Manufacturing/Packaging 
Three Sun boards have 0.25mm hole diameter
Keywords: three sun four-layer pcb
[Summary of tips] Three Sun Ent. Co. Ltd has released four-layer PCBs that feature a thickness of 0.4mm and come with a line width and spacing of 0.1mm.Available with soft nickel and gold, immersion nickel and gold, HASL or Entek surface finishing, the boards have FR-4 base and dry-film, photo-imageable or silk-screen solder mask. It has a hole ......Please login or register with us to view this article>>
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