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Aerospace

High-Current Inductors Integrate E-Shield

28 November 2016

IHLE series inductors. Source: Vishay IHLE series inductors. Source: Vishay Vishay Intertechnology, Inc. has expanded its IHLE series of low-profile, high-current inductors featuring integrated e-shields for reduction of EMI with Automotive Grade devices in the 2525, 3232 and 4040 case sizes. The Vishay Dale IHLE-2525CD-5A, IHLE-3232DD-5A, and IHLE-4040DD-5A lower costs and save board space by eliminating the need for separate board-level Faraday shielding. The devices contain the electric field associated with EMI in a tin-plated copper integrated shield, providing up to -20 dB of electric field reduction at 1 cm when the integrated shield is connected to ground.

Featuring high temperature operation to +155 °C and coplanarity of their four terminals within ≤100 µm, the AEC-Q200-qualified inductors released today are optimized for energy storage in DC/DC converters and high-current filtering for automotive engine and transmission control units, diesel injection drivers, noise suppression for motors, windshield wipers, power mirrors and seats, entertainment / navigation systems, and HID lighting. In addition, the devices’ 4-terminal connection (two ground connection points for the shield) provides high-vibration performance for on-engine and chassis-mounted electronic circuits.

Built on Vishay Dale IHLP® technology, the IHLE-2525CD-5A, IHLE-3232DD-5A, and IHLE-4040DD-5A feature high efficiency with typical DCR from 1.55 mΩ to 167 mΩ and a wide range of inductance values from 0.22 µH to 47 µH. The devices provide rated currents to 36 A and handle high transient current spikes without saturation.

Packaged in an RoHS-compliant, 100 % lead-free shielded construction, the inductors offer high resistance to thermal shock, moisture and mechanical shock.

Sample and production quantities of the IHLE devices are available now, with lead times of 10 to 12 weeks for large orders.



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