Huaxing PCBA PCB manufacturing insights and articles

Insights & Resources

Technical articles on PCB design, manufacturing, and industry best practices. Written by our engineering team.

Solder Mask Dam Width & Sliver

Solder Mask Dam Width & Sliver

Only the first two are real constraints. When a designer asks for a 0.05 mm dam over a trace routing channel, they are usually asking for something that carries no process risk

Press

Press

Five variables decide how much force a joint will hold, and only one of them is controlled by the fabricator. The others are set by the design and by the connector the buyer

Conformal Coating Creep

Conformal Coating Creep

This page sets out the capillary mechanism that decides penetration, the gap heights at which each chemistry stops moving, a package-by-package verdict including the cases where

Solder Paste Printing Defects: What Each One Actually Costs

Solder Paste Printing Defects: What Each One Actually Costs

What a printing defect costs at SPI, AOI, ICT and in the field, a cost model you can run on your own volumes, and the four levers that move printing yield.

PCB Laminate Selection: The Cost Side of Dk, Tg and Thermal Conductivity

PCB Laminate Selection: The Cost Side of Dk, Tg and Thermal Conductivity

High-Tg FR-4 vs RF laminates vs metal-core: what each one changes, what it costs per square metre, the MOQ and lead-time penalty, and the cost of choosing wrong.

ICT vs FCT: Test Coverage, Fixture Cost and the Break-Even Volume

ICT vs FCT: Test Coverage, Fixture Cost and the Break-Even Volume

Test coverage matrix, fixture NRE break-even by volume, and the cost of an escaped defect: how to choose between ICT, FCT, flying probe and boundary scan without over-testing.

Dross Rate on a Wave Solder Pot: What Causes It and How the PO Caps It

Dross Rate on a Wave Solder Pot: What Causes It and How the PO Caps It

Dross is not a fixed cost of wave soldering. How alloy, bath depth, skimming frequency and nitrogen move the dross rate, the numbers to demand, and the PO clause that caps it.

Heat-Set Inserts vs Thread-Forming Screws: Which to Specify

Heat-Set Inserts vs Thread-Forming Screws: Which to Specify

When a plastic enclosure needs metal threads — insert type, boss design, wall thickness and melt damage, and the per-unit cost trade against thread-forming screws.

Flux Activator Depletion: Diagnosing Non-Wetting That Starts Mid-Run

Flux Activator Depletion: Diagnosing Non-Wetting That Starts Mid-Run

Flux that has lost its activators looks identical to fresh flux. How to tell activator depletion from oxide, profile and contamination causes, and what to put in the PO.

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