PCB Fabrication Drawing: What Must You Specify?
A PCB fabrication drawing defines the physical, material, dimensional, performance, and inspection requirements for an unpopulated printed circuit board. It
October 1, 2026
PCB Copper Weight: What 1 Oz And 2 Oz Really Mean
PCB copper weight describes copper mass per unit area, normally in ounces per square foot. It does not directly specify
PCB Trace Current Capacity: Width Is Not Enough
PCB trace current capacity depends on the finished copper cross-section, trace length, permitted temperature rise, surrounding copper, airflow, current duration,
PCB Via Current Capacity: How Many Vias Do You Need?
PCB via current capacity cannot be defined by one universal “amps per via” value. It depends on the finished copper
PCB Aspect Ratio: Can The Hole Be Plated?
PCB aspect ratio equals the hole depth divided by the drilled-hole diameter. For a plated through hole, manufacturers normally compare