conclusion, ROHM's expansion of EROM models signals a robust opportunity for stakeholders to invest in a firm poised to capitalize on emerging trends in technology-driven industries. Potential investors should closely monitor ROHM's developments and market positioning, particularly as it relates to the ongoing shift towards electrification and efficiency in thermal management systems.