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Toshiba Releases 600V Super Junction Structure N-Channel Power MOSFET that Helps to Improve Efficiency of Power Supplies

Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has expanded its line-up of N-channel power MOSFETs fabricated with the latest-generation process[1], with a 600V super junction structure suitable for data centers, switching power supplies, and power conditioners for photovoltaic generators. The new product, "TK055U60Z1," is the first 600V product in the DTMOSVI series. Shipments start today.

This press release features multimedia. View the full release here:

Toshiba: 600V N-channel power MOSFET TK055U60Z1 in the DTMOSVI Series. (Graphic: Business Wire)

Toshiba: 600V N-channel power MOSFET TK055U60Z1 in the DTMOSVI Series. (Graphic: Business Wire)

By optimizing the gate design and process, 600V DTMOSVI series products reduce drain-source On-resistance per unit area by approximately 13%, and drain-source On-resistance × gate-drain charge, the figure of merit for MOSFET performance, by approximately 52%, compared to Toshiba’s current generation DTMOSIV-H series products with the same drain-source voltage rating. This ensures the series achieve both low conduction loss and low switching loss, and helps to improve efficiency of the switching power supplies.

The new product is housed in a TOLL package that allows Kelvin connection of its signal source terminal for the gate drive. The influence of inductance in the source wire in the package can be reduced to accentuate the high-speed switching performance of the MOSFET, which suppresses oscillation during switching.

Toshiba will continue to expand its 600V DTMOSVI series line-up, and its already released 650V DTMOSVI series products, and support energy conservation by reducing power loss in switching power supplies.


[1] As of June 2023.


  • Data centers (switching power supplies for servers, etc.)
  • Power conditioners for photovoltaic generators
  • Uninterruptible power systems


  • Achieves low drain-source On-resistance × gate-drain charge and enables high efficiency switching power supplies

Main Specifications

(Ta=25°C unless otherwise specified)

Part number


Absolute maximum


Drain-source voltage VDSS (V)


Drain current (DC) ID (A)


Channel temperature Tch (°C)


Electrical characteristics

Drain-source On-resistance

RDS(ON) (mΩ)




Total gate charge Qg (nC)



Gate-drain charge Qgd (nC)



Input capacitance Ciss (pF)






Size (mm)




Sample Check & Availability

Buy Online

Follow the links below for more on the new product.


Follow the link below for more on Toshiba’s MOSFETs.


To check availability of the new products at online distributors, visit:


Buy Online

* Company names, product names, and service names may be trademarks of their respective companies.

* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation, a leading supplier of advanced semiconductor and storage solutions, draws on over half a century of experience and innovation to offer customers and business partners outstanding discrete semiconductors, system LSIs and HDD products.

The company's 21,500 employees around the world share a determination to maximize product value, and promote close collaboration with customers in the co-creation of value and new markets. With annual sales approaching 800-billion yen (US$6.1 billion), Toshiba Electronic Devices & Storage Corporation looks forward to building and to contributing to a better future for people everywhere.

Find out more at


Customer Inquiries:

Power Device Sales & Marketing Dept.

Tel: +81-44-548-2216

Contact Us

Media Inquiries:

Chiaki Nagasawa

Digital Marketing Department

Toshiba Electronic Devices & Storage Corporation

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