SG Smallwood building in Kitchener Ontario.

S.G. Smallwood Inc.

designs and manufactures transformers, inductors and specialty windings to suit your circuit and product applications. Configurations include toroidal, ferrite, C-Core, laminated core styles for 50/60Hz, 400Hz and higher frequency applications to 1 MHz and more. We are consistently striving to improve the quality and manufacturability of our products.

Facilities: We are an 18,000 sq ft fully equipped facility that houses administration, sales, engineering, product development, quality control, manufacturing and packaging.

Products: Custom Transformers      Custom Inductors      Custom Windings      Custom Assemblies

Services: Product Design & Development 1      Custom Winding      Manufacturing Assembly / Build

Support: Engineering      Quality      Sales

Quality: ISO 9001:2015 certified certificate

Manufacturing capabilities:

Computer assisted design, precision toroidal winding, precision linear winding, layer winding, vacuum / pressure / bake epoxy encapsulation, varnish impregnation, fabrication of specialized custom parts and comprehensive computerized product testing. see details

Methods of Operation:
  • strong customer partnerships
  • well-established supply base
  • computer assisted design process
  • quality planning process from design to production
Company Objectives:
  • Design & Manufacture the Highest Quality Products
  • Customer Satisfaction & Service Excellence
  • Continuous Improvement
Code of Conduct:

We operate our company following a set of corporate values and code of ethics which defines how we deal with each other, our customers and our suppliers as well as how we treat our environment.

Industries We Serve: We serve a full range of industrial electrical electronic market sectors see details

History: The Company was founded by Stanley G. Smallwood in 1945, originally manufacturing radio and television coils.

Location: Kitchener Ontario Canada in the Golden Technology Triangle (Kitchener-Waterloo-Cambridge)


1. Product Design & Development are not stand-alone services but integral with our product manufacturing.