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Double-sided PCB

What is Double Sided PCB

A double-sided PCB has copper layers on both sides, unlike a single-sided board with only one. This allows more complex circuits, as components and traces can be placed on both surfaces. Vias (plated holes) connect the two sides, improving wiring flexibility and component density.

These PCBs are widely used in electronics, such as communication devices and computers, due to their higher circuit capacity. The manufacturing process includes extra steps like copper plating to ensure reliable connections between both sides.

Double-sided boards are cost-effective for mid-complexity designs, offering better performance than single-sided PCBs while avoiding the higher cost of multilayer boards. Their versatility makes them essential in modern electronics.

Capabilities in Manufacturing Double Sided PCB

Victory PCB is a professional pcb manufacturer that can produce high-quality double sided PCB products. Check our PCB manufacturing capabilities in the following table:
CircuitBase Copper Thickness (OZ)1/3 OZH OZ1 OZ1.5-2 OZ3 OZ4 OZ5 OZ6 OZ
Inner LayerMinimum Trace Width   (mm)/0.100.1250.200.250.300.350.40
Minimum Trace Spacing (mm)/0.100.1250.150.250.300.350.40
Outer   LayerMinimum Trace Width   (mm)0.0750.100.1250.200.250.300.350.40
Minimum Trace Spacing (mm)0.0750.100.1250.150.250.300.350.40
Solder MaskMinimum Solder Mask Opening(single side)(mm)0.050.050.050.050.0250.000.000.00
Minimum Solder Mask Bridge (mm)0.0750.090.090.100.1250.150.1750.20

Benefits of Double Sided PCB Boards

Double-Sided PCBs have two-sided traces, which provide many benefits for various applications. Here are a few advantages of using double-sided PCBs:

  • Relatively lower costs: Double-sided PCBs offer significant cost savings compared to multilayer boards while providing higher component density than single-sided ones. By utilizing both sides for components and routing, they reduce the overall board size, lowering material and production costs.

  • Improve EMI/EMC performance: Using Double-sided PCBs can improve EMI/EMC performance. Their dual copper layers enable one side to serve as a dedicated ground or power plane, dramatically improving EMI/EMC performance. This shielding capability is unavailable in single-sided designs and helps meet stricter electromagnetic compliance requirements.

  • More flexibility and reliability: Double-sided PCB comes with both the top layer and bottom layer, so you can use the bottom layer as a ground copper pour, which provides more flexibility. The reliability is very high because the holes are chemically cleaned and activated to ensure good plating and connection between the top and bottom layers.

  • Numerous applications: Double-sided PCBs have the circuit complexity to be used in many common electronics at a reasonable price. Use double-sided PCBs to create popular electronics for everyday use.

  • Suitable for sinking and sourcing current: You can use the bottom layer of a double-sided PCB as a ground copper pour for sinking and sourcing currents. Redirect your PCB’s current while leaving the top layer free.

Double-Sided PCB Design

Many elements of double-sided Printed Circuit Board designs are similar to single-sided PCB or multilayer PCB designs. To get started creating a double-sided PCB, you’ll need to create an electronics schematic for your board using a high-quality schematic editor. This shows designers exactly how elements in your circuits link together into a full device. You’ll need to specify ground plane and power connections directly on your board rather than incorporating power and ground planes that would appear in multilayer boards.

Getting started with your actual Printed Circuit Board requires capturing your schematic as a layout. You’ll need to start arranging your components in a way that satisfies your design rules, routing constraints, and mechanical constraints imposed by your packaging.

Applications Of Double Sided PCBs

Double-sided PCB has circuit complexity and can be used in a wide range of applications. If you use single-sided PCB or multiplayer PCB, it will fail to meet the project's requirements. Applications of double-sided PCBs include (part of applications, not all):

  • Power conversion

  • Converters

  • UPS power system

  • Automotive dashboards

  • Test Equipment

  • Control relays

  • Hard Drives

  • Power Monitoring

  • Amplifiers

  • Vending machines

  • Traffic systems

  • Car dashboards

Double Sided PCB FAQs

  • 1. What is the difference between single and double sided PCB?

    Single-sided layer boards have just one layer of base materials, known as a substrate. A double-sided PCB has more than a single layer board but fewer than a multi-layer.

  • 2. Where are double sided PCBs used?

    The following are applications in which Double Sided PCBs can be used including industrial controls, power supplies, converters, instrumentation, UPS systems and power conversion.

  • 3. How thick is a 2 layer PCB?

    2 layer PCB thickness standard thickness is 1.6mm. Learn the ultimate guide to 2 layer PCB.

  • 4. How does double-sided PCB work?

    These PCBs contain a single layer of base substrate with conductive layers on both sides. On both sides of the board, a solder mask is put. Circuits on one side of the PCB can connect to circuits on the other side to conductive holes in the board. Both sides of electronic components are soldered.

  • 5. What is the soldering process in double-sided PCB?

    Soldering two-layer boards is a time-consuming operation. However, you can use a pick and place machine to solder your board faster than soldering by hand. Moreover, you can also do using CNC Milling Machine.

  • 6. Why use double sided PCB?

    The advantages of using double-sided PCBs in your upcoming project include: More space for components: By having conductive layers on both sides, a double-sided PCB has twice the room for components as a single-sided PCB. Increase circuit density and complexity with ease.

  • 7. What is double sided PCB vs multilayer PCB?

    Multilayer PCBs are printed circuits made up of more than two layers. They must therefore have at least three layers of conductive material within the insulating material. On the other hand, double-sided PCBs only have two layers of conductive material, the top and the bottom.

  • 8. What is 2 layer and 4 layer PCB?

    2 layers PCB has two sided traces with a top and bottom layer, while 4 layers PCB has 4 layers. If you have a better understanding of two types of PCB boards, you will find that there are many differences in how they are constructed and how to work. Learn more about the differences between 2 layer PCB and 4 layer PCB.

Get custom double sided printed circuit boards that authenticates your business products and makes it an element for quick turnaround at a first go! At VictoryPCB, we work with each customer to ensure they get the boards they need, the way they need them. Contact us today for a quote for your specifications.



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