20-Layer ABF Substrate Guide: Structure, Materials, Process and Cost What a 20-Layer ABF Substrate Is A 20-layer ABF substrate is a high density IC package substrate built with ABF build-up film as the dielectric, used to connect a semiconductor die to the PCB motherboard. AI processors, GPUs, CPUs, FPGAs, ASICs…

BGA Reballing Guide: Process, Equipment, IPC Standards and Cost What BGA Reballing Is BGA reballing is the professional rework process of removing a ball grid array chip from a board, stripping the old solder balls from its underside, attaching a fresh set of uniform balls and re-soldering the component back…

PCB Dimensions Guide: Board Size, Thickness and Tolerance Standards What PCB Dimensions Really Include PCB dimensions are the complete set of mechanical parameters that define a bare board, not just its length and width. A full dimension set covers the board outline, the finished thickness, the copper weight on each…

PCB In Circuit Test (ICT) Guide: Process, Fixtures and Costs What PCB In Circuit Test (ICT) Means PCB in circuit test, usually shortened to ICT, is an automated electrical test applied to an assembled board to verify that every component is present, correctly placed, correctly valued and properly connected before…

PCB Solder Mask Touch Up: Process, Standards and Cost Guide What PCB Solder Mask Touch Up Means PCB solder mask touch up is the controlled repair of local solder mask defects on an otherwise good board, using matching mask material instead of scrapping the whole panel. Solder mask protects the…

Smart Water Meter PCB: Design, Material and Cost Guide What a Smart Water Meter PCB Does A smart water meter PCB is the electronic core of a modern metering device, replacing the simple register of a mechanical meter with sensing, computing, storage and wireless communication on one board. The smart…

Plasma Etching vs Chemical Etching: PCB Process Comparison Guide Why the Etching Process Decides Trace Quality Plasma etching and chemical etching both remove unwanted copper to form circuit traces, but they produce very different results in precision, edge quality and cleanliness, and choosing between them affects the cost and reliability…

PCB Plating Thickness: Standards, Measurement and Design Guide Why PCB Plating Thickness Drives Reliability PCB plating thickness is the amount of metal deposited on the conductors and hole walls of a board, and it controls conductivity, mechanical strength, thermal behavior and long-term reliability. The most critical value in manufacturing is…

Flexible PCB Outline Design: Process, Tolerance and Cost Guide Why the Flexible PCB Outline Deserves Attention The flexible PCB outline is the mechanical profile of the board, and it decides whether the finished flex circuit assembles cleanly, bends reliably and survives volume production. Engineers spend most of their design effort…

High Voltage PCB Material Selection Guide for Reliable Design Why High Voltage PCB Material Choice Matters Choosing a high voltage PCB material is the first and most important step in any power electronics design, because the laminate must do far more than carry current and signals. Ordinary products operate below…