Edge-wound inductors reduce power losses, says Vishay Intertechnology

Two IHDM edge-wound, through-hole inductors are available in the 1107 case for commercial applications with soft saturation current to 422A. The Vishay Custom Magnetics IHDM-1107BBEV-20 and IHDM-1107BBEV-30 inductors are based on a powdered iron alloy core technology and provide stable inductance and saturation over a wide temperature range of -55 to +180 degrees C with low power losses and excellent heat dissipation, claimed Vishay. 

The edge-wound coil provides low DCR (DC resistance) down to 0.25 mOhm, which minimises losses and improves rated current performance. Compared to competing ferrite-based devices, the IHDM-1107BBEV-20 and IHDM-1107BBEV-30 offer 30 per cent higher rated current and 30 per cent higher soft saturation current levels that are stable at continuous operating temperatures to +180 degrees C. 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 suitable for DC/DC converters, inverters, differential mode chokes and filters for motor and switching noise suppression in high current, high temperature applications, including industrial, medical, and military systems. The inductors are available with a selection of two core materials to optimise performance depending on the application. 

Standard terminals for the IHDM-1107BBEV-20 and IHDM-1107BBEV-30 are stripped and tinned for through hole mounting. Vishay can customise the devices’ performance — including inductance, DCR, rated current, and voltage rating on request. Customisable mounting options include bare copper, surface-mount, and press fit. To reduce the risk of whisker growth, the inductors feature a hot-dipped tin plating. The devices are RoHS-compliant and halogen-free.

Samples and production quantities are available now, with lead times of 12 weeks. 

Vishay manufactures discrete semiconductors and passive electronic components for designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace and medical markets. 


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