Low Cost Integrated E-Shield Inductors For Reducing EMI By Vishay

  • Offers high resistance to thermal and mechanical shock and handles high transient current
  • Also saves board space

Vishay Intertechnology has expanded its IHLE® series of low-profile, high-current inductors, which feature integrated e-shields for the reduction of electromagnetic interference (EMI) with new commercial and automotive-grade devices. The Vishay Dale IHLE-5050FH-51 and IHLE-5050FH-5A bring down costs and save board space by eliminating the need for separate board-level Faraday shielding.

The devices contain the electric and magnetic field protection associated with EMI in a tin-plated copper integrated shield. A provision of up to -20 dB of electric field reduction at 1 cm (above the centre of the inductor) has been made when the shield is connected to ground. 

Optimised for DC-DC converters

Operating temperature of up to 155 degrees Celsius and coplanarity of four terminals within ≤ 100 µm have optimised the inductors for energy storage in DC-DC converters of up to 2 MHz and provide excellent noise attenuation in high current filtering applications (up to the self-resonance frequency (SRF)) of the inductor.

Other features

  • Inductance @ 100 kHz (μH): 0.33 to 100
  • DCR typ. @ 25 °C (mΩ): 0.83 to 175
  • DCR max. @ 25 °C (mΩ): 0.92 to 205

IHLE-5050FH-51 applications include desktop PCs and servers, high current POL converters, low-profile, high-current power supplies and battery-powered devices. The IHLE-5050FH-5A can be used in automotive engine and transmission control units, diesel injection drivers, noise suppression for motors, windshield wipers, power mirrors and seats, entertainment/navigation systems, heating and ventilation blowers, and LED and HID lighting.

Packaged in a 100 per cent lead (Pb)-free shield, the composite 5050 case size reduces buzz to ultra-low levels. The inductors offer high resistance to thermal shock, moisture and mechanical shock, and handle high transient current spikes without saturation. 

The IHLE-5050FH-51 and IHLE-5050FH-5A are RoHS-compliant and halogen-free.

Samples and production quantities of the new IHLE® devices are available now.

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