Excello Circuits, Inc. is a PCB manufacturing company headquartered in Anaheim, California, specializing in the production of technologically complex printed circuit boards for demanding commercial and industrial applications. The company provides a one-stop PCB manufacturing solution covering product development, engineering support, prototype development, fabrication, and production manufacturing. Excello Circuits serves customers across aerospace, automotive, medical, industrial, oil and gas, networking and communications, and contract manufacturing markets. Its official website identifies the company as a U.S.-based PCB manufacturer focused on time-critical and technologically complex circuit board products.

Excello Circuits manufactures a broad range of PCB technologies, including rigid PCBs, rigid-flex PCBs, flexible PCBs, high-density interconnect (HDI) boards, metal-core PCBs, RF and microwave boards, and heavy-copper circuit boards. Its published capabilities cover designs from simple single-sided boards through complex multilayer and HDI products. The company states that it can manufacture complex boards up to 24 layers on its primary product information pages, while its industrial capability information lists layer counts extending to 32 layers for applicable applications.

The company also emphasizes prototype-to-production manufacturing and quick-turn PCB services. Its website promotes prototype turnaround beginning at 24 hours and states that there are no minimum order quantities, allowing it to support both prototype requirements and larger production programs. Excello Circuits maintains U.S.-based manufacturing operations in Anaheim, California.

Excello Circuits maintains several industry certifications and registrations relevant to specialized PCB manufacturing. Its current AS9100D certification with ISO 9001:2015 covers the manufacture of rigid, rigid/flex, and flex printed circuit boards at its Anaheim facility, with the certificate issued in March 2025 and listed as valid through March 21, 2028. The company also maintains ITAR registration, supporting its ability to handle controlled defense-related manufacturing requirements.