Vishay IHDV Inductors Launched: Revolutionizing High-Voltage Automotive Power Systems

Vishay IHDV Inductors are officially entering the power electronics market, setting a new benchmark for high-voltage efficiency and rugged reliability. Vishay Intertechnology has introduced the first four cutting-edge devices in its new IHDV line of high-voltage power inductors. These components are tailor-made for next-generation automotive, energy, and industrial infrastructure systems.

As power architectures transition to higher voltages to satisfy demanding efficiency requirements, component reliability becomes paramount. Available now on aarokatech.com, this new release directly answers the call for compact, high-temperature, and exceptionally isolated magnetic components. Engineered specifically for designs requiring rigorous 1.5 kV isolation voltages, these devices are available in space-saving 0808 and robust 1008 case sizes.

Breaking the 350 V Barrier with 1.5 kV Isolation

Traditional high-power inductors often hit a performance ceiling, typically maxing out at a 350 V isolation rating. To extend the voltage capability far beyond these industry norms, the design engineers at Vishay Dale incorporated an innovative polyethyleneterphthalate (PET) plastic coilform insulator.

This advanced material upgrade allows the devices to comfortably support a 1.5 kV isolation voltage. For automotive sub-systems like on-board chargers (OBC) and high-voltage DC battery filtering, this increased isolation provides an indispensable safety margin and prevents catastrophic dielectric breakdowns under extreme operating conditions.

Advanced Powdered Iron Core and Soft Saturation

One of the standout features of the new series is its integration of a custom powdered iron alloy core. This engineering choice enables exceptional soft saturation behavior, ensuring that the inductance remains highly stable under heavy loads. Stable inductance is vital for effective ripple current regulation in modern power topologies.

Furthermore, these power inductors are built to handle hostile electrical environments. They can withstand transient in-rush currents up to five times their standard heat rating current without experiencing hard saturation. This means your power circuits stay protected during sudden load steps or startup surges.

Additionally, the entire lineup supports continuous high-temperature operation reaching up to 180 °C. This makes them perfectly suited for under-the-hood automotive environments and tightly packed industrial enclosures where thermal management is a constant challenge.

High-Frequency Filtering Capabilities

For engineers designing high-frequency filtering networks, the devices deliver significantly higher impedance than similarly sized iron composite inductors on the market:

• The 0808 Models: Provide a solid impedance of 1 kΩ at a peak frequency of 80 MHz.
• The 1008 Models: Deliver a massive 2.8 kΩ of impedance at 25 MHz.

This performance represents three times the impedance of competing legacy inductors at four times the operational frequency, allowing for much cleaner power rails and reduced electromagnetic interference (EMI).

Understanding the Footprints: 0808 vs. 1008 Case Sizes

The product line is divided into two distinct mechanical configurations to suit different assembly and environmental demands:

Compact Surface-Mount: IHDV-0808AC

The Automotive Grade IHDV-0808AC-3A and commercial-grade IHDV-0808AC-30 feature a compact 20 mm x 14 mm x 14 mm surface-mount footprint. This layout minimizes board space, occupying roughly one-third the total volume of the larger 1008 models. It is an ideal fit for high-density layouts where real estate is at a premium.

Rugged Through-Hole: IHDV-1008BB

Conversely, the larger IHDV-1008BB-3A and IHDV-1008BB-30 configurations measure 25 mm x 20 mm x 23 mm. They leverage through-hole terminations that deliver maximum mechanical strength. To combat severe mechanical stress, all four variants integrate additional support pins to significantly increase their resistance to extreme shock and vibration.

Technical Specifications Comparison

To help you choose the right component for your next power design, here is a comprehensive breakdown of the core specifications for all four newly released models:

(1) DC current (A) that will cause an approximate $\Delta T$ of 40 °C (2) DC current (A) that will cause $L_0$ to drop approximately 30%

Target Applications for Next-Gen Systems

Because of their high isolation voltages and extreme thermal ceilings, these inductors excel in critical energy conversion and filtering stages, including:

• On-Board Chargers (OBC): Managing high-voltage AC-to-DC conversion in electric vehicles.
• Battery-Charging Circuits: Ensuring stable current delivery in EV fast-charging systems.
• Power Factor Correction (PFC): Boosting efficiency and mitigating harmonic distortions in industrial power supplies.
• High Voltage DC Battery Filtering: Smoothing out ripples in heavy-duty battery management networks.

Compliance and Availability

Vishay remains committed to environmental sustainability. All four components are fully RoHS-compliant, halogen-free, and adhere strictly to the “Vishay Green” environmental standards. Additionally, the automotive-focused models (IHDV-0808AC-3A and IHDV-1008BB-3A) are fully AEC-Q200 qualified, guaranteeing rigorous qualification testing for demanding automotive operations.

Samples and full production quantities of these high-voltage power inductors are available immediately through authorized distribution channels. Standard production lead times are currently sitting at 12 weeks. Stay tuned to aarokatech.com for more technical updates, teardowns, and deep dives into the latest passive electronic components shaping our electrified future.