Automotive Grade IHLE High Current Inductor with Integrated E-Field Shield for Additional EMI Control

6 June 2024 - 0 Comments

Vishay Intertechnology, Inc. has expanded its IHLE series of low profile, high current inductors featuring integrated E-field shields with a new second-generation Automotive Grade device in the 10 mm by 10 mm 4040 case size. Offering an improved shield design, and polarity marked for more consistent EMI performance, the new IHLE-4040DDEW-5A inductor lowers costs and saves board space by potentially eliminating the need for separate board-level Faraday shielding. This new power inductor is optimized for energy storage in switch mode power supplies and provides excellent noise attenuation when used as a DC power line choke. AEC-Q200 qualified, the device is designed for filtering and DC/DC conversion in entertainment/navigation systems; LED drivers; and noise suppression for motors, automotive domain control units (DCU), and other noise-sensitive applications.

Compared to traditional composite inductors, this device contains the electric and magnetic fields associated with EMI in a tin-plated copper integrated shield. When the shield is connected to ground, this inductor provides up to 20 dB reduction in radiated noise interference, and a further 6 dB reduction in magnetic flux leakage to minimize crosstalk to nearby board components. The inductor features continuous high temperature operation to +155 °C and improved operating and isolation voltage ratings of 75 V and 100 V, respectively. Packaged in a 100 % lead (Pb)-free, magnetically shielded, iron alloy encapsulant, it offers high resistance to thermal shock, moisture, and mechanical shock from the additional mounting support provided by its two shield terminals.

Features

High temperature up to 155 °C
Improved shield design over standard IHLE
Higher operating voltage (75 V) and isolation voltage (100 V) ratings than previous generation