The WSF4527100R0JKTAB is a power metal strip resistor from Vishay, designed for current sensing in high-power applications. It features a four-terminal connection for enhanced accuracy in current measurement. Its low resistance value and high power capability make it ideal for applications requiring precise and reliable current sensing.

Applications

• Power Supplies: Used for current sensing in power supplies, providing feedback for regulation and protection.
• Motor Control: Provides accurate current feedback for motor speed and torque control.
• Automotive Electronics: Employed in battery management systems, electronic power steering, and other automotive applications.
• Inverters: Current sensing in inverter circuits for solar, wind, and other renewable energy systems.
• Welding Equipment: Provides current regulation in welding power supplies.

Features

• Four-Terminal Connection: Kelvin connection minimizes the effect of lead resistance on measurement accuracy.
• High Power Rating: Capable of handling significant power dissipation.
• Low Resistance Value: Designed for high-current sensing applications.
• Low Temperature Coefficient of Resistance (TCR): Ensures stable resistance values over a wide temperature range.
• Metal Strip Construction: Provides excellent pulse handling capability.

Benefits

• Accurate Current Sensing: Four-terminal connection enables precise monitoring and control of current flow.
• Reliable Performance: Maintains stable resistance values under varying load and temperature conditions.
• Robust Design: Withstands harsh environments and demanding operating conditions.
• Easy Integration: Compact size and convenient mounting options facilitate easy integration into existing circuits.
• Improved Efficiency: Accurate current sensing allows for optimized system performance and efficiency.

Additional Details

The WSF4527 series resistors are available in various resistance values and tolerances to meet specific application requirements. The four-terminal connection allows for precise measurement of the voltage drop across the resistor, eliminating the error caused by the lead resistance. The resistor is constructed using a metal strip element that is welded to copper terminals. This construction provides excellent electrical and thermal conductivity.

Specific to WSF4527100R0JKTAB: This specific part number indicates a resistance value of 0.1 Ohms (100 milliohms), a tolerance of ±5%, and a temperature coefficient of J. The “TAB” likely denotes specific packaging or terminal details. For detailed specifications, refer to the official Vishay datasheet.

Technical Specifications (General WSF4527 Series):

• Power Rating: Up to 5 Watts (depending on the specific part number and mounting conditions)
• Resistance Range: Typically from milliohms to ohms
• Tolerance: Available in various tolerances, such as ±1%, ±5%
• TCR: Typically ±50 ppm/°C or better
• Operating Temperature Range: -65°C to +170°C