The world of PCB is constantly evolving, allowing electronics to become more smart and sophisticated. Not only that, the electronic devices, despite being fragile, are durable if we talk about their electronic boards. Well, that is all because of the single-sided rigid PCBs.
In this blog, we will take you on a tour of single-layer rigid PCBs where we will talk about what these are, why they are used, pros and cons, and extra tips related to rigid PCBs. Let's move forward and discuss all of this in detail.
What are Single-sided Rigid PCBs?
Single-sided rigid PCBs are electronic boards that are made up of rigid materials such as fiberglass along with a combination of epoxy layers. The PCBs are durable and the rigidness allows unnecessary bending.
Apart from the construction, this PCB type contains traces on either the front or back of the board. And, the components are placed on either side. The PCB also contains a solder layer and silkscreen on the selected side.
Stack-Up Structure of Single-layer Rigid PCBs
Rigid PCBs consist of several key layers that enable their functionality. The substrate layer, made from materials like FR2, FR3, and FR4, provides mechanical support and insulation. On top of this is the conductive layer, typically made of copper, which creates traces for interconnectivity among components. The solder mask layer protects the circuit by preventing short circuits, while the silkscreen layer helps assemblers identify components through logos, marks, and identification codes.
Single-side Rigid PCB vs Other Rigid PCBs
|
Feature |
Single-layer Rigid PCB |
Double-layer Rigid PCB |
Multi-layer Rigid PCB |
|---|---|---|---|
|
Copper Layers |
One |
Two |
Three or more |
|
Cost |
Low |
Moderate |
High |
|
Complexity |
Simple |
Moderate |
Complex |
|
Signal Routing |
Limited |
Moderate |
Advanced |
|
Applications |
Basic electronics, toys, calculators |
Consumer electronics, power supplies |
High-tech devices, aerospace, telecommunications |
|
Durability |
Moderate |
High |
Very High |
|
Weight |
Moderate |
Moderate |
Higher |
|
Size |
Larger, limited in complexity |
More compact, but more complex |
Very compact, high density |
|
Manufacturing |
Simple & Cost-effective |
More complex, but still manageable |
Complex & Expensive |
|
Performance |
Suitable for low-performance apps |
Better for medium-performance apps |
High-performance applications |
Benefits of Single-layer Rigid PCBs
- Cost: Since these single-sided rigid PCBs contain a single layer and have components placed on it, it leads to relatively lower production costs compared to double-layer and multi-layer PCBs.
- Repairable: Single-layer rigid PCBs are easily repairable because faults can be traced using X-ray machines. If the machines detect any PCB faults, it can be repaired without any hassle.
- Efficient: Single-side rigid PCBs take the lead because they have fewer faults, have exceptional performance, and ensure that the board is long-lasting.
- Durable: Single-sided rigid PCBs are durable, making it perfect for applications where tensile strength and durability are important. Moreover, the rigid nature also allows the PCB to be mounted in any direction or orientation.
Limitations of Single-sided Rigid PCB
Single-sided rigid PCBs are limited in terms of weight, size, and design complexity. Their bigger size and heavier construction, as a result of the use of fiber and epoxy materials, render them unsuitable for applications with space or weight constraints. Furthermore, the design constraints of having traces and components on only one side limit their ability to efficiently accommodate complicated layouts or high-frequency applications.
Applications of Single-layer Rigid PCB
Single-sided rigid PCBs have gained a lot of attention in the industry due to a number of reasons, such as costs, design, usage, and durability. The PCB allows maximum performance without integrating complex designs, making them suitable for many industries.
Due to many benefits, these PCB boards are common among industries that include
Manufacturing Process of Single-Sided Rigid PCBs
The manufacturing process of single-sided rigid PCBs involves several key steps. It begins with the creation of a design layout using PCB design software, followed by the selection of a substrate material, typically FR-4. A copper foil is then laminated onto the substrate, and a photoresist layer is applied. The design is transferred to the photoresist using UV light, which hardens the exposed areas while the unexposed sections are washed away. The board is then etched to remove excess copper, leaving the desired circuitry.
After etching, holes are drilled for component leads, and various surface finishes are applied to enhance solderability and protect against oxidation. The final steps include electrical testing to ensure functionality, followed by the assembly of components through soldering. This straightforward process allows for the efficient production of reliable single-sided rigid PCBs used in a wide range of applications.
Related Article: How Does the PCB Manufacturing Process Work ?
Choose a Reliable Single-sided Rigid PCB Manufacturer - FC
FC is a Chinese PCB manufacturer with more than 20 years history in the PCB industry. We provide integrated PCB manufacturing and PCB assembly electronics manufacturing services. Our PCBs are used in a variety of industries such as consumer electronics (mouse PCB, keyboard PCB), fire protection (fire alarm, smoke detector), automotive, and aerospace (various control systems). We not only provide high-quality multi-layer circuit board, but also single-layer circuit board quality in the industry is unparalleled, and will be the most affordable price to meet your needs.
Conclusion
The world is moving towards modernized solutions where multi-layer PCBs are becoming the new norm. However, its predecessor-single-sided rigid PCB has still maintained the position of the top choice for many electronics. Due to simple design, cost, efficiency, and durability, these PCBs are preferred.
We have created this guide to help you understand what single-layer rigid PCBs are and their importance in the industry. If you have more information or have a design that you want to fabricate, feel free to contact FCPCBA.
