Although single-sided PCB technology has matured, it remains a popular choice for many applications due to its low cost. In fact, it is far from outdated because of its low design and manufacturing costs. This is because the material cost required for building PCBs is relatively low and involves fewer processes. If cost is the main consideration, PCB designers will choose to design on single-sided PCBs as much as possible.

Among the three types of PCBs, single-sided PCBs are the easiest to design, manufacture, and assemble. The additional layers mean that the circuit board must undergo more inner layer processing. Due to its lower complexity, it is expected that the first pass rate of single-sided PCBs will also be higher. There are fewer elements and processes that need to be controlled during the manufacturing process.

Due to the fewer steps involved in the basic single-sided PCB manufacturing process compared to other types of PCBs, PCBs can be delivered within two weeks. High speed machines can efficiently process circuit boards and are less prone to errors.

Single sided PCBs have a wide range of applications, including consumer electronics, automotive industry, industrial control systems, and power supplies. Due to its simplicity and cost-effectiveness, single-layer PCBs are suitable for less complex applications. Typical applications of single-sided PCB include:

The manufacturing process of single-sided PCB adopts highly automated "printing" and "etching" technologies. The following are the main steps for producing single-sided copper PCB boards:

Design is PCB manufacturing The schematic is generated using computer-aided design (CAD) programs. Arrange circuits and components in a schematic using a CAD program that includes tools and elements. Then, the schematic will be transformed into a layout that essentially displays the physical appearance of the printed circuit board.

Apply photoresist chemicals (a material sensitive to light or ultraviolet radiation) onto the substrate. A photomask is used to cover parts with copper patterns and expose unwanted copper to ultraviolet light. The exposed part will undergo chemical changes and eventually dissolve.

The uncovered copper is etched away, leaving only the copper required for the design. Etching solution is used to dissolve unwanted copper. Then rinse the circuit board with deionized water to remove chemical residues.

Use mechanical or laser drilling machines to drill holes on single-sided PCBs. Drills are coated with conductive metal to facilitate contact between components. Holes or through holes come in various sizes, types, and lengths.

Apply the solder mask layer onto a single-sided copper PCB board through screen printing technology. Solder mask epoxy resin is a thermosetting material that solidifies when heated. Another method is to apply photosensitive film material, then develop and cure it.

Hot air solder leveling is a traditional method for surface treatment of copper contact pads. Immerse the exposed single-sided PCB board into the solder bath so that the solder pads can be coated. Another method is to immerse gold through electroless nickel plating, which adopts the electroless nickel plating process and contains flash gold material.

The printing method of screen printing is almost the same as that of solder mask, which is to apply photosensitive liquid epoxy resin on a single-sided copper PCB and then expose it to ultraviolet light. Another technique is to directly print screen printing ink and then expose it to ultraviolet light for curing.

The exposed single-sided PCB board must undergo online testing or flying pin testing during the testing process. ICT is a more effective method as it involves a fixture with a nail bed or spring needle that contacts the test points to determine the electrical response of the circuit board. On the contrary, flying needle testing can flexibly move and access the testing network on the PCB.

If pursuing cost-effective FPC manufacturing services, choosing a Chinese manufacturer is the best choice. As a manufacturing powerhouse, China has abundant resources, cheap labor, and a large number of technical personnel. We recommend Haibo, a Chinese FPC assembly service provider with over 10 years of experience, who has performed outstandingly in various aspects

Efficient and reasonable quotation:There is an efficient quotation process to assist you in making decisions, providing reasonable prices and highly competitive quotes in China.
High quality and reliable products:Produce high standard printed circuit boards, manufacture and test according to specifications, international standards, and internal controls, and conduct pre production inspections to ensure robust processes.
Quick and on-time delivery:The assembly equipment is in good condition, with high productivity, minimal downtime, short delivery time, and also provides urgent services.
Timely and effective response:Always respond to customer needs, provide accurate information, answer questions through multiple channels, and offer one-stop services.
Strong technical strength:China's FPC manufacturing technology is leading, and Haibo has a complete SMT solution that covers assembly, inspection, and other capabilities. It also provides prototype production and customization services.