Oil Resistant PCB: Black Solder Mask for Harsh Environments Boards That Live in Oil Most circuit boards operate in air. A growing number operate in oil mist, lubricant spray, hydraulic fluid and chemical vapour, bolted to machinery that runs continuously in a mine, a machine shop, a transmission housing or…

PCB Network Analyzer Calibration: Trusting the Measurement Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains PCB…

PCB Plating Thickness: Copper, Nickel and Gold Explained The Numbers That Decide Whether a Board Lasts Plating thickness is one of the least visible specifications on a circuit board and one of the most consequential. A copper layer a few micrometres too thin raises the resistance of every via on…

PCB Ionic Test Solvent Extraction: Washing the Board to Measure It Buyers and engineers often focus on the finished product and forget the production line behind it. In practice, most field failures can be traced back to process decisions made during assembly. Understanding PCB ionic test solvent extraction gives you…

Rigid-Flex Stiffener PCB: Materials, Cost and Design Rules Making One Part of a Flexible Circuit Rigid A flexible circuit is valued for being able to bend, but there are places on almost every flex design where bending is the last thing you want. A connector has to sit flat and…

PCB Low Standoff Cleaning: Reaching Under the Parts Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years. This article explains…

Flexible PCB Coverlay: Material, Thickness and Openings The Layer Nobody Discusses Until It Fails When a flexible circuit is designed, attention goes to the base film, the copper weight and the bend radius. The coverlay, the protective layer laminated over the finished conductors, is usually specified last and discussed least.…

8 Layer PCB Price: What Drives the Cost and How to Cut It The Workhorse of Dense Designs Eight layers is the point at which a board stops being a simple multilayer stack and becomes a routing platform. With four copper layers there is usually enough freedom to route the…

Button PCB: Tactile, Membrane and Capacitive Design A Board That Is Also a User Interface Most circuit boards carry components and route signals. A button board does that and something more: it is the physical interface between a person and a product. The switch, the dome, the touch pad or…

Headphone PCB: Design Inside Wired and True Wireless Earbuds The Board Is the Product A modern headset looks like an acoustic device, but most of what distinguishes one from another is electronics. Audio decoding, wireless connectivity, battery management, touch control and noise cancellation all sit on a small circuit board…