![]() Calumet Electronics Calumet Electronics is a company that designs and manufactures printed circuit boards (PCBs). | Sierra Circuits Sierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards. | ||
Founding Date | Founding Date 1950 | Founding Date 1968 | Founding Date 1986 |
Type | Type Private | Type Private | Type Private |
Tags | |||
Locations | Locations Lecco, IT HQ | Locations Calumet, US HQ | Locations Sunnyvale, US HQ Delta, CA |
Employees | Employees 33 | Employees 1186% increase | Employees 478 |

Calumet Electronics is a company that designs and manufactures printed circuit boards (PCBs).
View companySierra Circuits (also known as Sierra Proto Express) is a company that manufactures and assembles printed circuit boards.
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