
Printed circuit board assemblies (PCBAs) are used in a variety of industrial and consumer electronics, ranging from military weaponry to remote controls. PCB Assemblies can be adapted to suit circuits of any complexity.
Though PCBAs are relatively commonplace, their complexity makes it critical to source new circuit board assemblies from reliable suppliers. PGF Technology Group provides comprehensive printed circuit board assembly manufacturing services, building to spec for diverse industries, from aerospace to medical to industrial equipment and more.
Surface-mount technology (SMT) involves direct mounting of components on top of of the PCB using solder paste. SMT PCB assembly is the current industry standard for almost all consumer electronics due to the demand for miniaturization and high power density. Offering high component density, automated production, and a lower cost for mass production, SMT has revolutionized electronics by allowing for smaller, lighter, and faster assemblies.
In through-hole technology (THT), components are inserted into pre-drilled holes on the PCB and soldered into place on the opposite side. It remains the classic PCB assembly method for certain applications. Ideal for industrial control switches and high-voltage power supplies, THT offers exceptional mechanical bond strength, ease of repair, and high-heat tolerance.
While SMT and THT have their own sets of ideal applications, sometimes mixed technology assembly is the best option. In this hybrid approach, both through-hole and surface-mount components are assembled onto the same PCBA. Mixed technology assembly is common in products that require both high-power handling and compact electronics.
Our PCBA manufacturing services involve putting together the substrate and electronic components.
This base material is typically made of fiberglass-reinforced epoxy resin (FR-4), with various layers on top:
A solder mask is a protective layer of material applied over the circuit board, serving to insulate and shield conductive traces and prevent solder bridges during the soldering process. The solder mask is responsible for a PCB’s characteristic green color.
The silkscreen is a screen-printed layer that provides assembly and reference information for the PCB. The silkscreen is usually white text on the green solder mask.
Copper layers refer to thin sheets of copper that are laminated onto the surface of the circuit board, forming conductive pathways for electrical signals and power distribution. Every PCB contains one or more copper layers, including the etched pathways (traces) that form the circuit.
Based on the needs of your application, these may include capacitors, resistors, and integrated circuits (ICs) soldered onto the substrate. Together, the components create a functional electronic module.
PGF Technology offers the following PCB assembly types:

The most straightforward and most affordable PCBs consist of one copper layer laminated to a non-conductive substrate layer. One side of the board contains all pathways.

A more versatile option, double-sided PCBs incorporate circuitry on both sides of the PCB. These boards have three total layers, consisting of two layers of copper on either side of a non-conductive substrate.

The most complex and expensive, multi-layer PCBs enable intricate circuitry that would be impossible to contain in one or two layers. These boards allow for maximum component density by moving some traces to the board’s interior, freeing room for additional SMT components on the exterior.
Using state-of-the-art machinery, PGF Technology Group can handle surface mount, through-hole, and mixed-technology assembly. We also offer integrated electromechanical assembly services for customers seeking larger sub-assemblies or complete products. Electromechanical assembly, also called box build assembly, combines a completed PCBA with corresponding electronic components and harnesses to yield a functional product.
When you choose PGF Technology, you’ll benefit from our end-to-end PCB assembly capabilities, which improve the overall quality of the PCBAs, shorten time to market, and reduce production costs.
Our advanced PCB assembly capabilities always adhere to the highest industry standards. Between receiving, assembly, testing, and shipping, our facility manages your project with attention and dedication.
Explore our PCB assembly methods below:

Automated assembly is ideal for components that are difficult to solder by hand and high-volume production runs. It is the fastest and most efficient means of producing consistent circuit boards.

Reflow soldering is the most common method used for efficiently soldering SMT-mounted components. The process uses a reflow oven to melt solder onto a pre-heated and pre-soaked PCB.

Wave soldering is another efficient method that involves applying flux to an entire PCB surface, heating the board, and then applying molten solder to the whole heated board. This process has been greatly dismissed due to the addition of selective soldering.

Selective solder is a more precise variation of wave soldering used to apply flux locally rather than the entire PCB. Instead of using a “wave” of molten solder, it uses nozzles to apply solder exactly where needed.

Hand insertion and soldering may be used when project constraints require manual through-mounting.

In-circuit testing (ICT) involves the use of a specialized test fixture that contains probes or pins. ICT verifies the integrity of individual components, checks for proper circuit connectivity, and detects potential defects such as short circuits, open circuits, or incorrect component values.

This automated inspection process uses cameras to scan the PCB for defects and quality issues.

The SPI process closely inspects solder paste deposition before part placement.
PCBAs find extensive applications in products such as smartphones, automotive control systems, communication devices, medical monitors, manufacturing machinery, and satellite systems, enabling efficient electronic functionality in diverse sectors.