Innovation by tradition: Isabellenhütte can look back on more than 500 years of history.
First documentary mention of the “copper smelter on the Nanzenbach”.
The name “Isabelle Kupferhütte” is adopted; silver, lead and copper foundries are already in operation by this time.
Isabellenhütte comes into the ownership of the Heusler family.
First production of manganese (98% purity) and copper-manganese alloys.
The alloy Manganin® is developed in collaboration with the Physical and Technical Institute of the German Reich (PTR). Manganin® remains an essential material in our precision and power resistors.
Friedrich Heusler (1866 - 1947) discovers the ferromagnetic properties of what would later become the “Heusler alloys” (alloys from nonferrous metals).
Thermoelectric and resistance alloy division established. The company begins marketing thermoelectric alloys and developing foreign markets.
Insulation works built.
Hot rolling mill built; the first electrical components are developed.
Isabellenhütte becomes a member of the German Calibration Service (Deutscher Kalibrierdienst).
Production of the world’s first SMD mOhm precision current-sensing shunt.
The company develops a patented process for making electron-beam welded components and introduces the current ISA-WELD® range.
Certification to DIN EN ISO 9002
Certification to DIN EN ISO 9001
Certification to ISO/TS 16949; ISA-ASIC (Application Specific Integrated Circuit) developed.
First production use of ISA-ASIC in battery management systems.
IECQ-CECC acquired as supplement to ISO/TS 16949:2002
Precision measurement range launched.
Introduction of VMx series of SMD resistors; 3-tonne vacuum induction furnace enters service.
Acquisition of our longterm trade partner ISOTEK and first international subsidiary in USA
Foundation of our subsidiary in Tokyo, Japan. Isabellenhütte K.K.
Foundation of our subsidiary in Shanghai, China, Electronic Technology Trading Co., Ltd.Certification DIN EN ISO 14001 / DIN EN ISO 50001 (Environmental- and Energy Management)
Opening calibration authority DAkkS, Set-up pilot plant for small-scale alloys orders
Rebuilding components production-line, Set-up central building apprenticeship
Set-up measurement plant