Aluminium Nitride Ceramic Substrates: A Technical Guide Why Aluminium Nitride Exists Three requirements pull a design away from ordinary substrates: the heat flux is high, the voltage is high, and the device is silicon carbide or gallium nitride with a coefficient of thermal expansion that does not match a laminate.…

Direct Bonded Copper PCB: Ceramic Substrates for Power When FR-4 Runs Out of Thermal Headroom A high power module asks a board to do three things at once: carry a large current, hold off a high voltage, and move heat out of the switching devices. FR-4 can do the first…

Standard PCB Service Pricing: Material, Layers, Volume What Makes a Service Standard A standard board service is a manufacturing offer built around the common case: standard FR-4, one ounce of copper, two, four or six layers, ordinary tolerances, a normal finish and a quoted lead time of one to two…

18 Layer PCB Boards: Stackup, Process and Cost Where the Layer Count Comes From Nobody starts a design intending to use eighteen layers. The number appears when a set of requirements cannot be satisfied any other way: a backplane with dozens of high speed serial links, a server or switch…

China vs Overseas PCB Manufacturing: Cost and Speed The Question Behind the Question Asking whether to build in China or overseas is usually a proxy for a different question: what do I actually need from this supplier? A startup that needs fifty prototype boards next week, a medical OEM that…

Copper Clad PCB Guide: Foil Weight, Specs and Price The Copper Is the Circuit Every board starts as an insulating base with copper foil bonded to one or both sides. That copper becomes the conductors, and the thickness of it determines how much current the design can carry, how much…

Blind Via PCB Manufacturing: Structure, Process and Cost A Connection That Stops Halfway A blind via starts at the surface of the board and terminates at an inner layer without passing through the whole stack. It looks like an ordinary via from the outside, but underneath it the laminate is…

Space Grade PCB Manufacturing: Materials and Testing Zero Tolerance, Small Quantity A satellite in low earth orbit, a deep space probe, a launch vehicle flight computer and a space station power module share a set of conditions that no commercial product faces: vacuum, ionising radiation, thermal cycling across a wide…

Radar PCB Assembly: RF Placement, Materials and Cost Where Three Difficult Requirements Meet A radar board sits at the intersection of high frequency design, precision signal processing and strict reliability. Whether it is a surveillance system, an automotive ADAS module, a spaceborne platform or an industrial level sensor, the assembly…

Satellite Communication PCB Assembly Cost Breakdown Once It Is Up There, Nobody Can Service It A satellite communication board has to work in vacuum, under radiation, through thermal cycles that would destroy a consumer product, and with no possibility of replacement after launch. That changes the way its assembly cost…