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“Compared to competing ferrite-based solutions, IHDM-1107BBEV-2A and IHDM-1107BBEV-3A offer 30% higher rated current and 30% higher saturation current levels at +125°C,” according to the company. “The inductors’ soft saturation provides a predictable inductance decrease with increasing current, independent of temperature.”

They come in a 1107 case size (~18 x 27 x 22mm) and loose 20% of inductance at currents between 49 and 343A – the highest current version works up to 422A (see table). Dc resistance can be as low as 220μΩ.

For maximum copper fill, edge-wound rectangular cross-section conductors are used.

The difference between the two series is in the alloy mix used in the core: at similar inductance values -2A types are optimised for best saturation and lowest core loss, while -3A types are optimised for the low dc losses.

• -2A range: 0.47, 1.1, 2, 3, 4.4, 5.6 and 7.5μH
• -3A range: 0.68. 1.5, 2.7, 4.3, 6.2, 8.2 and 12μH

Qualification is to AEC-Q200, and isolation between coil and core is 350V (60s, 5mAmax).

The two connections are chunky: blades 4.25mm long measuring 4mm by between 0.9 and 2.6mm depending on the part. The position of one of the blades also varies from part to part – custom termination options include bare copper, surface-mount and press fit.

The devices are RoHS-compliant, with hot-dipping used for tin plating to reduce the risk of whisker growth.

Use is expected in 48V – 12V bi-directional converters, domain control units and on-board chargers, as well as for filtering switching noise.

Find these automotive inductors on this Vishay web page. Its IHDM-1107BB-x0 parts are similar, without automotive approval

ITG also has a range of edge-wound high-current automotive inductors