MEMS Infinity Drives Environmental Responsibility in MEMS Fabrication, Launching
Foundry Services for Lead-Free Piezoelectric Thin Films provided by Sumitomo
Chemical.--Prominent foundry offers lead-free KNN piezo thin films to device manufacturers
AMAGASAKI, HYOGO, Japan — December 15, 2025 — MEMS Infinity, the commercial
microelectromechanical systems (MEMS) foundry division of Sumitomo Precision Products
Co., Ltd. (Sumitomo Precision Products), today announced the availability of potassium
sodium niobate (KNN), supplied by Sumitomo Chemical Company, Limited（Sumitomo
Chemical）, headquartered in Chuo-ku, Tokyo, a lead-free option for piezoelectric thin films.
This industry-changing move opens high-performance, environmentally responsible
piezoelectric material to a global audience of device manufacturers now facing tightening
environmental regulations and corporate sustainability requirements.
Piezoelectric materials transduce electrical energy to mechanical energy and vice versa,
making them attractive for applications requiring precise performance in a robust, ultraminiaturized
form factor. Yet stricter environmental regulations — including Restriction of
Hazardous Substances (RoHS) and Registration, Evaluation, Authorization, and Restriction
of Chemicals (REACH) in Europe — as well as the broader rise of Environmental, Social and
Governance (ESG)-driven product strategies, are spearheading the effort to eliminate lead
(Pb) throughout the semiconductor supply chain. This shift is particularly prominent in
medical, bio-related, and wearable electronics, in which lead-free materials are increasingly
mandatory for device adoption.
“KNN offers strong piezoelectric response without the use of lead. Until recently, however,
difficulty in thin-film formation and subsequent processing of KNN has slowed its path toward
practical commercialization,” said Mr. Tsuyoshi Takemoto, General Manager, MEMS Infinity.
“The addition of KNN thin-film processing to MEMS Infinity’s broad portfolio of
piezoelectric materials changes this dynamic, giving our customers greater flexibility in device
design and material selection. In this way, we can accelerate the technical advantages of leadfree
piezoelectric materials in those vital applications for which lead is prohibited by
regulation.”
Technical Attributes of KNN Thin Films with MEMS Infinity Processing, a division of
Sumitomo Precision Products
MEMS Infinity’s new foundry service combines the advantages of KNN thin films provided
by Sumitomo Chemical. with MEMS Infinity’s field-proven expertise in piezoelectric MEMS
for 150mm and 200mm wafer processing. Leveraging decades of experience in volume
production of piezoelectric gyroscopes and other piezoelectric MEMS devices, MEMS Infinity
provides a full suite of foundry services for KNN-based actuators, sensors, and other
piezoelectric MEMS devices that were previously difficult to fabricate.
MEMS Infinity also offers comprehensive services for the development and design of KNNbased
MEMS and photonics devices through its USA-based alliance partner, AMFitzgerald —
further speeding the path to commercialization for its customers.
▼PDF documents are here
【About MEMS Infinity】
MEMS Infinity is advancing the development and mass production of MEMS sensors and
actuators for diverse industries. Featuring a 20,000 square-foot cleanroom housing 150mm
and 200mm wafer fabrication lines — which include PZT-specific patterning equipment and
proprietary high-figure-of-merit PZT thin film deposition as well as silicon deep reactive ion
etching (Si DRIE) — MEMS Infinity is located in the industrial and technology hub of
Amagasaki. MEMS Infinity expands the scope of MEMS offerings that Sumitomo Precision Products
Group has successfully delivered for over three decades. The company uses productionproven
tools that are certified to meet ISO standards for quality and environmental
sustainability. For more information, visit
https://www.spp.co.jp/en/infinity or email: memsinfinity@
spp.co.jp
【About Sumitomo Precision Products】
Founded in 1961, Sumitomo Precision Products is a leading provider of precision
technologies and manufacturing services. Its core business capabilities include a full line of
MEMS-related offerings: manufacturing equipment, process development, foundry
production, test and manufacturing. Guided by a core set of principles that value integrity in
all business practices, Sumitomo Precision Products seeks to advance a more sustainable
society through technology innovation. For more information, visit
https://www.spp.co.jp/en/
[Inquiries regarding interviews]
Sumitomo Precision Products Co., Ltd. General Affairs Group, Public Relations
Phone: 81-6-6482-8811
Contact:here
Service Inquiries
Mario Kiuchi, PhD, MEMS Infinity
Email:kiuchi-m@spp.co.jp
