Hard Disk PCB: Controller, Motor Drive and Signal Paths A hard disk PCB is the board mounted on the outside of the drive, and it does everything except store the data. It converts the host interface into the signals the drive needs, drives the spindle motor, manages power, and processes…

Flexible PCB Material: Types, Properties and Selection Flexible circuits are built from a small number of materials, and almost every decision in a flex design comes down to choosing between them. The substrate determines how hot the circuit can get and how many times it can bend, the copper determines…

Copper Core PCB: A Complete Guide to Its Design A copper core board replaces the usual glass-reinforced dielectric with a metal plate, usually aluminium or copper, separated from the copper circuit by a thin insulating layer. The circuit is unchanged in function; what changes is that the heat generated by…

18 Layer PCB: Stackup, Lamination and Design Rules An eighteen layer board is not simply a bigger version of a six layer board. The layer count changes the fabrication process, the tooling, the achievable yield and the way the stackup is planned, and it introduces failure mechanisms that only appear…

Automotive PCB Design for EV, ADAS and Powertrain A modern vehicle is a collection of electronic systems with wheels attached, and automotive PCB design carries the discipline that goes with it. Boards must work from minus forty to well above a hundred degrees Celsius, survive vibration and contamination, and continue…

Castellated PCB: Half Holes for Module Assembly Castellated holes are half holes cut through the edge of a board so that the module can be soldered flat onto a carrier like any other surface mount component. They are the reason a small power module or a radio module can be…

PCB Silkscreen Design: Text Size and Printing Methods The silkscreen is the part of a PCB that people actually read. It carries reference designators, polarity marks, pin-one indicators, connector labels, and revision information, printed directly onto the solder mask. A clean PCB silkscreen shortens assembly time, reduces rework, and makes…

Robot Vision System PCB: Design and Function Guide Machine vision looks simple from the outside: a camera sees a part, software decides what it is, the robot moves. Inside the camera and on the board behind it, a large amount of data moves very quickly, and the design decisions that…

PCB Drilling: Hole Types, Tolerances, and Cost Drivers Every plated hole in a circuit board begins as a drilled hole. PCB drilling is the step that turns a laminated panel into something that can carry a signal from layer to layer, and the quality of those holes decides whether plating…

Industrial Robot PCB: Design for Motion Control An industrial robot controller is a board that has to survive its own electrical environment. Motor drives switch hundreds of volts in microseconds, the sensors are wired over cables that run the length of a factory floor, and the installation is fed from…