PCB Assembly
Here, you can acquire professional knowledge covering the entire chain from PCB design to assembly, as well as precise analysis of the latest trends in the electronics industry.
What Is Solder Paste Inspection (SPI)? Measurements, Defects, and Quality Control
Solder paste inspection (SPI) checks paste deposited on a PCB after printing and before component placement. A 3D SPI system measures deposit volume, height, area, and alignment against programmed limits. It allows defective prints to be held and corrected before placement and reflow. For hardware engineers and PCBA buyers, the key decision is whether the…
What Are QFN Packages? A Practical Guide for PCB Design and Assembly
QFN packages appear in everything from power supplies and wireless modules to sensors, microcontrollers, and automotive electronics. Their small footprint, short electrical paths, and efficient heat transfer make them an attractive alternative to larger leaded packages. However, the same underside connections that save space also make QFN footprint design, soldering, and inspection less forgiving. So,…
BOM for PCB Assembly: How to Prepare a Clean PCBA BOM
A BOM for PCB assembly is more than a spreadsheet of parts. It is the sourcing and assembly control document that tells a PCBA manufacturer what to buy, what to populate, what to leave off, and which substitutions are allowed. If the BOM is unclear, the RFQ stalls before production ever starts. Many PCBA RFQ…
Gerber, BOM, CPL, and Stackup: What Each File Means
Gerber, BOM, CPL, and stackup files tell a PCB manufacturer four different things. Gerber files define the board layers. The BOM defines components. The CPL defines placement. The stackup defines layer construction, materials, copper, dielectric thickness, and impedance assumptions. Many PCBA quote delays happen before production starts. Why? The factory may have board data, but…
What Files Do You Need for a PCBA Quote?
A PCBA quote needs more than Gerber files. For an accurate PCB assembly quotation, send Gerber files, drill files, BOM, CPL, stackup if needed, quantity, lead-time target, and test requirements. These files tell the manufacturer what to fabricate, what to source, where to place parts, and how the finished board should be accepted. If those…
PCB DFM Checklist
A PCB DFM checklist helps engineers and buyers catch manufacturability problems before a board is quoted, fabricated, assembled, or released to production. The goal is to confirm that the supplier can build the design with the required stackup, tolerances, finish, test plan, and documentation. DFM review reduces engineering holds and helps buyers compare suppliers. If…
PCB Via Guide: Types, Design Rules, and Selection Tips
A PCB via is a plated interconnect that lets signals, power, ground, or heat move between copper layers in a printed circuit board. Via choice affects routing density, fabrication cost, assembly yield, signal integrity, and thermal performance, so it should be part of stackup and DFM planning, not a cleanup step at the end. For…
IPC-A-610: The Complete Guide to Assembly Acceptance
IPC-A-610 is the acceptance standard that decides whether a finished printed circuit board assembly is good enough to ship. It is the document your contract manufacturer's inspectors work from, the one your quality team argues about, and the one your purchase order probably cites without you ever having read it. Most engineers meet IPC-A-610 the…
SMT Meaning: Surface-Mount Technology Explained
SMT means Surface-Mount Technology: a method of attaching electronic components directly onto the surface of a printed circuit board (PCB). Rather than inserting long component leads through drilled holes, SMT uses small surface-mount components that are placed on solder-coated pads and permanently connected through controlled heating. In practical terms, SMT is what makes modern electronics…
PCBA File Requirements for Flawless Manufacturing
When preparing your printed circuit board design for assembly (PCBA), providing the right manufacturing files is the difference between a smooth product launch and a costly, delayed nightmare. While most Contract Manufacturers (CMs) will hand you a basic checklist asking for a BOM and Gerber files, modern Turnkey PCB Assembly requires far more comprehensive data…
