CRF2512 CRF2512 Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts

CRF2512 is a high-performance Metal Foil, Metal Strip Chip Resistor & EB Welded Shunt manufactured by Bourns, a global leader in electronic components. This component falls under the Passive Components category, specifically designed for applications requiring precise resistance and high power handling in a compact surface-mount package. Bourns’ expertise ensures that the CRF2512 delivers exceptional stability and reliability, making it a preferred choice for demanding electronic designs where accuracy is paramount.

Key Specifications

The CRF2512 series offers critical specifications that define its performance and suitability for various applications. The Tolerances available are 1 % and 5 %. This attribute indicates the permissible deviation from the nominal resistance value. A 1% tolerance signifies a high-precision component, crucial for applications like measurement equipment and sensor interfaces where even minor inaccuracies can lead to significant errors. The 5% tolerance offers a more cost-effective option for less critical applications while still maintaining good performance. The Component Type is explicitly defined as Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts. This classification highlights its construction, utilizing advanced metal foil technology to achieve low resistance values and superior temperature stability compared to traditional film resistors. The EB Welded Shunts aspect further emphasizes its capability for current sensing applications, where precise and stable low-ohmic resistance is essential. The Resistance Range for the CRF2512 spans from 0.001 to 0.050 Ω. This extremely low resistance range is characteristic of current sense resistors, designed to introduce minimal voltage drop while accurately measuring current flow. Such low values are critical in power management circuits, battery chargers, and motor control systems. The Power per Resistor specification is segmented: 0.001 to 0.010 Ω resistors can handle 2 W, while 0.011 to 0.050 Ω resistors are rated for 1 W. This indicates the maximum amount of power the resistor can dissipate without damage, a crucial factor for ensuring thermal stability and longevity in high-current applications. The higher power rating for lower resistance values is typical for shunts, allowing them to handle significant current. Finally, the Temperature Coefficient is ±50 ppm (parts per million). This value describes how much the resistance changes with temperature variations. A low temperature coefficient like ±50 ppm signifies excellent stability across a wide operating temperature range, which is vital for maintaining accuracy in environments with fluctuating temperatures, such as automotive electronics or industrial control systems.

Features and Benefits

• High Precision and Stability: With tolerances down to 1% and a low temperature coefficient of ±50 ppm, the CRF2512 ensures highly accurate and stable resistance values, critical for precision measurement and control systems.
• Robust Power Handling: Capable of dissipating up to 2 W, these resistors are designed for high-current applications, providing reliable performance without compromising component integrity.
• Ultra-Low Resistance Range: The 0.001 to 0.050 Ω range makes them ideal for current sensing in power management circuits, minimizing power loss and enhancing efficiency.
• Advanced Metal Foil Technology: The metal foil and EB welded shunt construction offer superior long-term stability and reliability compared to other resistor technologies, even under harsh operating conditions.
• Compact Surface-Mount Design: The chip resistor form factor allows for efficient space utilization on PCBs, facilitating miniaturization in modern electronic devices.

Typical Applications

The Bourns CRF2512 series is highly versatile and finds application in numerous demanding electronic systems:

• Current Sensing in Power Supplies: In DC-DC converters, battery chargers, and power management units, the CRF2512 is used to accurately monitor current flow, enabling precise regulation, overcurrent protection, and power efficiency optimization. Its low resistance minimizes voltage drop, preserving power.
• Motor Control Systems: For industrial and automotive motor control, these resistors provide feedback for current loops, allowing for precise speed and torque control. The high power rating and low TCR ensure stable operation even with fluctuating motor loads.
• Automotive Electronics: Given its robust construction and stable performance across temperature variations, the CRF2512 is suitable for various automotive applications, including engine control units (ECUs), infotainment systems, and electric vehicle battery management systems (BMS).
• Industrial Automation: In programmable logic controllers (PLCs), sensor interfaces, and process control equipment, the precision and stability of these resistors are crucial for reliable data acquisition and control, ensuring operational accuracy and safety.
• Test and Measurement Equipment: High-precision multimeters, oscilloscopes, and calibration equipment rely on components like the CRF2512 for accurate current measurement and voltage division, where even small errors can compromise measurement integrity.

In summary, the CRF2512 from Bourns represents a state-of-the-art solution for applications requiring precise, stable, and high-power current sensing. Its advanced design and robust specifications make it an indispensable component for engineers designing next-generation electronic systems. This component is readily stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your projects.

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