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Inductors: Multilayer 0402 type with world's highest Q and reduced package size

  • Q factor of 21 at 1 GHz
  • Extremely compact dimensions of 0.40 mm x 0.20 x mm 0.20 mm
Inductors: Multilayer 0402 type with world

Jan. 26, 2016

TDK Corporation announces the new MHQ0402PSA series of multilayer inductors in case size IEC 0402. Measuring in with reduced dimensions of just 0.4 mm x 0.2 mm x 0.2 mm, the new inductors feature a Q factor of 21 at 1 GHz, the highest value for any multilayer inductor of its size*, making them suitable for RF applications in smartphones, tablets and other mobile devices. Mass production began in January 2016.

The high Q of 21 of the MHQ0402PSA series at an inductance of 0.3 nH, represents an improvement of over 30 percent compared to TDK's existing MLG0402Q series. The achievement of the high Q factor in an extremely compact package was made possible by TDK's proprietary dielectric materials technology, combined with an optimized coil pattern and an internal electrode cross-section design with a high aspect ratio.

Thanks to their miniature size and high Q, the new multilayer inductors are designed to make RF circuits in multifunctional mobile devices such as smartphones and tablets even more efficient. With the addition of the new series to the existing lineup of MHQ1005P (1.0 mm x 0.6 mm x 0.5 mm), MHQ0603P (0.65 mm x 0.35 mm x 0.35 mm), and MHQ0402P (0.44 mm x 0.24 mm x 0.24 mm) products, the TDK portfolio now comprises four series of high Q inductors, providing excellent design versatility for a wide range of applications.

  • * As of December 2015, according to TDK investigations


  • Q: The Q (quality) factor of an inductor is the ratio of its inductive reactance to its resistance at a given frequency, and is a measure of its efficiency. The higher the Q factor of the inductor, the closer it approaches the behavior of an ideal, lossless inductor.

Main applications

  • Smartphones, tablets, Bluetooth and WLAN devices
  • RF circuits and modules for mobile communication devices, including PAs, VCOs, and front-end modules

Main features and benefits

  • High Q factor contributes to reduced losses in RF circuits
  • Extremely compact dimensions thanks to an optimized coil pattern and an internal electrode cross-section design with a high aspect ratio.

Key data

Typical Q
Min. self-resonant
Max. DC resistance
Max. rated current
MHQ0402PSA 0.2 to 8.2 21 (at 1 GHz) 4 to 10 0.15 to 1.20 180 to 600

About TDK Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes electronic components, modules and systems* marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2015, TDK posted total sales of USD 9.0 billion and employed about 88,000 people worldwide.

  • * The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.


Contacts for regional media

Japan Mr. Akira TESHIMA TDK Corporation
Tokyo, Japan
+813 6778-1055
TDK Singapore (Pte) Ltd.Singapore +65 6273 5022
Greater China Ms. Clover XU TDK China Co., Ltd.
Shanghai, China
+86 21 61962307
Europe Mr. Frank TRAMPNAU TDK Europe GmbH
Duesseldorf, Germany
+49 211 9077 127
America Ms. Sara M. LAMBETH TDK Corporation of America
Irving, TX, USA