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High-rel metal alloy resistors are AEC-Q200 qualified

High-rel metal alloy resistors are AEC-Q200 qualified

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By Christoph Hammerschmidt



Aimed at designers of power supplies and motor drives in the industrial, automotive and medical industries, the LRMAP5930 high power shunt resistors are ideal in the specific areas of regulating current flow, detecting stalled motors and particularly, measuring power consumption.  The growth of electrical drives and actuators in industrial and automotive applications has witnessed a parallel growth in the need to monitor and minimize energy usage. The LRMAP5930 is AEC-Q200 qualified for the automotive market while other applications include power supplies, battery monitoring and process control.

LRMAP5930 resistance values range from 200μΩ to 2mΩ and the resistors feature a high surge energy capability of up to 33J.  Robust, they are formed from a continuous band of E‑beam welded precision resistive strip, and various alloys are used based on the resistance value.  The metal element shunt parts withstand all normal industrial solvents suitable for cleaning printed circuits and for ease of identification are marked ‘5930’; alloy type, ohmic value and tolerance.

The surface mount shunt resistors’ low thermal impedance minimizes the temperature rise and enhances the reliability of the assembly, while their high surge tolerance gives reliable product performance under inrush and momentary short circuit conditions.  Their good long term stability of value, low TCR (temperature coefficient of resistance) and low thermal EMF collectively mean that only a small part of the designer’s error budget is consumed, enabling more design freedom elsewhere in the circuit.

 

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