IN Brief:
- Vishay has added four radial through-hole inductors to its IHXL series.
- The devices offer rated current up to 209A, operation to +155°C, and 20% improved core losses.
- High-current magnetics remain central to converter efficiency, EMC, ripple control, and thermal performance.
Vishay has expanded its IHXL series of radial through-hole inductors with four automotive-grade and commercial devices for high-current filtering and power conversion.
The new Vishay Dale devices comprise the automotive-grade IHXL1500VZ-3A and IHXL-2000VZ-3A, alongside the commercial IHXL1500VZ-31 and IHXL-2000VZ-31. They are designed for high-current input filters, DC/DC converters, DC-link filters in battery charging systems, brushless DC motors, differential-mode chokes, and boost PFC stages.
Target applications include automotive, industrial, solar, and wind power systems. The devices use a new iron alloy core material that improves core losses by 20% compared with previous-generation IHXL devices, while reducing temperature rise.
The inductors support high-temperature operation to +155°C and are designed for filtering applications up to 209A. Inductance values extend up to 10µH, with thick internal copper conductors supporting load ranges from 55A to 209A across the 1500 and 2000 case sizes.
The 1500 package measures 38.1mm x 38.1mm x 21.89mm, while the 2000 package measures 50.8mm x 50.8mm x 21.7mm. Magnetically shielded construction with a pressed powdered iron body contains stray flux and reduces coupling to surrounding components, supporting EMC performance in dense layouts.
Low internal thermal resistance helps reduce hot spots, and the flat top surface allows external heatsinks or active cooling cold plates to be fitted. The soft saturation core material is intended to maintain stable inductance across changing load conditions, including high transient current spikes.
High-current magnetics remain one of the practical limiting factors in power-stage design, even as semiconductor developments move quickly. Navitas’ 800V power demonstrations for AI data-centre and grid applications underline how higher-voltage systems and wide-bandgap devices are increasing the pressure on surrounding passive components.
Inductors sit directly in the path of ripple current, transient response, conducted noise, heat generation, and board-level packaging constraints. Faster switching devices can reduce passive size in some circuits, but only where magnetic components maintain acceptable losses, saturation behaviour, and thermal performance under the final operating profile.
That balance is becoming harder in industrial and automotive systems. Battery charging, motor drives, renewable-energy conversion, and high-current DC/DC stages are moving into smaller, hotter, and more electrically noisy environments. The inductor has to manage current without excessive core loss, avoid hard saturation during load steps, limit stray flux, and survive long service lives under thermal and mechanical stress.
Automotive qualification also supports reuse in adjacent harsh-environment applications. Engineers working across mobility, industrial energy, and renewable power often need components with thermal shock, moisture, vibration, mechanical shock, and long operating lifetime performance even outside passenger vehicles.
The new IHXL devices are available now with 14-week lead times. Their value will be determined by how the improved core material, shielding, saturation behaviour, and heat handling perform inside real converter and filter layouts, where magnetics remain one of the least visible but most decisive parts of the power stage.
