Guide To Medical PCBA – Types, Applications, Tips For Designing

The sectors of medicine and healthcare are undergoing different enhancements served by technology. The designers and engineers are putting forward some beneficial technical ideas to improve the current state of the medical sector. There are now different brands that are manufacturing electric medical equipment to serve a little better to the patients and medical staff. 

In this case, the quality control matters a lot when it comes to the accurate working of medical gear. Among these medical devices, medical printed circuit boards are common. These are also crucial parts of several medical-oriented pieces of machinery and regular equipment. Especially diagnostic devices used in hospitals comprise these circuits for precision. There have been many reports that show these circuits are dominating the medical industry at a rapid pace due to their benefits. 

The tech-based features of these circuit boards make standard medical tools and devices more efficient and flawless in their performance. These are found in the devices like MRI machines, CT scan systems, ultrasonic equipment, and many more in different hospitals and clinics. 

Technologies and Types of Medical PCBA 

The circuits that are used in the medical industry need more precision during production. These are crucial parts of medical gear that detect different diseases and have the ability to save the precious lives of patients. 

Any negligence in the production of printed circuit boards can impact the collateral functioning of medical devices on the whole. All the necessary adjustments and alterations need to be executed carefully on these circuits. There are different types of assemblies common among the technicians, but HDI circuit boards are reliable on all counts. 

Below is the detail of typical medical pcb technologies in terms of medical device circuits: 

1.     HDI in medical pcb assembly process

This technique is suitable because it involves penetrating into the pad, which reduces the space for attachment on the circuit board. This method has the ability to save up to 40%-50% of the area in the presence of other circuit parts.

This method has also aided in more efficient and well-performing electronic devices and useful gadgets which are tech-based. Other vias can also be used and are viable for space reduction during the circuit board assembling. These are also beneficial for improving and then maintaining the component density. 

2.     SMT

SMT PCB is involved in the majority of electronic gadgets being produced these days. There are some prominent benefits of this technology as the circuit boards get manufactured. The method is beneficial in terms of giving extra room for smooth adjustment of other circuit parts since surface mount circuit parts are minute in size and do not gather large space. Not only are these small, but they also permit fine soldering and assembly of these circuits. This saves time and money and also offers durability. 

3.     Spaces and Fine Lines of Medical PCBs

The future of electronics depends largely on HDI printed circuit boards. These include small lines and consume less space as compared to others. The technique is common to use since it is more dependable than the former techniques. The benefits of this method are small sizes of circuits, good type of routing, and low fabrication prices. 

Major Applications or Areas of Medical PCBA in the Industry of Healthcare 

PCBs and electronics are both such factors that are important for the sustenance of the medical sector. There are many applications of these circuits, which include diagnostic, monitoring, and other types of medical devices. These circuits have opened a new doorway for hospitals to execute medical machinery in an effective way by relying on these circuit boards. 

Generally used applications:

1.      Scanning Device: Common medical devices such as Ultrasound machines, X-ray machines or scanning machines all include electronic components like circuit boards for their performance. 

2.      Monitors: Different monitors used in hospitals, like machines for monitoring blood glucose levels or heart rates contain these circuit boards. 

3.      Medical Instruments: These circuits are an important part of medical research equipment like microscopes and others.

4.      It is essential for medical PCB manufacturers to produce medical-grade products that can be easily incorporated into medical devices by the technicians. These should serve in the long run and must be durable as well. These are generally smaller in size as per the type of devices they are used for. 

Tips For Designing A Medical PCBA Design And Assembly 

Below is an important list of factors to consider if the medical equipment includes circuit board assembly and counterparts. 

1.      Is it safe enough for frequent utilization?

2.      How much is the degree of compliance?

3.      Does it offer obsolescence?

4.      What technique does it follow, SMT or through-hole?

5.      Is it a Shrinking device?

6.      What is the size of the circuit parts? 

Safety First

An ideal assembly of medical equipment has to be supportive to: 

·        Drastic temperatures (hot/cold)

·        Liquid substances

·        Shocks and jolts

Different patients need several medical devices inside their body, or sometimes these are attached to the external side of the body. In both cases, circuit boards and devices made from them need to endure the abovementioned setbacks to protect the patient’s life. Owing to this fact, class 3 electronics and circuit boards are always reliable. It is better to consult the manufacturer before making any decision about it.

Maintenance is another factor that is associated with the circuit boards. The medical gear needs to be cleaned all the time and sanitized to ensure the killing and complete removal of germs. Stainless steel medical equipment is always beneficial for hospital purposes. Another option besides stainless steel is the conformal coating which has the following benefits. 

·        It resists contamination due to frequent usage. 

·        Avoids Moisture on the devices. 

·        Protects the equipment from corrosion and rust problems. 

·        Does not accumulate dust and keeps the devices clean. 

·        Supportive of salt spray as well. 


Medical devices of class 3 predicate a rigid standard of production. Some clients need something more sophisticated and pristine than class 3 medical equipment. The most important responsibility of a manufacturer is to develop something that at least includes a class 3 benchmark. Some producers work on class 3 grade while others don’t even know it. That’s the reason it is important to learn about the producers and consult with them about class 3.

It is important for the clients to keep records and track the circuit components that they have ordered. It especially implies that the hospitals and pertinent managerial staff keep track of progress and completely inspect the ordered equipment as per authorized FDA and ISO standards. The nature of contractors is also important in this aspect.

It is reliable to take the help of a service that is reviewed, tried, and tested. The quality management system of service matters more than the price it demands. 


All electronic medical devices stakeholders and producers need to be ready for sudden revisions and send-backs when it comes to the circuit components. An ideal contractor will analyze the military circuit boards with the help of a silicon expert or some other database.

This also helps in sustaining the supply chains. It is better to review and re-check the circuit parts to see if they have undergone mechanical abrasion or not. It is important to get the damaged parts replaced as soon as possible.


Profound knowledge and education on the printed circuit board assembly are important for the users to meet their own expectations. The surface mount technique is dominating so many devices, and it is getting crucial to make the right choice on all counts.

Through hole, the method is a reliable one since many buyers and contractors recommend it for permanent impressive performance. The clients can get both services as per their needs. 


The size of the circuit boards and their parts also matters. Mostly the smaller size is integral and beneficial in terms of performance and durability. Electronic devices are also getting smaller in shape and size.

The package size is something that different contractors will help the buyers with so that they can have the perfect fit for themselves. Smaller parts need more precision and care. It means the contractor must be able to assemble all of these minute things in the right way. 

Final Verdict 

The medical sector is augmenting its scope and magnitude at a rapid pace. In this case, circuit boards are getting more crucial for medical gear in hospitals and private clinics. These devices are expedient and have become more accurate due to these circuit boards.

There are numerous applications where these circuits are easily installable and enhance their functioning when it comes to monitoring patients or either diagnoses some fatal and deadly diseases in time to save the patient’s life.

There is still a margin present to make these devices more precise in their performance to serve the patients and ease the life of doctors and paramedical staff when they need to manage tons of patients at the same time. 

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