New IHSR Series Inductors Offer a Frequency Range of Up to 5 MHz

Press Release Summary:

Vishay’s Dale IHSR-4040DZ-51 Series Inductors feature a DCR of 0.520 mΩ and inductance of 0.130 µH and are suitable for applications notebooks, desktop PCs, and servers. They are offered in lead-free shielded 10 x 10 mm 4040 case. The units provide an operating temperature up to +155°C and current up to 92 A and are resistant to thermal shock, moisture, and mechanical shock.

Original Press Release:

Vishay Intertechnology High Temperature IHSR Inductor Offers Higher Current Density for Multi-Phase Power Supplies

For Commercial Applications, Device Features Low DCR in 4040 Case With Slim 4 mm Profile

MALVERN, Pa. — Aug. 13, 2018 — Vishay Intertechnology, Inc. (NYSE: VSH) today introduced the first device in its new IHSR series of high temperature commercial inductors. Designed for multi-phase, high current power supplies and filters in computer, industrial, and telecom applications, the Vishay Dale IHSR-4040DZ-51 offers a 50 % reduction in DCR over typical power inductors and a 20 % or greater profile reduction over similar ferrite products. In addition, the inductor boasts an unprecedented standard DCR tolerance of 5 %, with 3 % available for more accurate current sensing.

With a frequency range up to 5 MHz, the device released today is optimized for energy storage in DC/DC converters and high current filtering up to the self-resonant frequency (SRF) of the inductor (see table below). Applications include notebooks, desktop PCs, and servers; low profile, high current power supplies and filters; and DC/DC converters for distributed power systems.

The IHSR-4040DZ-51's low typical DCR of 0.520 mΩ and inductance of 0.130 µH allow for higher current density than competing technologies, while its 4 mm profile enables slimmer end products. The inductor offers high temperature operation to +155 °C, rated current to 92 A, and handles high transient current spikes without saturation. The device is available in the 10 mm by 10 mm 4040 case size; additional case sizes will be offered in the future.

Packaged in a 100 % lead (Pb)-free shielded, composite construction that reduces buzz noise to ultra low levels, the inductor offers high resistance to thermal shock, moisture, and mechanical shock. The IHSR-4040DZ-51 is RoHS-compliant, halogen-free, and Vishay Green.

Device Specification Table:

Case size                            4040

Profile (mm)                         4.0

Inductance (µH)                0.130

DCR typ. (mΩ)                   0.520

DCR max. (mΩ)                 0.546

Heat rating current (A)       72

Saturation current (A)       63(1) / 92(2)

SRF typ. (MHz)                   151

(1) DC current (A) that will cause L0 to drop approximately 20 % 
(2) DC current (A) that will cause L0 to drop approximately 30 %

Samples and production quantities of the new inductor are available now, with lead times of 12 weeks for large orders. Pricing for U.S. delivery only is $0.65 per piece in 5000-piece quantities.

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Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay's product innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can be found on the Internet at

Editorial Contact:
Paul Harrison 
Senior MarCom Manager 
Vishay Intertechnology, Inc.
Telephone: +49-9287-712808
Fax: +49-9287-712809

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