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Vishay Releases New Generation of Automotive EMI Shielded Inductor

5.6.2024
Reading Time: 3 mins read
A A

Vishay Intertechnology releases second-generation automotive grade IHLE® inductor with integrated EMI shield in 4040 case size.

Vishay Intertechnology, Inc. (NYSE: VSH) expanded its IHLE® series of low profile, high current power inductors featuring integrated E-field shields with a new second-generation Automotive Grade device in the 10 mm by 10 mm 4040 case size.

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Offering an improved shield design over previous-generation solutions, and polarity marked for more consistent EMI performance, the Vishay Dale IHLE-4040DDEW-5A lowers costs and saves board space by potentially eliminating the need for separate board-level Faraday shielding.

Compared to traditional composite inductors, the device released today contains the electric and magnetic fields associated with EMI in a tin-plated copper integrated shield. When the shield is connected to ground, the IHLE-4040DDEW-5A 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.

The IHLE-4040DDEW-5A 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.

Packaged in a 100 % lead (Pb)-free, magnetically shielded, iron alloy encapsulant, the IHLE-4040DDEW-5A offers high resistance to thermal shock, moisture, and mechanical shock from the additional mounting support provided by its two shield terminals. The inductor is RoHS-compliant, halogen-free, and Vishay Green.

Samples and production quantities of the IHLE-4040DDEW-5A are available now, with lead times of 16 weeks.

 Low EndHigh End
Inductance @ 100 kHz (μH)0.4768
DCR typ. @ 25 °C (mΩ)1.55240
DCR max. @ 25 °C (mΩ)1.66252
Heat rating current typ. (A)(1)322.6
Saturation current typ. (A)(2)283.5
Saturation current typ. (A)(3)40.14.9
SRF typ. (MHz)32.03.5
Case size40404040
Part numberIHLE4040DDEWR47M5AIHLE4040DDEW680M5A
Device Specification
  • (¹) DC current (A) that will cause 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 %

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Source: Vishay

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