Rigid-Flex PCBs: Flex-to-Install vs. Dynamic Flexing
A flex section formed during installation faces different demands from one that moves repeatedly in service. The intended motion guides stackup and reliability review.
READ ARTICLE01 PCB KNOWLEDGE & ENGINEERING REFERENCE
PCB Processes
Reference articles on PCB holes, back drilling, controlled impedance and manufacturing processes.
Resin-Filled Vias, Solder-Mask-Plugged Vias and Via-in-Pad
Resin filling, solder-mask plugging and via-in-pad describe different requirements. The right construction depends on the via location, assembly and fabrication process.
READ ARTICLEMulti-Step Drilling for Thick PCBs: Process and Quality Considerations
How board construction, entry and backup materials, controlled drilling, and inspection affect deep holes in thick multilayer PCBs.
READ ARTICLEHDI Stacked vs. Staggered Microvias: What to Confirm Before Choosing a Structure
Compare layer spans, routing space, via filling, sequential build-up and reliability when choosing an HDI stacked or staggered microvia structure.
READ ARTICLEPCB Controlled Impedance: How Stack-Up, Trace Geometry and Materials Work Together
Why an impedance target cannot be separated from the actual stack-up, and which parameters, net information and test requirements should be supplied for manufacturing review.
READ ARTICLEPCB Back Drilling: Purpose, Applications and Manufacturing Notes
How back drilling removes unused plated-through-hole stubs, where it is used and which inputs should be confirmed during engineering review.
READ ARTICLEPCB Hole Selection Guide: PTH, NPTH, Through, Blind, Buried and Special Holes
A practical way to classify PCB holes by conductivity, layer connection and function, with design details that should be made explicit for manufacturing.
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