Sumitomo Electric Semiconductor Materials, Inc. (SESMI) is a company that specializes in compound semiconductor substrates that are used by customers to manufacture components for smartphones, light sources for optical communications networks, and other electronic devices. At our production facility, we perform final processing and inspection of GaAs (gallium arsenide) substrates. SESMI is also responsible for the sales of GaAs substrates, along with substrates made from InP (indium phosphide). More details on these products are provided below.
SESMI was established in 2000 in Hillsboro, Oregon, which is in Portland’s high-tech cluster known as Silicon Forest. We are part of the Sumitomo Electric Group’s international supply chain for high-quality compound semiconductors, and have built our business over the years by working closely with our customers in the United States to meet their stringent technical requirements. All of our products are manufactured to customer specifications. SESMI’s plant is ISO 14001 and ISO 9001 certified.
In wireless communications, GaAs substrates are used to fabricate power amplifiers and switches for smartphones. We produce GaAs wafers with exceptionally low variation in thickness to ensure uniform electrical characteristics throughout each wafer. For optical applications, GaAs substrates are suitable for infrared lasers such as VCSEL (vertical cavity surface-emitting lasers). GaAs substrates can also be used to manufacture high-power lasers and micro LEDs.
As the world’s communications networks continually grow in speed and capacity, InP substrates play a role in the ecosystem of electronics devices that make up these networks. On the optical side, InP wafers are used in the laser diode modules that transmit light signals along fiber optic networks. On the wireless side, InP is finding greater use as a material for high-frequency 5G devices.
For more information about our product lines and our ability to meet your specifications, please click here to click here to contact us and include the word “SESMI” in your inquiry.
Sumitomo Electric Semiconductor Materials, Inc.
7230 NE Evergreen Parkway
Hillsboro, OR 97124
Code of Conduct
The Code of Conduct of Sumitomo Electric Industries (SEI) states the Company's expectations that its employees conduct business in accordance with the Sumitomo Spirit and high ethical standards. We are committed to integrity and ethical business practices as we conduct business worldwide. For a copy of the Company's Code of Conduct, please go to https://sumitomoelectric.com/csr/coc
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