Multilayer PCB / image with dimensions added

Gerd · Post by **Gerd** » Mon May 08, 2017 2:28 pm

Recently I've been fiddling around with cutting PCBs into little pieces and take a closer look to the technical details after grinding and polishing. Additionally I have been infected by Charlies invention of UV flashlights for photomicrography. It is really interesting to see all the fluorescent material. The glass reinforcement is visible in longitudinal and transversal section as well. Two layers of copper are visible here. Incident brightfield and UV flashlight combined.
Gerd

Charles Krebs · Post by **Charles Krebs** » Mon May 08, 2017 10:48 pm

Very nice... graphic and informative!

Jacek · Post by **Jacek** » Tue May 09, 2017 12:43 am

Very nice

Marek Mis · Post by **Marek Mis** » Tue May 09, 2017 3:49 am

Very interesting and very good quality image !

Marek

mawyatt · Post by **mawyatt** » Tue May 09, 2017 5:09 am

Gerd,

Very interesting and beautiful image sir. Nice to see the glass beads in the Glass Epoxy G-10 material.

Is the lower Cu traces 1 mil thick, which I think is standard for typical PCBs?

Best,

Mike

WalterD · Post by **WalterD** » Tue May 09, 2017 11:30 am

Really interesting image, almost like a drawing. Thanks for sharing

carlos.uruguay · Post by **carlos.uruguay** » Thu May 11, 2017 5:35 am

Nice and interesting

Gerd · Post by **Gerd** » Sat May 13, 2017 2:27 pm

Thank you very much for all your kind comments.
@Mike, 1 mil for the lower copper thickness could be correct. From my measurment this is about 30µm, the upper layer about 35µm, just the thickness of normal one-layer PCBs you use in your home electronic lab.
Gerd

mawyatt · Post by **mawyatt** » Sat May 13, 2017 2:34 pm

Gerd,

Thanks.

Best,

Mike