BI Technologies Debuts HM55 Series Inductors

BI Technologies (Fullerton, CA), a subsidiary of TT electronics plc (Patterson, NJ), debuted its new HM55 Series of self-shielding inductors to replace the traditional iron-powdered toroidal design.

The new Toroid Terminator™ HM55 Series inductors are designed to offer the same, or better, heat dissipation and improved shielding properties as traditional toroids, in a smaller package and with lower power losses.

Typical applications for the Toroid Terminator inductors are motherboards for laptop and desktop computers; multiple-phase, synchronous step-down, voltage regulators; and other general-purpose uses. The shielded-core shape allows the device to be packaged in tubes and automatically inserted on boards, offering additional cost savings. The core material is rated at 200 °C with no thermal aging, compared to toroidal designs which are normally rated for a maximum of 125 °C. The HM55 Series inductors handle dc current up to 40 A, and a high energy storage of 10:1 in volume.

Operating at temperatures ranging from –40 °C to +155 °C, the Toroid Terminators are available in three standard package sizes with custom configurations available. Footprints for the inductors range from 0.2952 in to 0.5322 in. Typical pricing for the HM55 Series ranges from $0.32 to $0.59 in quantities of 100,000, depending on size, with lead times from stock to 10 weeks.