Stellant Systems INC
At a glance
Employees100-499
In business since2021
HeadquartersWilliamsport, PA
SAM.gov UEIM7ANM2M6BKS7
Stellant manufactures active and passive RF components, control components, and vacuum tubes including klystrons, magnetrons, traveling-wave tubes, crossed-field amplifiers, and solid-state power amplifiers. The company provides RF assembly and ETL testing services. Its products serve defense, space, industrial, medical, and scientific industries.
Summarized from the company’s own website
Certifications
AS9100ISO 9001
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Stellant Systems INC | Williamsport | PA | 100–499 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.

