Founded in 1895, Thordarson's® commitment to manufacturing quality transformers, chokes and other magnetic components continues today. Thordarson® is proud of the reputation it has earned by meeting the ever-changing needs of the OEM. Serving the industry for over a century with a wide range of “innovative” and “quality” products from catalog off-the-shelf items to custom designs, Thordarson® is commited to the goal of being recognized as your World Class Supplier.

Thordarson’s® Capabilities:
Filament, Plate & Power Transformers
50 to 1,600 Hz - to 3,000 VA.-. 1, 2, & 3 Phase - To 10,000 V

International Step-up or Step-down
Auto & Isolation Transformers - 40 to 2,500 VA

Filter Chokes, High Q & Power Inductors
To 50 Amps AC & DC - Lamination & Toroidal Types

Audio Transformers - Miniature, Output & Line to Speaker
10 Hz to 200 KHz & 50 mW to 500 W

Constant Voltage Ferro-Resonant Transformers

SMPS Magnetics - To 350 KHz & 500 VA

Toroidal Inductors & Transformers - 0.250" to 4.0" OD

Thordarson® Meets All Saftey Standards
UL - CSA - IEC - VDE - CE & MIL-T-27 Specs -
Class 105C - 130C - 155C - 180C


2000: Our Engineering Facility, Henderson, Nevada

2000: Our Factory, MtCarmel, Illinois