and black sticks (M3 spacers dressed in heat shrink tubes). Black borders are copper traces left for soldering. Unfortunately, most manufacturers put the coloured logo marks on FR4 epoxy base.

It’s a GSM cell phone with a case made out of FR4. It’s beautiful, and if you’re ever in need of a beautifully crafted burner phone, this is the one to build. The components, libraries ...

Coherent Corp. has announced the launch of its new 2x400G-FR4 Lite optical transceiver, designed for AI-driven data centers and Ethernet networks. This silicon photonics-based module offers a ...