Tutorials

Summary:Protect flex circuits from moisture, static, dust, temperature extremes, chemicals, pests, shock, trace overstress, faulty parts and bending design errors.

Summary:Learn QFN package construction, wire bond vs flip chip, leadframes, thermal and electrical behavior, bonding diagrams, marking and die attach.

Summary:Learn flex-rigid PCB materials and manufacturing processes, including polyimide, PTFE, traditional flex-rigid construction and embedded flexible circuits.

Summary:Learn FPC base materials, including adhesive and adhesiveless laminates, RA vs ED copper, polyimide thicknesses and common flex constructions.

Summary:Conformal coating on PCBs — what it is, why it matters for moisture and pollutant protection, and how to prepare for it in PCB design.

Summary:DFM checks stack-up, spacing, vias, surface finish, pads, fiducials and panelization before fabrication, cutting cost and raising board reliability.

Summary:PCB stack-up design for EMC — four key factors, five design objectives, signal/plane coupling, and symmetry requirements.

Summary:From DFM to solder paste, pick-and-place and reflow: how surface-mount and through-hole components are assembled onto bare PCBs in a modern SMT line.

Summary:Trace poor wetting on PCBs to date codes, dry storage under 40C and 90% RH, tarnished finishes, handling oils and recent solder-paste or flux changes.

Summary:SMT assembly Q&A: equipment, attributes, THT differences, solder paste printing, chip mounting, reflow soldering, inspection, and workshop requirements.

Summary:PCB prototypes catch design flaws early, shorten development, review manufacturability, test components individually and lower the cost of full production.