Technical Library
Evergreen technical reference articles on PCB fundamentals: surface-finish comparison, via formation, the process flow, test methods and equipment selection.
ENIG vs OSP vs HASL
The surface finish protects exposed copper and preserves solderability. Choosing among ENIG, OSP, HASL and immersion finishes is a trade-off of flatness, cost, shelf…
Read guide →Via Formation Methods
Vias connect layers. How they are formed—mechanical drilling, laser microvias, and whether they are filled or capped—drives both density and reliability.
Read guide →The PCB Manufacturing Process
A printed circuit board passes through a defined sequence of process stages. Understanding the flow makes it far easier to specify the right equipment…
Read guide →AOI vs Flying Probe vs Bed of Nails
Optical inspection and electrical test answer different questions. Knowing what each catches—and at what volume it makes sense—prevents both escapes and wasted capital.
Read guide →How to Choose PCB Equipment
Selecting equipment is a process of matching each machine to your board mix, volume, automation level and facility constraints. This guide walks through the…
Read guide →Subtractive vs Additive PCB Processes
Most PCBs are made subtractively—etching away unwanted copper—but additive and semi-additive processes are growing for the finest features. The choice shapes the equipment set.
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