Jolt Capital backs Tempress with €20M as Tempress buys SPT Microtechnologies USA

Jolt Capital is investing €20 million in Tempress and backing Tempress’s acquisition of SPT Microtechnologies USA, a move meant to build a larger European semiconductor equipment platform. The deal brings together complementary furnace technologies, customer bases and international operations as chipmakers keep increasing demand for advanced equipment.

Why it matters: - The transaction combines two semiconductor equipment businesses with non-rival products, which can broaden the combined company’s technology stack without directly cannibalizing sales. - Tempress gains scale in a market benefiting from continued growth in microchip demand. - Jolt Capital’s first deal in the Netherlands adds another European semiconductor platform to its deeptech portfolio.

What happened: - Jolt Capital committed €20 million to Tempress and took a leading stake in the company. - Tempress signed an agreement to acquire SPT Microtechnologies USA Inc. from SPP Technologies Co., Ltd. - The acquisition includes SPT-USA’s subsidiaries in Germany and Taiwan. - The announcement was made July 15, 2026, in Paris and Vaassen.

The details: - Tempress makes thermal diffusion and deposition furnaces for high-growth “more-than-Moore” semiconductor segments, including power, SiC, photonics and MEMS. - Tempress’s vertical and horizontal furnace systems use high-temperature diffusion and chemical vapor deposition processes for semiconductor doping and functional coatings. - The company says its patent base supports uniform, high-quality material layers at industrial scale. - Tempress is based in Vaassen, Netherlands, and sells to semiconductor fabs and major R&D centers worldwide. - SPT Microtechnologies USA is based in San Jose, California, and specializes in vertical furnaces for complex MtM thermal processing. - The combined business is intended to strengthen product lines, geographic reach and access to additional key customers. - Tempress plans to integrate SPT-USA while maintaining operational continuity. - Tempress expects synergies in technology development, manufacturing efficiency and global service support. - Jolt Capital already backs European deeptech companies and focuses on B2B businesses with €10 million to €50 million in revenue. - Tempress is already backed by Innovation Industries, a Netherlands-based deeptech and impact venture capital investor. - The companies say the combined group will have almost 60 years of market presence.

Between the lines: - The deal is a consolidation play in semiconductor equipment, where scale, service reach and installed base can matter as much as product performance. - Combining complementary furnace platforms may help Tempress compete for more customers across power, SiC and other advanced chip segments. - The move also signals continued private equity interest in European industrial deeptech assets tied to semiconductor supply chains.

What's next: - Tempress will work to close the SPT-USA acquisition and fold the business into its operations. - Jolt Capital and existing shareholders will support Tempress’s growth strategy and future M&A. - The combined company will focus on expanding its global customer support and accelerating innovation.

The bottom line: - Jolt Capital’s €20 million investment and Tempress’s planned SPT-USA acquisition are designed to turn a specialist furnace maker into a bigger semiconductor equipment platform with broader reach and more scale.