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The miniaturisation of electronics products is driving advances in technology – especially in the printed circuit boards manufacturing sector. A modern trend, miniaturisation refers to the process of designing more compact and portable electronic devices.
Smaller printed circuit boards are required to meet the technical needs of these compact new devices. As the demand for smaller electronic devices increases, this creates a whole new challenge for electrical engineers, who are tasked with PCB miniaturisation.
Why is miniaturisation happening?
The miniaturisation of electronics products is the result of several factors. There is a higher consumer demand for increased functionality in smaller packages.
People are also looking for more portable devices and energy-efficient solutions. Miniaturisation makes it possible to pack additional functionality into more compact devices that are user-friendly and convenient.
Although it’s good news for consumers, designing and manufacturing smaller circuit board components is an ongoing challenge for engineers as devices get smaller. They must consider society’s changing technical needs when creating a miniature PCB, so it offers maximum functionality.
Which industries and applications require miniaturisation?
There is an increasing demand for lightweight, small, yet highly reliable equipment in many industries. In particular, the aerospace, healthcare and energy sectors have a growing need for miniaturised PCB assembly.
Using flexible, lightweight, small components can impact multiple different projects across several industries. Medical devices particularly increasingly rely on more compact PCBs.
Wireless communications, smart technology and consumer electronics need compact circuit boards as devices get smaller.
The oil, gas, alternative and green energy industries also require miniaturisation, as do the military and defence, automotive and transportation sectors.
Technical considerations
Numerous technical need to be considered when designing and manufacturing miniature PCBs including component size, PCB design and layout, and the power requirements, depending on the application.
By addressing these needs, PCB manufacturers can design smaller printed circuit boards that are efficient and reliable. This enables the development of increasingly advanced, smaller electronic devices to suit the demands of consumers and organisations.
Optimising the manufacturing process is crucial when designing miniaturised PCBs, as the tighter spaces require even more precise processes to ensure the boards are reliable and that they perform well.
Component size
The size of the components is the first consideration. Every component must be smaller and more compact, while still producing the same highly efficient performance that customers require.
The miniature components are more challenging to handle and must be placed with extreme precision on the PCB. Every component’s placement and orientation must be incredibly accurate to ensure no interference with other components.
There has been a significant reduction in the size of surface mount technology components in recent years. Thanks to advances in technology and manufacturing processes, our expert team at Sellectronics can place 01005 components (currently the smallest size in existence) onto our PCBs.
Power requirements
The power requirement of the device is another technical need to consider when designing miniaturised PCBs. Smaller devices usually need only low power consumption to function. The PCB must be designed to match the device’s specific needs.
As well as considering the components’ power requirements, electrical engineers must also take into account the PCB’s power delivery network and the heat generated during operation. Optimising the power delivery network can help to minimise power loss and improve device efficiency.
PCB design and layout
The circuit board’s design and layout are crucial to the functionality of miniaturised PCBs. With limited space, the layout must be optimised. The challenge for electrical engineers is ensuring the PCB is efficient and fully functional, despite its tiny size.
The layout must be optimised for signal integrity, minimising the noise of the board’s operation and the impact of electromagnetic interference (EMI).
In addition, the PCB layer count for more complicated applications creates another challenge. Miniaturising requires the precise alignment of multiple layers to prevent electrical and mechanical failure caused by misalignment.
It creates unique challenges in terms of accuracy and turnaround time. As the components become smaller and are fitted more closely together on the PCBs, the chances of thermal issues such as overheating increase, hence the need for absolute precision.
Miniaturisation is rarely simple, but PCB assembly experts have qualified engineers on the team and effective processes in place to overcome the challenges.