Showa Denko to Launch 6" SiC Epitaxial Wafers for Power Devices

Showa Denko to Launch 6" SiC Epitaxial Wafers for Power Devices 
To Contribute to Commercialization of Next-Generation Inverters 
Tokyo, Sept 30, 2013 - (JCN Newswire) -  Showa Denko (SDK) (TOKYO: 4004) will
next month launch silicon carbide (SiC) epitaxial wafers with a diameter of six
inches (150mm) - the largest size currently available on the world market - for
use in power devices.  The company will also start selling next month a new
grade of four-inch (100mm) SiC epitaxial wafers with fewer defects and higher
uniformity. 
SDK has so far been producing and selling three-inch (76.2mm) and four-inch
SiC epitaxial wafers.  In addition, SDK has worked to develop the
next-generation six-inch SiC epitaxial wafers that will lead to increased
productivity, providing samples since the beginning of this year.  As the
volume production technology has been established and the product
specifications have been prepared, the company has decided to begin commercial
shipments as from October. 
When compared with the mainstream silicon-based semiconductors, SiC power
devices using SiC epitaxial wafers can operate under high-temperature,
high-voltage, and heavy-current conditions, while substantially reducing energy
loss.  These features enable the production of smaller, lighter, and more
efficient power control modules.  SiC power devices are therefore expected to
be in high demand for use in inverters (devices for converting direct current
into alternating current) for automobiles, railcars, and industrial/home
electric appliances. 
Inverters based on SiC power devices are already used in such applications as
power sources of servers for data centers, distributed power supply systems for
new energies, and subway railcars.  The new six-inch SiC epitaxial wafers will
help reduce power-device production costs, and promote volume production of SiC
power devices with current capacity amounting to as much as 100A.  Thus,
SiC-power-device-based inverters are expected to be increasingly used in
electric vehicles and hybrid cars. 
Following the expansion of product lines, SDK will continue its efforts to
improve product quality and increase production capacity.  SDK is planning to
increase its SiC epitaxial wafer production capacity from 1,500 units a month
(in terms of four-inch wafers) at present, to 2,500 units a month by the middle
of 2014, contributing to the spread of SiC power devices. 
About Showa Denko 
Showa Denko K.K. ('SDK'; TSE: 4004, US: SHWDF) is a major
manufacturer and marketer of chemical products serving a wide range of fields
ranging from heavy industry to the electronic and computer industries. SDK
makes petrochemicals (ethylene, propylene), aluminum products (ingots, rods),
electronic equipment (hard disks for computers) and inorganic materials
(ceramics, carbons). The company has overseas operations and a joint venture
with Netherlands-based Montell and Nippon Petrochemicals to make and market
polypropylenes. In March 2001, SDK merged with Showa Denko Aluminum Corporation
to strengthen the high-value-added fabricated aluminum products operations, and
is today developing next-generation optical communications-use wafers. For more
information, please visit www.sdk.co.jp . 
Contact: 
Showa Denko (SDK)
Public Relations Office
Tel: +81-3-5470-3235 
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