Materials & Engineering
HASL vs ENIG: Choosing a PCB Surface Finish That Fits Your Board
Cost, flatness, shelf life and black-pad risk compared from the factory floor - with a decision rule you can apply in one minute.
Practical guides from the factory floor - surface finishes, HDI stackups, assembly processes and the buying decisions behind them. New articles monthly.
Cost, flatness, shelf life and black-pad risk compared from the factory floor - with a decision rule you can apply in one minute.
Build-up orders, stacked vs staggered microvias and via-in-pad explained - plus the honest thresholds where HDI beats through-hole.
Density, cost per joint, mechanical strength and thermal behavior - and why most real boards deliberately use both.