The first powered board produces more than a pass or fail result. It produces evidence about the design assumptions: which rail starts first, what the connector actually does, how hot the regulator becomes, and what the firmware sees during a fault. ...

Reference designs are excellent engineering shortcuts. They show a topology that has been built, measured, and documented. The mistake is treating the reference board as a finished product design. A production board adds a different enclosure, a diff...

Fabrication notes are often treated as administrative text added after routing is complete. That is risky. A note about copper weight, solder mask, impedance, surface finish, or edge clearance can change the electrical, mechanical, and assembly behav...

The final hour before releasing a PCB is rarely the right time to discover that a connector footprint has the wrong pin numbering or that a high-speed net has no defined return path. A short, repeatable review catches many expensive mistakes before f...

When a prototype works, teams often freeze the BOM too early. The electrical value may be correct, but the package, temperature grade, lifecycle status, approved vendor, moisture sensitivity, and replacement rules are still undefined. That is where m...