ROHM’s New General-Purpose Chip Resistors Contribute to Greater Miniaturization

　　ROHM has expanded its portfolio of general-purpose chip resistors with the MCRx family. It is designed to achieve greater miniaturization and enhanced performance across a variety of applications. The new lineup includes the high-power MCRS series and low-resistance, high-power MCRL series.

　　In today's era of advancing functionality and electrification, the increased miniaturization and improved performance of electronic components have become critical issues. This is especially evident in the automotive market, where the proliferation of electric vehicles (xEVs) is accelerating the use of electronic components. Similarly, the industrial equipment market is experiencing growing demand for compact, high performance electronic components as machinery becomes more functional and efficient. ROHM addresses both of these needs with the MCRx family of compact, high-performance resistors.

　　The MCRS series improves rated power and TCR (Temperature Coefficient of Resistance) characteristics by optimizing the internal structure and incorporating new materials, enabling use in a smaller size compared to conventional products. A broad lineup in sizes ranging from 0402-size (0.04inch × 0.02inch) / 1005-size (1.0mm × 0.5mm) to 2512-size (0.25inch × 0.12inch) / 6432-size (6.4mm × 3.2mm) is available, making it possible to select the ideal product based on mounting space requirements. This leads to a compact, efficient circuit design, significantly increasing design flexibility. Meanwhile, the MCRL series, a low-resistance variant of the MCRS series, is offered in sizes ranging from 0805-size (0.08inch × 0.05inch) / 2012-size (2.0mm × 1.2mm) to 2512-size (0.25inch × 0.12inch) / 6432-size (6.4mm × 3.2mm) ideal for current detection applications.

　　The MCRx family adopts a redesigned internal structure, improving production efficiency, quality, and product reliability across all sizes. Compliant with the AEC-Q200 automotive reliability standard, this series meets the increasing demand for electric vehicles (xEVs) while contributing to market expansion in communications infrastructure such as base stations and servers as well as factory automation equipment. In addition, the products are designated for long-term stable supply, supporting continuous use in long-life applications such as industrial equipment.

　　The MCRS series will be expanded to include compact 0201-size (0.024inch × 0.012inch) / 0603-size (0.6mm × 0.3mm) products capable of withstanding temperatures up to +155°C. At the same time, the MCRE series will soon offer completely lead-free 01005-size (0.016inch × 0.008inch) / 0402-size (0.4mm × 0.2mm) products. These additions will allow ROHM to respond to the demand for further miniaturization while complying with environmentally-driven voluntary regulations and export restrictions.

　　Going forward, ROHM is focused on developing and manufacturing products that cater to the diverse needs of customers worldwide. In particular, ROHM will continue to expand its lineup of resistors (its founding products) that improve miniaturization and reliability while ensuring long-term stable supply. By consistently delivering new value through technological innovation, ROHM seeks to solidify its market position and drive the evolution of electronic components.

　　Application Examples

        Suitable for a wide range of applications (excluding medical, military, aerospace, and nuclear control equipment)

　　Automotive

　　・Electric vehicles (xEVs): Battery Management Systems (BMS), powertrain control, Advanced Driver Assistance Systems (ADAS)

　　・In-vehicle electronics: Engine Control Units (ECUs), infotainment systems, and more

　　Industrial Equipment

　　・Robotics: Control systems for industrial robots

　　・Factory Automation (FA): Automated product line control systems

　　・Power conversion equipment: Inverters, converters, and more

　　Consumer Devices

　　・Smart devices: Smartphones, tablets, wearables

　　・Home appliances: TVs, refrigerators, washing machines

　　Communication Equipment

　　・Network equipment: Routers, switching hubs, communication equipment for data centers, etc.

　　Online Sales Information

        Sales Launch Date: October 2024

　　The products will be offered at other online distributors as they become available.

　　Products for Sale: MCR01S、MCR03S、MCR10S、MCR18S、MCR25S、MCR50S、MCR100S、MCR10L、MCR18L、MCR25L、MCR50L、MCR100L

　　Additional resistance values will be added as needed.

　　Resistance Value Search Page

        Users can now search by series or resistance value and purchase samples on product pages.

　　https://www.rohm.com/products/resistors

　　Terminology

        Temperature Coefficient of Resistance (TCR)

　　An index of how much the resistance value changes with temperature. The lower the TCR, the less the resistance value fluctuates with temperature changes, resulting in more stable performance.

　　AEC-Q200

　　AEC stands for Automotive Electronics Council, a reliability standard for automotive electronic components established by major automotive manufacturers and US electronic component makers. Compliance with this standard by automotive components ensures reliable performance even under harsh environmental conditions. Q200 is a standard specifically intended for passive components such as resistors, capacitors, and inductors.

　　xEV (Electric Vehicles)

　　A collective term for vehicles primarily powered by electric motors, such as Hybrid Electric Vehicles (HEVs), Plug-in Hybrid Electric Vehicles (PHEVs), and Electric Vehicles (EVs).