HDI second-order 12-layer
12 layers, Thickness: 2.0mm, Solder Mask: Matte black
4 layers, Thickness: 1.6mm, Solder Mask: Rose red
4 layers, Thickness: 1.6mm, Solder Mask: None
6 layers, Thickness: 1.6mm, Solder Mask: None
8 layers, Thickness: 1.6mm, Solder Mask: Matte black
6 layers, Thickness: 1.6mm, Solder Mask: Matte black
6 layers, Thickness: 1.6mm, Solder Mask: Matte black
4 layers, Thickness: 1.4mm, Solder Mask: Purple
8 layers, Thickness: 1.6mm, Solder Mask: Red
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私達のカスタマーサービス+86-571-85317532
A very, very easy build, and the finished device works perfectly. Note that my photos show a previous generation of the 3D printed case which required a bit of manual trimming around the amp module.
Phil Atkin
Of the 18 boards populated, 1 failed to operate, 1 had issues. The other 16 were operational. The process was pretty seamless - a few issues from my end regarding BOM descriptions, but otherwise all good. I will probably look at some advanced verification next time to ensure better yield rates.
Lucinsky