March 22, 2017 by webadmin

Types Of Printed Circuit Board Part 2

In our previous blog post, we took a look at the first two types off Printed Circuit Board Assemblies (PCB Assemblies): single sided and double sided PCBs.

In this post, we’ll examine the other 3 types – with a focus on their unique design qualifications, the application of each type, and some benefits of each design.


Multi-layer PCB’s (Printed Circuit Board Assemblies)

These designs have added layers beyond the top and bottom layers of a double-sided PCB, thus enlarging the density and complexity of the design. The extra layers often include power planes. The power planes decrease the level of electromagnetic interference that is inherently emitted by these designs, while also providing the power supply to the circuit.


The benefits of multilayer PCBs include they can be made in smaller sizes (having a higher assembly design) while providing increased flexibility and a reduced need for interconnection wiring harnesses. Impedance features can be more easily incorporated into multi-layer designs as well.

Multi-layer PCBs are used in computers and file servers, cell phone transmission equipment, satellite systems, industrial controls, CATS scans, X-ray equipment, weather analysis equipment,  and fiber optic receptors.


Rigid PCB’s


PCB Assemblies also vary in their level of flexibility, with rigid PCB Assemblies having an inflexible design that commonly used.  These types of boards use a solid, rigid substrate material that keeps the board from bending and twisting.


Most PCB’s are of the rigid variety, with the most common example being the motherboard in a tower style computer.


Rigid PCB’s are typically used in applications that do not require the board to be bent or flexed.  This includes being used in computers, stereos and radios, transmission equipment, and in automotive and aerospace electronic applications.


Flexible PCB’s

In flexible PCBs, the base material is typically a type of plastic, which allows the board to be configured in different shapes.  The flexible PCBs provide a perfect solution for when reliable, repeatable and complex interconnections are needed between electrical boards.  The interconnections are printed rather than being made through discrete conductors, thereby reducing the level of complexity without compromising performance.


The benefits of a flexible PCBs includes lower board weight due to space saved, the ability to perform in severe environments, and ease of use in multiple applications.



We’d love to talk to you about which PCB Assembly would be best for you. Our design team will take the time to determine the best fit for your application. We may even be able to improve on a previous design. So give us a call and let’s talk about your PCB Assembly needs.



About the Company:


ADCO Circuits offers electronic design and PCB assembly services to aerospace/military, telecommunications, automotive, industrial/commercial, wireless and medical equipment markets. They provide electronic designing, contract manufacturing, and rapid prototyping and PCB assembly services in Michigan. They are an ISO 9001, TS 16949 and AS 9100 certified. Their personnel is trained to IPC J-STD-001 class 3 and IPC-A-610 class 3 qualifications. They also have the latest equipment and technology, and advanced information and quality systems to support all of their electronic manufacturing services.