Infineon buys Siltectra to boost silicon carbide production

Business news |
By Nick Flaherty

Siltectra has developed a technology called Cold Split to process crystal material efficiently and with minimal loss of material. Infineon will use the Cold Split technology to split SiC wafers, doubling the number of chips out of one wafer. The purchase price of €124m was agreed with the main shareholder, venture capital company MIG Fonds.

“This acquisition will help us expand our excellent portfolio with the new material silicon carbide as well. Our system understanding and our unique know how on thin wafer technology will be ideally complemented by the Cold Split technology and the innovative capacity of Siltectra,” said Dr. Reinhard Ploss, CEO of Infineon. “Thanks to the Cold Split technology, the higher number of SiC wafers will make the ramp-up of our SiC products much easier, especially regarding further expansion of renewable energies and the increasing adaptation of SiC for use in the drive train of electrical vehicles.”

“We are glad to become part of the team of the global market leader in power semiconductors. Having shown that the Cold Split technology can be used at Infineon in principle, we will now work together to transfer it to volume production,” said Dr Jan Richter, CTO of Siltectra.

“Since we invested in Siltectra more than eight years ago, we have always believed in the Cold Split technology and the great team. We are very pleased that we found Infineon as a buyer who fits perfectly technologically as well as culturally to the company,” said Michael Motschmann, General Partner of MIG’s parent company.

Siltectra was founded in 2010 and has been growing an IP portfolio with more than 50 patent families. The start-up developed a technology for splitting crystalline materials with minimal loss of material compared to common sawing technologies. This technology can also be applied with the semiconductor material SiC, for which rapidly rising demand is expected in the coming years. SiC products are already used today in very efficient and compact solar inverters. In the future, SiC will play a more and more important role in electro-mobility. The Cold Split technology will be industrialized at the existing Siltectra site in Dresden and at the Infineon site in Villach, Austria. The transfer to volume production is expected to be completed within the next five years.

Infineon is the only company worldwide with volume production of power devices on 300 mm silicon thin wafers which makes the company well placed for thin wafer producton of SiC devices. The Cold Split technology will help to secure the supply of SiC products, especially in the long run. Over time, further applications for the Cold Split technology might emerge, such as boule splitting or the use for materials other than silicon carbide.

MIG Verwaltungs is one of the leading German Venture Capital investors and manages a portfolio of 24 companies.

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