Infineon Technologies officially opened its new $1.4 billion backend semiconductor manufacturing site in Samut Prakan, near Bangkok, on October 1, with Thai Prime Minister Anutin Charnvirakul and Infineon COO Alexander Gorski presiding over the inauguration. The site currently employs around 350 people and is expected to grow to roughly 1,000 as the first building, Module A, ramps up production.
What the site does
Samut Prakan is a backend facility, meaning it handles the later stages of chip production: assembly, packaging and testing of finished semiconductors rather than the wafer fabrication done in front-end fabs. Infineon’s backend output centers on power modules, the components that convert and control electrical power in cars, industrial drives, renewable energy systems and consumer appliances. Demand for those modules is rising across the company’s automotive and industrial customer base, and the new site adds capacity at competitive cost while shortening supply lines to Asian customers.
Ground was broken in January 2025, when then-COO Rutger Wijburg launched construction alongside the Thai government. The first building was originally slated to be ready for operations at the beginning of 2026, with ramp-up managed flexibly against market demand. The October 1 inauguration puts that schedule roughly on track, though Infineon has not detailed how quickly Module A will reach full utilization.
Room to grow fivefold
The site is designed as a multi-stage campus. Module A is the first of up to five modules planned, and Infineon has secured about 200,000 square metres of land, roughly 120 rai in local units, for future expansion. The company says each additional module will be built in line with demand, keeping capital deployment flexible rather than committing to a fixed build-out calendar.
The Thailand Board of Investment supports the project, and the investment fits a broader Thai strategy to move up the semiconductor value chain. The country has long hosted electronics assembly and hard disk drive manufacturing, but front-end and advanced packaging work has historically gone to Taiwan, South Korea, Malaysia and Vietnam. Landing a marquee German chipmaker’s largest new backend site signals that Bangkok’s investment incentives and workforce programs are competing successfully for higher-value production.
| Site fact | Detail |
|---|---|
| Investment | $1.4 billion |
| Location | Samut Prakan, near Bangkok |
| Current staff | ~350, over 90% Thai nationals |
| Planned staff | ~1,000 as Module A ramps |
| Modules planned | Up to 5, built on demand |
| Land secured | ~200,000 sq m for expansion |
Workforce first
More than 90 percent of the current workforce are Thai nationals, and around 80 percent are skilled engineers and technicians, an unusually technical mix for a newly opened plant. Infineon built a training and education program covering AI, digitalization and automation, with the first group of Thai engineers completing it at other Infineon sites before transferring home. The company is positioning the site as a talent development anchor for Thailand’s semiconductor ecosystem, not just a cost arbitrage play.
Prime Minister Anutin called the site a strong vote of confidence in Thailand’s future as a leading semiconductor location. For Infineon, the plant diversifies its manufacturing footprint in Asia, where the company already operates backend sites in Malaysia and front-end capacity in Austria and Germany, and where geopolitical pressure has pushed most large chipmakers toward multi-country production strategies.
Where it fits in the supply chain
Infineon is the world’s largest power semiconductor maker by revenue, and power modules sit at the center of the electrification trend in autos and grid infrastructure. Electric vehicles use several times the semiconductor content of combustion cars, with power devices among the biggest line items. Adding backend capacity in Southeast Asia places that production close to regional carmakers and industrial customers while hedging the concentration risk of packaging capacity that remains heavily clustered in a few countries.
The inauguration also lands in a year when chip supply security has re-entered the political agenda in both Washington and Brussels, with governments subsidizing domestic capacity but accepting that full self-sufficiency in packaging and testing is unrealistic. Diversified backend networks in allied countries, Thailand among them, are the pragmatic middle path, and Infineon’s $1.4 billion bet is a bet that this model keeps winning orders. The memory shortage that has lifted prices across the industry this year has also reminded buyers how quickly capacity constraints propagate through the supply chain, and power components are not immune to the same dynamics.
Thailand’s chip push
The Thai government has spent the past two years courting semiconductor investment through the Board of Investment, offering tax incentives and infrastructure support to firms willing to build beyond simple assembly. The country’s existing electronics base gives it a credible workforce pipeline, and its position within ASEAN supply networks makes it a natural second source for companies already producing in Malaysia and Vietnam. Infineon’s project is among the largest single investments in that push, and its success or struggles will shape whether other European and American chipmakers follow.
What comes next
The company has not announced timelines for Modules B through E, and ramp-up pace will track demand from automotive and industrial customers, which has been uneven through 2026. But the opening itself is the milestone Thailand wanted: a flagship foreign investment in its chip push, a thousand skilled jobs on the way, and a seat in the conversation about where the world’s semiconductors get finished.