Only the copper in the cut section of the through hole is removed by etching! The board thickness can be accommodated from 0.04 to 0.3 mm.
We would like to introduce our "Partial Etching Through-Hole Substrate." In printed circuit boards used as substrate for devices, after component mounting, through-holes may be diced and used as soldering electrodes. However, cutting the copper plating of the through-holes inevitably leads to burr formation. Our company enables the production of cut-through-hole substrates without burrs by selectively etching away only the copper at the cut portions of the through-holes. [Applications] ■ Substrate boards for devices with through-hole electrodes, etc. *For more details, please refer to the PDF document or feel free to contact us.
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Sanwa Electronic Circuit produces printed circuit boards used in various aspects of daily life, including smartphones, car navigation systems, computers, wireless devices, ETC, automotive equipment, and medical devices. Our company was founded in 1955 as Sanwa Electric Manufacturing Co., Ltd. After expanding production and sales through four group companies specializing in circuit boards, we integrated these companies in 2004 and launched as Sanwa Electronic Circuit Co., Ltd. with a new divisional structure. During this time, thanks to the guidance and support of our clients, we have developed and grown as a dedicated printed circuit board company for over half a century, advancing alongside the progress of printed circuit boards. We sincerely appreciate your continued support and patronage.