CSM2F-6918-0 CSM2F-6918-0 High Power Shunts

CSM2F-6918-0

Overview

CSM2F-6918-0 is a high-power shunt resistor manufactured by Bourns, a globally recognized leader in electronic components. This specific component belongs to the category of passive components, specifically resistors, and is designed for applications requiring precise current measurement in high-power circuits. Shunt resistors, also known as current sense resistors, are critical for monitoring current flow without significantly impacting the circuit’s operation, by providing a very low resistance path in parallel with the main current path. The voltage drop across the shunt is then measured to infer the current. Bourns’ expertise ensures that the CSM2F-6918-0 delivers robust performance and accuracy in demanding environments.

Key Specifications

The Series for this component is CSM2F-6918. This series designation helps in identifying the specific product family and its general characteristics, ensuring compatibility and consistency within Bourns’ product lines. Understanding the series is crucial for designers looking to integrate components with known performance profiles.

The Tolerances are specified at 5 %. This value indicates the permissible deviation of the actual resistance from its nominal value. A 5% tolerance is standard for many power applications, balancing cost-effectiveness with sufficient accuracy for current sensing in high-power systems. For critical measurement applications, understanding this tolerance is vital for system calibration and overall accuracy.

As a Component Type, this is explicitly a High Power Shunt. This classification highlights its primary function and capability: to handle significant power dissipation while accurately sensing current. High power shunts are engineered with specific materials and construction to manage thermal stress and maintain stability under heavy loads, distinguishing them from standard resistors.

The Resistance Range for the CSM2F-6918-0 is between 50 to 200 µΩ (micro-ohms). This extremely low resistance is characteristic of shunt resistors, designed to introduce minimal voltage drop and power loss into the main circuit path while still providing a measurable voltage signal proportional to the current. The specific value within this range would be chosen based on the maximum current to be measured and the desired output voltage signal.

The Power per Resistor is rated at 36 W. This is a critical specification indicating the maximum power that the shunt resistor can safely dissipate without damage or significant deviation in its electrical characteristics. For high-power applications, selecting a shunt with an adequate power rating is essential for reliability and longevity, preventing thermal runaway and ensuring stable operation.

The Temperature Coefficient is ±50 ppm (parts per million). This value describes how much the resistance of the shunt changes with variations in temperature. A low temperature coefficient like ±50 ppm is highly desirable for current sensing applications, as it ensures that the resistance remains stable across a range of operating temperatures, leading to more accurate current measurements regardless of environmental conditions. This stability is paramount for precise control and monitoring in industrial and automotive systems.

Features and Benefits

• Robust High Power Handling: With a 36W power rating, the CSM2F-6918-0 is engineered to withstand significant power dissipation, making it ideal for demanding high-current applications without compromising performance or reliability.
• Exceptional Current Sensing Accuracy: The ultra-low resistance range (50 to 200 µΩ) combined with a tight 5% tolerance ensures precise current measurement, crucial for accurate system monitoring and control in power electronics.
• Stable Performance Across Temperatures: A low temperature coefficient of ±50 ppm guarantees consistent resistance values over varying operating temperatures, enhancing measurement accuracy and system stability in diverse environments.
• Compact and Efficient Design: Bourns’ advanced manufacturing processes result in a high-power shunt that offers excellent performance in a relatively compact footprint, facilitating integration into space-constrained designs.
• Reliable Bourns Quality: As a product from Bourns, a trusted name in electronic components, users can expect superior quality, durability, and long-term reliability, backed by extensive industry experience and rigorous testing.

Typical Applications

• Automotive Electronics: High power shunts like the CSM2F-6918-0 are extensively used in electric vehicles (EVs) and hybrid electric vehicles (HEVs) for battery management systems (BMS), motor control, and power steering systems, where accurate current monitoring is vital for efficiency, safety, and performance.
• Industrial Power Supplies: In industrial settings, these shunts are critical for current sensing in high-current power supplies, uninterruptible power supplies (UPS), and battery chargers, enabling precise regulation, overload protection, and efficient power delivery to sensitive equipment.
• Renewable Energy Systems: Solar inverters, wind turbine control systems, and energy storage solutions rely on high power shunts to monitor current flow from renewable sources and into battery banks, optimizing energy harvesting and distribution.
• Motor Control Systems: For industrial motors, robotics, and automation equipment, the CSM2F-6918-0 provides accurate feedback for current control loops, allowing for precise speed and torque management, improving efficiency, and protecting against overcurrent conditions.
• Welding Equipment: High-current welding machines utilize shunts for precise current regulation, ensuring consistent weld quality and preventing damage to the equipment. The ability to handle 36W makes this component suitable for such demanding applications.

Summary

The CSM2F-6918-0 from Bourns is a high-performance, reliable high-power shunt resistor designed for accurate current sensing in demanding applications. Its robust specifications, including a 36W power rating and low temperature coefficient, make it an ideal choice for automotive, industrial, and renewable energy systems. This essential component is stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your critical projects.

Browse more High Power Shunts at Cirkit Electro Components.

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