Multilayer PCB Prototype Fabrication: 2 to 48 Layers A multilayer PCB prototype order is a specification before it is a product. Layer count, panel size, drill diameter, copper weight, impedance tolerance and surface finish all have to be stated before the first panel is built, and each of them changes…

IPC Standards for PCB: A Complete Guide IPC standards are the reason a board designed in one country can be fabricated in another and assembled in a third without the parties arguing about what the words mean. They define the requirements for design, for materials, for fabrication and for acceptance,…

PCB Contamination Control: Why Fingerprints Matter A fingerprint looks harmless. On a printed circuit board it is a deposit of skin oils, salts, and fatty acids, and in a fabrication line it is a defect source that shows up several process steps later as oxidation, poor adhesion, or a plating…

PCB Electromigration in A Fine Pitch: Metal That Walks 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…

PCB Conformal Coating on A Connector: Coating Where It Belongs Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB conformal coating on a connector from the perspective of…

78-Layer Orthogonal Backplane PCB: Design and Manufacturing A backplane has always been the largest and most demanding board in a system, and the move to 112G and 224G PAM4 signalling has pushed it into a class of its own. An orthogonal backplane carries the line cards and the switch fabric…

Bluetooth PCB Design: 2.4 GHz Layout and Antenna Matching Bluetooth is a short range link running in a crowded band, and it is usually added to a product that is already small, already powered from a battery and already full of other circuitry. A Bluetooth PCB therefore has to solve…

PCB HALT Testing: Finding the Weak Link Fast 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 HALT testing gives you a practical advantage when you…

AS9100 Aerospace PCB: Requirements and Manufacturing In an aircraft or a satellite, a failed board cannot be replaced at a service counter. That single fact drives everything about how an aerospace PCB is specified, manufactured and documented, and it is the reason the industry built a quality standard around the…

PCB Corrosion Under A Coating: Hidden Until It Breaks 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…