About Allegro

Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Manchester, New Hampshire (USA) with design, applications, and sales support centers located worldwide.

Allegro develops integrated circuit solutions focused on motor control, regulation, and magnetic field sensing applications. We provide highly integrated mixed-signal ICs, adding more components and greater functionality. Allegro's line has extensive product breadth and depth, with standard "plug and play" products.

  • Market leading Hall-effect sensor IC manufacturer with a broad portfolio of innovative solutions focused on the automotive market space
  • Customized packaging solutions that incorporate magnetic circuits to simplify applications issues
  • System-On-Chip power IC capability incorporating multiple power drivers, regulators, and control logic functions
  • Proprietary BCD (Bi-polar, CMOS, DMOS) and BiCMOS wafer process technology that allows the merging of dense digital circuitry with power and or magnetic sensing structures

Allegro's Businesses

Allegro is currently organized into two technology-defined business units. These business units are paving parallel paths of expansion, up-integration, and diversification by entering or broadening into markets with higher growth.

The Sensor group produces Hall-effect sensor ICs offering contactless sensing for applications such as direction-detection, gear-tooth, speed, linear, angle, current and position sensing for automotive, industrial, consumer, and portable electronics.

The IC group produces power ICs for motor drivers, motor control and switching regulation. Allegro's ICs are used in office automation (particularly printers), industrial, automotive and portable electronics markets.


Allegro understands that investment in manufacturing is critical to long-term success. The ongoing investment in IC fabrication, packaging, and testing facilities, both in the US and abroad, ensures that Allegro is poised to meet the needs of all customers. The company is committed to manufacturing integrated circuits with the highest standards of quality, reliability and service.

Allegro Facts

Allegro has more than forty years experience in the semiconductor industry. With over 3,000 employees worldwide, Allegro is headquartered in Manchester, NH, where corporate management, design, marketing and customer service are located. The company also has a  facility in Worcester, MA that houses R&D, Quality, Finance, and Operations groups.

Wafers are manufactured at an affiliated company (Polar Semiconductor) located in Minneapolis, Minnesota.  Production test and select product assembly is housed in a wholly owned subsidiary located in the Philippines.  There are additional remote sites worldwide that support design, applications, and sales functions. Sales are balanced worldwide throughout North and South America, Europe, Japan and Asia-Pacific, with products sold primarily to OEMs through a strong worldwide sales channel that includes a direct sales force, manufacturers representatives and distribution. The company is TS16949 and ISO14001 registered and has received quality awards from leading manufacturers worldwide.

We are a wholly-owned subsidiary of Sanken North America, Inc., a Delaware Corporation.  Our ultimate parent is Sanken Electric Co., Ltd, a billion-dollar company that manufactures semiconductors, discretes, LEDs, and switch mode power supplies, with headquarters in Saitama, Japan.  More information about our ultimate parent is available at www.sanken-ele.co.jp.


Responsible Business Alliance (RBA) Supporting Member

 As a Supporter Member of the Responsible Business Alliance (RBA), Allegro MicroSystems, LLC fully supports the vision and goals of the RBA:

  • Vision: A global electronics industry that creates sustainable value for workers, the environment and business.
  • Mission: Members, suppliers and stakeholders collaborate to improve working and environmental conditions through leading standards and practices.
Please click here to view our vision.
Allegro Global Organization
Please click here to view a map of our global operations.
Magnetic Sensor IC Overview
Please click here for an overview of our Magnetic Sensor IC Portfolio.
Power IC Overview
Please click here for an overview of our Power IC Portfolio.
General Information
Phone: 508-853-5000
Fax:     508-853-7895

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