Senju Metal Industry
A Tokyo-based solder materials maker that supplies lead-free solder, flux and BGA solder balls used throughout semiconductor packaging and board assembly.
千住金属工業・Packaging materials・Last updated: October 27, 2026
Overview
Senju Metal Industry is headquartered in Adachi, Tokyo and specializes in joining materials. Its products include lead-free solder alloys, soldering flux and solder balls for BGA packages.
These materials are used from chip bumps and package balls to surface-mount assembly on circuit boards.
Business: Solder, flux and solder balls
Why it matters
- Solder joints must survive thermal cycling between the chip, package and board, which have different expansion rates.
- Finer bump pitches in advanced packages need smaller, more uniform solder balls.
Main products
- •Lead-free solder
- •Soldering flux
- •BGA solder balls
Sites in Japan
Head officeHeadquarters
Adachi, Tokyo
Products (1)
- ECO SOLDER M705 (solder balls) · Assembly materials