Tag: PCB

PCBA Box Build: What Buyers Should Specify

A PCBA box build takes a finished circuit board and turns it into a product you can ship. Short answer: a box build — also called systems integration — mounts the PCBA in an enclosure, adds wiring, power, displays, and firmware, then runs a full functional test so the unit leaves the line ready to […]

SMT Stencil Design: Aperture, Thickness, and DFM Rules

A board passes design review. The paste prints, and a 0.4 mm QFP bridges on three pins. The QFN center pad traps flux gas and voids at 35 percent. None of this shows up in the schematic. It starts at the steel sheet that lays down the solder. SMT stencil design is the discipline that […]

PCB Packaging for Shipping: MSL, ESD, Moisture Control

A carton of bare boards lands on a customer’s receiving dock in July. Still, the box looks fine. Inside, one panel has a cracked corner. The pads on a second panel have dulled past their solderability window. And the bag that should have shielded the assembly turns out to be pink poly with no metal […]

PCB Bow and Twist: Limits, Causes, and How to Fix Warpage

A stack of bare boards arrived flat, passed incoming checks, and then bowed after the first lead-free reflow. The BGA coplanarity failed, the placement head scraped a panel, and the line stopped for two hours. PCB bow and twist is the measurement that catches this before it happens: for any board carrying surface-mount parts, IPC-A-600 […]

How to Get an Accurate PCBA Quote

A procurement lead forwarded a quote that looked 30% below the field. Two weeks later the invoice arrived with a stencil charge, an expedite fee, and a component overage they had never seen. An accurate PCBA quote starts long before the price — it starts with the files you send. Send four things upfront and […]

PCB Process Edge Design: SMT Rail Clearance Guide

A 0402 capacitor sits 2 mm from the board edge. During SMT assembly, the conveyor rail clamps down and crushes it before reflow even starts. This happens more often than you’d think. In our builds, we see this failure when designers treat the PCB process edge design as an afterthought rather than a first-order constraint. The fix […]

PCB Via Types: Cost, Design Rules & Selection Guide

A 0.65mm pitch BGA sits on your layout. You need to escape 800 pins, but through-holes eat every routing channel they touch. Do you jump straight to PCB via types like microvias, or can a smarter stackup save the budget? We review over 200 via specifications weekly, and roughly 40% of boards specified with blind or buried […]

PCB vs PCBA: Key Differences for Electronics Buyers

A purchasing manager once sent us a request for “500 PCBs” with a BOM attached, expecting fully functional units. We had to clarify that they actually needed PCB vs PCBA distinction understood before production started. This confusion happens more often than you’d think in electronics procurement. A Printed Circuit Board (PCB) is just the bare foundation, while […]