RF and Microwave PCB Manufacturers

Controlled impedance keeps signal transmission consistent across traces, preventing reflections, signal loss, and distortion at high frequencies. For RF and microwave applications, even small impedance mismatches can degrade performance, so tight tolerances during fabrication and material selection are critical to reliable signal integrity.

South Bay Circuits offers PCB fabrication in as little as 24 hours and same-day assembly for time-sensitive RF and microwave board programs, compared to the days or weeks typical of standard manufacturing. Standard turn times are also available for larger or more complex multilayer RF designs.

Defense and aerospace RF boards typically require ITAR registration, CMMC Level 1 cybersecurity compliance, IPC-6012 Class III military workmanship standards, and AS9100 aerospace quality certification. These ensure the manufacturing process meets strict traceability, reliability, and security requirements for sensitive applications.

Yes, RF and microwave boards can be assembled with fine-pitch Ball Grid Array (BGA) components alongside mixed surface mount and through-hole technologies. This requires precise solder mask registration, X-ray inspection, and automated optical inspection (AOI) to verify placement accuracy on dense, high-frequency layouts.

RF and microwave PCBs use specialized low-loss laminates, tighter trace/space tolerances, and controlled impedance routing to manage signal integrity at gigahertz frequencies, whereas standard PCBs on FR4 are optimized for lower-frequency digital and power applications. RF boards also often require blind/buried vias and HDI interconnects to minimize signal loss.

RF and microwave PCBs can be built from single-sided designs up to 22+ layer HDI constructions with blind vias, buried vias, and non-conductive via fill. Layer stack-up and via technology are selected based on frequency requirements, impedance targets, and the density of the RF circuit design.