CRK0815 CRK0815 Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts

CRK0815

Overview

CRK0815 is a high-performance Metal Foil, Metal Strip Chip Resistor & EB Welded Shunt manufactured by Bourns, a global leader in electronic components. This component is designed for precision current sensing and voltage division in a wide array of electronic circuits. As a specialized type of resistor, it utilizes advanced metal foil or metal strip technology to achieve very low resistance values and excellent stability, making it ideal for applications where accurate current measurement and power handling are critical. Its robust construction ensures reliable operation even in demanding environments, providing designers with a dependable solution for their power management and sensing needs.

Key Specifications

Tolerances: 1 % / 5 %

The CRK0815 offers two tolerance options: 1% and 5%. Tolerance indicates the permissible deviation of the actual resistance value from its nominal value. A 1% tolerance signifies a very high level of precision, meaning the resistance will be within ±1% of the specified value. This is crucial for applications requiring accurate current sensing or precise voltage division, where even small deviations can impact circuit performance. The 5% tolerance option provides a more cost-effective solution for less critical applications where a wider range of deviation is acceptable, balancing performance with economic considerations.

Component Type: Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts

This component falls under the category of Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts. This classification highlights its advanced construction, which leverages metal foil or strip elements to achieve extremely low resistance values and superior temperature stability compared to traditional film or wirewound resistors. The ‘EB Welded Shunts’ aspect indicates that the resistive element is electron-beam welded, a manufacturing process that ensures robust, low-resistance connections and enhances the component’s overall reliability and power handling capabilities. This technology is particularly beneficial for high-current applications where power dissipation and long-term stability are paramount.

Resistance Range: 0.004; 0.005; 0.01 Ω

The CRK0815 is available in very low resistance values: 0.004 ohms, 0.005 ohms, and 0.01 ohms. These extremely low resistance values are characteristic of current sense resistors or shunts. In current sensing applications, a low resistance value minimizes power loss (I²R) across the resistor while still generating a measurable voltage drop (V=IR) proportional to the current flowing through it. This allows for efficient and accurate monitoring of current without significantly impacting the circuit’s power budget or introducing excessive heat. The specific values cater to different current ranges and sensitivity requirements in various power management circuits.

Power per Resistor: 1 W

The power rating of 1 Watt (W) indicates the maximum amount of power the CRK0815 resistor can safely dissipate continuously without damage or significant deviation in its electrical characteristics. This is a critical specification for current sense resistors, as they are often placed in series with high-current paths. A 1W rating signifies that the component is capable of handling moderate to high currents, making it suitable for a wide range of power supply, motor control, and battery management applications where power dissipation needs to be carefully managed to ensure long-term reliability and prevent thermal issues within the electronic system.

Temperature Coefficient: ±50 ppm

The temperature coefficient of ±50 ppm (parts per million) indicates how much the resistance value changes with temperature variations. A low temperature coefficient like ±50 ppm/°C signifies excellent stability; for every degree Celsius change in temperature, the resistance will change by only 50 parts per million of its nominal value. This is a crucial attribute for precision applications, as it ensures that the current sensing or voltage division remains accurate across varying operating temperatures, preventing measurement errors and maintaining consistent circuit performance in environments where temperature fluctuations are common.

Features and Benefits

• High Precision Current Sensing: The low resistance values (0.004, 0.005, 0.01 Ω) combined with tight tolerances (1%, 5%) enable highly accurate current measurement, crucial for efficient power management and control systems.
• Excellent Temperature Stability: A low temperature coefficient of ±50 ppm ensures consistent performance across a wide operating temperature range, minimizing measurement drift and enhancing reliability in dynamic thermal environments.
• Robust Power Handling: With a 1W power rating, this component can safely dissipate significant power, making it suitable for high-current applications without compromising its integrity or performance.
• Advanced Construction: Utilizing metal foil/strip technology and EB welded shunts, the CRK0815 offers superior long-term stability, low thermal EMF, and enhanced durability compared to conventional resistor types.
• Compact Chip Design: As a chip resistor, it offers a small footprint, facilitating integration into densely packed PCBs and miniaturized electronic devices, optimizing board space.

Typical Applications

• Power Supply Units (PSUs): Used for current sensing in DC-DC converters, AC-DC power supplies, and voltage regulators to monitor output current, implement overcurrent protection, and improve regulation accuracy.
• Battery Management Systems (BMS): Essential for monitoring charge and discharge currents in battery packs for electric vehicles, portable electronics, and energy storage systems, ensuring safe operation and accurate state-of-charge estimation.
• Motor Control: Employed in motor drive circuits for precise current feedback, enabling accurate torque control, speed regulation, and protection against overcurrent conditions in industrial automation and robotics.
• Industrial Automation: Integrated into programmable logic controllers (PLCs), sensor interfaces, and control modules for current measurement in various industrial processes, contributing to system reliability and diagnostic capabilities.
• Test and Measurement Equipment: Utilized in multimeters, oscilloscopes, and power analyzers as precision shunts for accurate current measurement, ensuring the reliability and calibration of testing instruments.

The CRK0815 from Bourns is a reliable and high-performance solution for demanding current sensing applications. This component is stocked and shipped across India by Cirkit Electro Components, Mumbai.

Browse more Metal Foil, Metal Strip Chip Resistors & EB Welded Shunts at Cirkit Electro Components.

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