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Single Layer PCB

What is Single Layer PCB?

Single Layer PCB, also called 1 layer PCB, is such type of a PCB which comes with only one layer of conducting material on one side of the board and other side is used for incorporating different electronic components on the board.

A Single Layer PCB is the simplest PCB as there is only one conductive layer. Single layer PCBs are typically used for simple devices and are a bit less expensive for PCB assembly services to produce. Among all types of PCBs, single-layer PCBs are the first choice and the most purchased. When the circuit is very complex and cannot be implemented on a single layer circuit, the designer will choose a double layer or multilayer PCB. Otherwise, single sided PCB is the first choice for any equipment, product or project.

Types of Single Layer PCB

Single Layer Rigid PCB

It is the type of a single layered PCB that is made up a rigid material such as fiberglass. These PCBs are inflexible and prevent the circuit from bending and breaking. Currently, these are used in different types of devices, such as in calculators and power supplies, etc.

Single Layer High Frequency PCB

It’s the type of single layer PCBs which is used in high frequency PCB generally in giga hertz. The boards are made up of a Teflon or polyphenylene oxide (PPO) material. There are some tips you need to know when choosing high frequency single layer PCBs, such as thermal expansion, dielectric loss as well as water absorption and so on.

Single Layer Aluminum PCB

It’s the type of single layer PCB which is consist of aluminum material substrate. The design of the boards are quite similar to copper backed PCB, however there is a difference, which it uses the aluminum PCBs substrate instead of copper. Because aluminum backed is used with thermal insulating material for transferring the heat from insulating material to back.

Single Layer Flexible PCB

It is the type of a single layer PCBs which is used for high-frequency circuits, usually in gigahertz. These PCBs are made out a Teflon or polyphenylene oxide (PPO) material. During choosing high-frequency single sided PCB, many aspects are kept in mind, such as dielectric loss, thermal expansion, and water absorption, etc.

Single Layer Rigid Flex PCB

It is made up of a flexible material instead of a rigid material. What’s more, they use the plastic materials. And single layer flexible PCBs have many advantages over single layer rigid PCBs but they have a high cost for fabrication.

Advantages and disadvantages of Single Sided PCB

Advantages of Single-Sided PCB

  • Lower cost: Because single-layer PCBs are simpler than double-sided PCB and multi layer PCB, low cost especially for high volume orders

  • Simpler Design and Production: Single-sided boards are relatively simple and are also very common, which means most designers can easily design them, and lower probability of manufacturing issues for most manufacturers.

  • High Volume: Because higher amounts will lower the price per board even more, bulk ordering is one of the best ways to get the most value out of single-sided PCBs.

  • Popular, common, and easily understood by most PCB manufacturers

Disadvantages of Single-Sided PCB

  • The simple and easily manufacturing design of a single layer PCB make effective for users but it also has some limitations.

  • Some Circuits where large numbers of components need to be assembled, they need a large space and more connection points that are lacked by the board.

  • The minimum number of components joining joints also disturb its speed and power. Due to its less operating speed a single layer board is not favourable for such applications where a large number of connections are needed.

Single Layer PCB Stack up

Stacking in a single-layer PCB is very simple. There are only two main layers, but if we calculate the total number of layers, including solder mask, surface treatment and silk screen, there will be more layers in total. However, there are only two important layers: the conductive layer and the base layer.

Conductive layer

The conductive layer conducts signals and transmits electrons. There is only one conductive layer in a single-layer PCB, which is usually made of copper. Other materials, such as gold and silver, can also be used as the conductive layer, but copper is the most cost-effective and feasible.

Base Layer

The base layer of the PCB may be different. The commonly used base layer is FR-4; however, metal is also used as the base material. The base layer provides the platform or foundation for all other layers. This is the base layer where the copper layer, silk screen and other layers are applied. PCBs can be further classified according to the base layer.

Applications of single layer PCB

Single layer PCBs are widely used in a lot of various electronic applications ranging from simple to intermediate to complex circuits.  There are some applications they can be used for as follows.

  • Power supplies

  • Packaging equipment

  • Camera systems

  • Solid state drives

  • Radio and stereo equipment

  • Sensor products

  • Timing circuits

  • Photo copy and printer machines circuits

How Single Side PCB is Manufactured

The manufacturing of a PCB is a long process. The PCB that looks like a simple board goes through more than a dozen machines to create a final product. For the ease of customers, PCB manufacturers define the process in simple words.

Single-sided PCB Manufacturing Process Flow Chart

Cutting – Cleaning – Drilling – Cleaning – PTH – Panel – Plating – Cleaning – Photolithography – Image Transfer – Inspection – Copper/Tin – Plating – Coating – Removing/Etching/Tin – Removing – Inspection – Cleaning – Solder – Mask – Exposure/Develop/Inspection – Prepreg – Screen – HASL – Conformal – Coating – Post – Soldering – Cleaning – Test – Final Inspection – Packing

Best Single Layered PCB Manufacturer

As a professional pcb manufacturer, VictoryPCB provides customers with high-quality, inexpensive, high-quality fast PCB prototypes for printed circuit boards worldwide. We can produce any single-layer PCB including rigid pcb, metal core pcb, flexible pcb, heavy copper pcb and etc. For more information and details, feel free to contact our 24/7 customer support team.


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