All Sensors Corporation

All Sensors Corporation

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 Worcester, Massachusetts (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 forty years experience in the semiconductor industry. With over 3,000 employees worldwide, Allegro is headquartered in Worcester, MA, where corporate management, design, marketing and customer service are located in a 250,000 sq. ft. facility. The company also has a 100K sq. ft. business development facility in New Hampshire that houses business management, marketing, design, and product test.

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

North American Distributors

Arrow Electronics (Distributor, Allegro & Sanken Semiconductors) 
25 Hub Drive 
Melville, NY 11747 
Phone: 1-800-777-2776 for local distributor 

Digi-Key Corporation (Distributor,

Allegro & Sanken Semiconductors) 
701 Brooks Avenue South 
Thief River Falls, MN 56701 
Phone: 800-344-4539 or 218-681-6674 
Fax: 218-681-3380 

Newark InOne (Distributor, Allegro & Sanken Semiconductors) 

4801 N. Ravenswood 
Chicago, IL 60640 
Phone: 1-800-4-Newark for local distributor 

Ten Four Ltd. / B+D Enterprises (Distributor, Sanken Semiconductors Only) 

117 Liberty Street 
P.O. Box 460 
Russell, PA 16345 
Phone: (814)757-4444 / (814)757-8300
Fax: (814)757-5400 
Web:  /  /

Rochester Electronics (Distributor, Discontinued Allegro Products) 

10 Malcolm Hoyt Dr. 
Newburyport, MA 01950 
Phone: (978)462-9332 
Fax: (978)462-9512 

South Africa

Arrow Altech Distribution (Pty) LTD (Representative & Distributor, Allegro and Sanken Semiconductors) 

P.O. Box 701 
Phone: +27 11 9239600 
Fax: +27 11 9239884