Electronic products often require several stages of manufacturing before they are ready for use. Two common services are printed circuit board assembly and box build assembly. While both involve electronic components and can be part of the same manufacturing process, they serve different purposes.
PCB assembly focuses on building a functional circuit board by placing and soldering electronic components onto a bare PCB. Box build assembly takes that process further by integrating a PCB assembly with other electrical, mechanical, and structural components to create a complete product or subassembly. Understanding the difference can help OEMs choose the right manufacturing solution for their needs.

PCB Assembly
PCB assembly is the process of populating a bare printed circuit board with the components required for it to operate. Components can include resistors, capacitors, integrated circuits, connectors, and other electronic devices.
Professional PCB assembly services may use surface-mount technology (SMT), through-hole assembly, or a combination of both, depending on the design. Automated equipment places components onto the board, followed by soldering and inspection to ensure the assembly meets the required specifications.
Testing and inspection are also important parts of PCB assembly. Automated optical inspection, X-ray inspection, and other methods can help identify potential defects and verify that the finished assembly performs as expected.
The completed PCBA can then become part of a larger electronic system. For example, a circuit board may control a medical device, industrial control system, automotive component, or other electronic product. PCB assembly generally focuses on producing the functional electronic board itself rather than integrating it into a finished enclosure.

Box Build Assembly Services
Box build assembly services involve a broader level of product integration. Instead of producing only the circuit board, the manufacturer assembles multiple components into a finished enclosure or electronic system.
A box build may include a PCB assembly along with cable and wire harnesses, connectors, power supplies, mechanical hardware, displays, switches, and other components. The process can involve electrical wiring, mechanical assembly, system integration, inspection, and functional testing.
This makes box build assembly useful for OEMs that need a complete electronic product or subassembly rather than an individual PCBA. A box build assembly manufacturer can manage multiple assembly requirements within one production process, helping reduce the number of separate manufacturing steps an OEM must coordinate.
Box build projects can vary significantly in size and complexity. Some may involve a relatively simple enclosure with a PCB and wiring, while others may require the integration and testing of numerous electrical and mechanical components.
We Provide Both/Work with Us
PCB assembly and box build assembly are different services, but they often work together. A completed PCB assembly may be one of the key components inside a box build, making it useful to have a manufacturing partner capable of handling both stages.
Stracon, Inc. provides PCB assembly services and box build assembly services to help OEMs move from individual circuit boards to integrated electronic assemblies. Working with one manufacturing partner can simplify communication, production coordination, quality control, and supply-chain management.
Whether your project requires a finished PCBA or a fully integrated electronic assembly, Stracon can support your manufacturing requirements. Contact Stracon, Inc. to discuss your PCB assembly or box build assembly project.
FAQ
What types of PCB assemblies does Stracon support?
Stracon supports surface-mount, through-hole, and mixed-technology PCB assemblies, including assemblies using BGA, Micro-BGA, LGA, and fine-pitch devices. We also handle flexible and rigid-flex circuits.
Does Stracon offer PCB assembly for small- to medium-volume production?
Yes. Stracon specializes in supporting customers with small-to-medium production volumes, particularly projects requiring controlled processes and complex assemblies.
Can Stracon help with component supply for PCB assembly?
Yes. Stracon provides supply-chain support, including safety stock programs for components and recommendations for alternative components when a part may become obsolete or difficult to source.
What testing capabilities are available for PCB assemblies?
Stracon offers 3D automated optical inspection (AOI), X-ray examination, and testing. Its testing services can also use customer-provided test fixtures and written procedures.
Can Stracon provide both PCB assembly and box build solutions?
Yes. Stracon’s PCB assembly capabilities extend into complete box build solutions, allowing customers to use ours for both board-level assembly and broader electronic system integration.
