Wirewound resistors operate in harsh environments

Bourns Inc. launches its series of Riedon precision wirewound resistors. These passive devices meet application requirements for high accuracy and long-term stability. They offer a wide resistance range of up to 6 megohms (MΩ) with ultra-low resistance tolerances (as low as ±0.005 percent).

This rugged, high-precision resistor series is offered in multiple axial, radial, and square package sizes and in a variety of lead configurations for greater design flexibility. They feature non-inductive multi-Pi cores, protective encapsulation technology, and a low standard temperature coefficient of ±2 ppm/°C.

These features help minimize inductance and noise while maintaining stability and efficiency even under high heat and harsh electrical conditions, Bourns said.

The series is 100 percent acceptance tested and RoHS-compliant. Applications include measurement equipment, bridge circuits, load cells and strain gauges, imaging systems, current sensing equipment, and high-frequency circuit designs.

The Riedon wirewound resistors are available now. Custom solutions are also available to meet specific customer requirements.

Last year, Bourns expanded its Riedon power resistor family with the launch of 11 product series, including wirewound resistors and current-sense resistors. They feature high power ratings, low temperature coefficients (TCRs), a wide resistance range, and an extended temperature range.

These resistors are available in numerous packaging options, including wirewound through-hole and surface mount; surface-mount metal film; and bare/coated metal element resistors. They target a variety of applications, including battery energy storage systems, industrial power supplies, motor drives, smart meters, telecom 5G remote radio and baseband units, and current sensing.

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