South Bay Circuits, Inc. Specializes In Quality Turnkey Electronic Manufacturing Services, PCB Fabrication, Circuit Board Assembly (PCBA) and PC Board Design & Layout.

From Quick Turn PCB Fab’s – PCB Prototyping and Assembly to volume PCB Fabrication – Assembly South Bay Circuits meets the ever demanding requirements of today’s Printed Circuit Board & PC Board Assembly – Electronics Marketplace.

South Bay Circuits (SBC) established in 1981 is a industry leader in Electronic Manufacturing Services “Single Source Solutions”.  We offer a full spectrum of Integrated Printed Circuit Board Services within our 60,000 square foot facilities and with domestic and offshore partners. We are a “World Leader” in getting our customers to the Marketplace First and supporting PCB – PCBA – CCA – Electronic Box Builds Manufacturing requirements at best in market pricing.

Whether your time critical requirements include engineering design, layout & prototyping, production builds, or complete fulfillment solutions our PC Board Manufacturing experts are totally committed to making your programs an outstanding success.

Our ability to team with “Customer Partners” is unique. We work closely with our Customers to improve PC Board Designs, turn PCB prototypes quickly, and develop PC Board Manufacturing/Assembly and test methods that reduce cost, shorten lead times, and enhance quality and reliability.

With SBC’s diverse capabilities and flexibility to service our “Customer Partners” we take great pride in being able to meet the demands of all or any portions of your requirements.  Whether it be for: PC Board Design, PC Board Layout, PC Board Manufacturing, PC Board Assembly, or Electronic Box Build from Prototyping to Production. We are here to make you a success!

Our Products and Services

  • PC Board Design
  • Quick Turn PCB Prototypes
  • PC Board Layout Services
  • PC Board Manufacturing
  • PC Board Assembly – Circuit Card Assembly
  • Backplane Assembly
  • PCB Testing & Final Assembly
  • Fully Integrated Turnkey Electronic Box Builds
  • Domestic Production and Offshore Volume Production


  • Medical
  • Industrial
  • Power Conversion
  • Instrumentation
  • Automotive
  • Semiconductors
  • Telecommunications
  • Computer Storage
  • Contract Manufacturers
  • Aerospace/Defense
  • Consumer Electronics
  • And more…

PC Board Design/Layout

  SBC has the capability on a “quick turn”  or “standard basis”, with turn times down to 24 hours, to layout a wide variety of technologies including…

PC Board Manufacturing

  SBC is the Industry Leader in offering PC Board Fabrication “On Time – All the Time”. SBC supports customer PC Board Fab quick turn…

PC Board Assembly

  SBC offers a wide variety of assemblies supporting customers from Proto type design stages through…


  It is the policy of South Bay Circuits, Inc. to provide quality products and services, which aim to consistently meet…

PCB Offshore

  SBC has developed a comprehensive process that thoroughly and completely analyzes a customer’s overall Printed Circuit Board (PCB) requirements…

PCB & PCBA Library

  SBC Library is a tremendous tool for Engineers, Purchasing Agents, or anyone needing basic to complex information about PC Board Layout…


SBC is an ISO 9001:2015 certified company through UL-DQS. South Bay Circuits utilizes ISO 9001:2015 eight fundamental quality management principles to help improve our PC Board Fab, PC Assembly, and Box Build performance. Certificate #: 10000903 QM15


ITAR Registered! We are a manufacturer that builds defense articles with related technical data that can be defined on the United States Munitions List (Part 121 of the ITAR), where we are registered.