Automotive LED Headlight PCB Manufacturing Why the Board Is Part of the Optics An LED headlight is a thermal design that happens to emit light. The diode itself is efficient, but the light output and the colour both shift as the junction temperature rises, and the lifetime falls quickly if…

Smart Door Lock PCB Assembly: Design and Power Notes What the Board Has to Do A smart door lock runs on batteries, opens a motorised bolt, reads a fingerprint or a keypad, talks to a phone over Bluetooth or to a hub over Zigbee, and is expected to keep working…

Network Interface PCB Design for High-Speed Links What a Network Interface Board Carries A network interface board connects a device to a network. It holds the controller or the switch silicon, the physical layer device, the magnetics and protection that separate the cable from the electronics, the connector, and often…

Medical Grade PCB for Sterilization Equipment The Equipment and What It Does to a Board Sterilisation equipment exists in several forms, and each one attacks electronics differently. Steam autoclaves run saturated steam at 120 to 135 degrees Celsius and then cool, so the board sees repeated temperature cycles with condensation…

Ultrasonic Sensor Module PCB Design Why the Board Decides the Accuracy An ultrasonic ranging module transmits a burst of sound, waits for the echo, and converts the round-trip time into a distance. The transducer gets the attention, but the measurement is won or lost on the board. The transmitter must…

Wire Bonder Control Board: Design and Manufacturing The Board That Decides Bond Quality A wire bonder places a wire a few tens of microns across onto a pad, forms a bond with force and ultrasonic energy, and does it again several times a second for hours. The control board is…

Flight Data Recorder PCB Assembly What the Board Inside a Recorder Does A flight data recorder is built to keep recording when everything around it has failed, and the board inside is designed to the same expectation. It collects data from the aircraft’s buses and sensors, conditions and filters it,…

CVD Driver Board PCB and PCBA Requirements The Board at the Centre of a CVD Tool Chemical vapour deposition builds thin films by reacting gases at the wafer surface under controlled temperature, pressure, and, in plasma-enhanced systems, radio-frequency excitation. The driver board is what holds those conditions steady: it powers…

8-Layer PCB Prototyping: Stackup and Lead Time When Four and Six Layers Stop Working Most designs begin on four layers and move up when the layout stops closing. The move to eight is usually triggered by a specific requirement rather than by component count: a differential pair that needs a…

High Voltage PCB Design and Manufacturing What Makes a Board High Voltage Boards above roughly one thousand volts are usually treated as high voltage, and the design problem changes completely at that threshold. Below it, the board is a signal carrier and the dielectric is there to separate conductors. Above…