
Powerex serves
its customers by providing devices used in power electronics applications ranging from power generation
and industrial production to information processing and electrical home appliances. Powerex offers
the most experienced team in the field combining the corporate expertise of GE and Westinghouse, both
pioneers in power electronics, with Mitsubishi Electric, the world leader in power module development.

Darrah Electric stocks a
broad range of Powerex products. Found on our shelves, a large selection of stud type and hockey puck
type silicon diodes and thyristors.
Darrah also carries Powerex's line of isolated thyristor and diode modules, IGBT's, driver circuits and
assemblies.
Link to:
www.pwrx.com

Dynex Semiconductor, the recently
acquired Lincoln business unit from Mitel Semiconductor, designs and manufactures an extensive range
of Power Semiconductor devices. Employing state of the art technology throughout the diffusion, assembly,
and testing, Dynex Semiconductor's product range includes high current Phase Control Thyristors and Rectifier
Diodes in disc packages with ratings extending to 6.5kA and to 6.5kV. In addition, Dynex Semiconductor
offers it's own proprietary line of IGBTs with ratings from a few amperes in discrete plastic packages
to thousands of amperes in isolated module packages having voltage ratings from 300 to several thousand
volts. The Dynex product line also includes GTO Thyristors, Asymmetric Thyristors, Fast Recovery Diodes,
Fast Switching Thyristors, and Power Assemblies.
All Dynex Semiconductor products are supported by an engineering staff experienced in finding innovative
solutions to customer's power semiconductor requirements - they are your current solution.

The Darrah Electric Company has worked in partnership with the Lincoln Business Unit for many years.
This facility in Lincoln has formerly been under the divisions of Marconi Electronic Devices, GEC Plessey
Semiconductors, and Mitel Semiconductor, Power Division.
Darrah Electric is recognized for delivering QUALITY products and services and maintains a $3 Million
inventory of Dynex Semiconductors and assemblies. With a staff dedicated to servicing the demanding North
American Power Market , solutions are only a phone call away.
Link To :
www.dynexsemi.com

IXYS Corporation is a world
leader, recognized for power semiconductor product development, with a reputation of leadership in semiconductor
packaging innovation since 1957. IXYS is dedicated to providing advanced power semiconductors to meet
the demanding requirement of power electronic applications. Their product portfolio of Power MOSFETs,
IGBTs, FREDs, Thyristors and Diodes are available in package options ranging from discretes to multi-chip
modules.
IXYS is made up of a team of professionals dedicated to providing efficient, cost effective semiconductor
solutions to meet a multitude of power control needs. Headquartered in California's Silicon Valley, the

y
have differentiated themselves by focusing on the higher power end of the semiconductor product spectrum.
Year after year, IXYS products continue to provide proven quality and reliability in such diverse power
applications as switching and uninterruptible power supplies, motor drives for transportation, and inverters.
Link To:
www.ixys.com

Microsemi Corp. Colorado
is a dynamic, growth-oriented company that manufactures a broad line of Schottky, Ultrafast Standard
Recovery Rectifiers and SCR's.
Built on a solid foundation of over 25 years experience, the company has significantly expanded its product
line, which enables Microsemi to offer our customers the convenience of "one source shopping"
for power rectifiers and diodes. In addition, Microsemi manufactures custom and semi-custom products
and assemblies to meet your specific and unique needs.
Microsemi Corp. is "the" source for high quality stud mounted diodes and SCR

's.
Darrah Electric stocks their complete range from 12 amp through 300 amp sizes and in voltages to 1600
volts.
Darrah also inventories Microsemi's complete line of molded bridges and power heat sink assemblies. Microsemi
is also the preferred source for high voltage rectifier stacks available to 72 kV on a single stack.
Link To:
http://www.microsemi.com
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In the early 1970's, Crydom designed, patented, manufactured and created
the worlds industry-standard Solid State Relay (SSR). Since then Crydom has maintained its leadership
position as demonstrated by its introduction of innovative products such as multipole devices,
circuit board mounts and isolated module types.
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Crydom manufactures over 1,000 different models of SSRs, as well as a broad range of
thyristor/diodes, I/O modules and transient voltage suppressors (TVS), many of which are found on Darrah's
shelves.
Crydom manufactures an extensive range of SSRs, from 1 amp to 150 amps, in industry-standard designs
and mounting options.
Darrah stocks Crydom's complete line of SCR/Diode modules from 15 through 150 Amp sizes in all common
circuit configurations and package types.
Link To:
http://www.crydom.com
METAL
OXIDE VARISTORS
SELENIUM SUPPRESSORS
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Darrah Electric Company stocks a wide range of Selenium Voltage Suppressors and Rectifiers.
Suppressor ratings are available from 3 amp through 900 amps in Polarized (DC) and Non-Polarized
(AC) types.
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Selenium Suppressors have the ability to dissipate power continuously and handle long surges. They
are able to absorb energy in excess of their rated capacity while maintaining its clamping characteristics
on the next cycle.
Darrah has application notes and technical reports available to understand and use Selenium Suppressor
products.
Darrah Electric also carries a full line of Metal Oxide Varistors, MOV's. We carry standard and high
efficiency radial leaded types as well as high-energy special packaged products.
All MOV's are UL recognized.
Call today for catalog and application information.

ABB Semiconductors Switzerland (previously
BBC Semiconductors) and ABB Semiconductors Sweden (previously ASEA Semiconductors) merged in September
1991 to form ABB Semiconductors.
ABB's on-going investment in Bipolar and Bi-MOS Technology offers the most complete range of high power
semiconductors available today. This investment, coupled wi

th
more than 50 years experience in some of the most demanding application in High Power Electronics,
gives you the assurance of working with a partner whose reputation for innovation, technology, reliability
and service has become a benchmark in the industry.
ABB's product lines include:
LoPak IGBT Modules, IGCT's, GTO Thyristors, Bi-Directional Control Thyristors, Fast Switching Thyristors,
Fast Recovery Diodes, Rectifier Diodes, Breakover Diodes, Silicon Voltage Suppressors, Clamps and Power
Assemblies.
Link to ABB:
http://www.abb.com/semiconductors