IHDM edge-wound inductors deliver stable inductance and saturation

Vishay Intertechnology, Inc has released two new IHDM edge-wound, through-hole inductors in the 1107 case for commercial applications with soft saturation current to 422 A. Providing a powdered iron alloy core technology, the Vishay Custom Magnetics IHDM-1107BBEV-20 and IHDM-1107BBEV-30 offer stable inductance and saturation over a demanding operating temperature range from -55C to +180C with low power losses and superior heat dissipation.

The edge-wound coil provides low DCR down to 0.25mOhm, which minimises losses and enhances rated current performance for improved efficiency. Compared to competing ferrite-based solutions, the devices provide 30% higher rated current and 30% higher soft saturation current levels that are stable at continuous operating temperatures to +180C. The inductors' soft saturation provides a predictable inductance decrease with increasing current, independent of temperature.

With an operating voltage up to 350V, the devices are ideal for DC-DC converters, inverters, differential mode chokes, and filters for motor and switching noise suppression in high current, high-temperature applications, including medical, industrial, and defence systems. The inductors are offered with a selection of two core materials for optimised performance depending on the required application.

Standard terminals for the devices are stripped and tinned for through-hole mounting. The company can customise the devices' performance – including inductance, DCR, rated current, and voltage rating – upon request. Customisable mounting options comprise bare copper, surface-mount, and press fit. The inductors provide a hot-dipped tin plating to lower the risk of whisker growth. The devices are RoHS-compliant, halogen-free, and Vishay Green.