MALVERN, Pa. — Vishay Intertechnology has introduced two new IHDM edge-wound, through-hole inductors in the 1107 case for commercial applications with soft saturation current to 422 A. Featuring a powdered iron alloy core technology, the Vishay Custom Magnetics IHDM-1107BBEV-20 and IHDM-1107BBEV-30 provide stable inductance and saturation over a demanding operating temperature range from -55 °C to +180 °C with low power losses and excellent heat dissipation.
The edge-wound coil provides low DCR down to 0.25 mΩ, which minimizes losses and improves rated current performance for increased efficiency. Compared to competing ferrite-based solutions, the IHDM-1107BBEV-20 and IHDM-1107BBEV-30 offer 30 % higher rated current and 30 % higher soft saturation current levels that are stable at continuous operating temperatures to +180 °C. The inductors’ soft saturation provides a predictable inductance decrease with increasing current, independent of temperature.
With an operating voltage up to 350 V, 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 industrial, medical, and military systems. The inductors are available with a selection of two core materials for optimized 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 customize the devices’ performance — including inductance, DCR, rated current, and voltage rating — upon request. Customizable 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, halogen-free, and Vishay Green.
Device Specification Table:
|Inductance (µH)||0.47 to 7.5||0.68 to 12.0|
|DCR typ. (mΩ)||0.25 to 2.17|
|DCR max. (mΩ)||0.30 to 2.60|
|Heat rating current typ. (A)(1)||31 to 128||35 to 125|
|Saturation current typ. (A)||96 to 343(2) / 118 to 422(3)||49 to 202(2)/ 61 to 248(3)|
|SRF typ. (MHz)||29 to 217||21 to 181|
(1) DC current (A) that will can an approximate ΔT of 40 °C
(2) DC current (A) that will cause L0 to drop approximately 20 %
(3) DC current (A) that will cause L0 to drop approximately 30 %
Samples and production quantities of the new inductors are available now, with lead times of 12 weeks.