Silicon Almanac. Search Calendar Your desk
Fabs · Fab

Ulm site

United Monolithic Semiconductors, Ulm, Baden-Württemberg, Germany. Every field this record holds on the site, its note and every source, as the row states them.

Every figure links to its publisher What changed, and when →
01

The row

Operator
United Monolithic Semiconductors
Site
Ulm site
Location
Ulm, Baden-Württemberg, Germany
Type
compound
Status
operating
Wafer
100 mm
Nodes
not recorded
First output
not recorded
Announced investment
not recorded
Map position
48.42, 9.94, on the map

GaAs and GaN-on-SiC compound semiconductor foundry. UMS states that its GaAs and GaN-on-SiC technologies are 'processed on industrial manufacturing lines located in Germany', names Ulm as its production site, and gives United Monolithic Semiconductors GmbH's address as Wilhelm-Runge-Straße 11, Ulm. Europractice gives a wafer size of 4 inches for UMS processes. UMS's head office is at Villebon-sur-Yvette, France. Site, country and approximate coordinates corrected 14 October 2026 from Villebon-sur-Yvette, which Wikipedia's list gives.

02

Sources

5 sources on this row, in the order the row lists them. The order carries no weight.

List of semiconductor fabrication plants - Wikipedia · en.wikipedia.org

Foundry Services - UMS · ums-rf.com

GH10 launch press release, 3 December 2025 - UMS · ums-rf.com

Impressum - UMS · ums-rf.com

UMS - Europractice · europractice-ic.com

03

Capacity statements

No published capacity statement names this site. Blank is unpublished, not zero.

04

On this record

What this record changed on this row, newest first. Each day is the day this record changed, never the day a publisher said it. Followed: status, first output year, announced investment, operator, name, site and sources.

2026-10-14 · This record changed the name from Villebon-sur-Yvette site to Ulm site. This record changed the site from Villebon-sur-Yvette, Île-de-France to Ulm, Baden-Württemberg. · Source added: GH10 launch press release, 3 December 2025 - UMS · Source added: Impressum - UMS · Source added: UMS - Europractice

2026-10-01 · This record changed the sources on the row, from 1 to 2. · Source added: Foundry Services - UMS

2026-08-13 · The row entered this record, with the status operating. · Source at entry: List of semiconductor fabrication plants - Wikipedia

Every site, on the map and in the table