5 Ways to Avoid PCB Failure


February 25, 2022

It’s aggravating when there’s is a PCB failure. It’s expensive, cumbersome, and can harm your brand. However, PCBs are delicate devices, and failures can be caused by a variety of factors, including the weather and age. The top five reasons for PCB failure, as well as strategies to lessen the likelihood of failure, are listed below.

1. Environmental considerations are the number one cause of PCB failure.

Because PCBs can expand and contract as temperatures fluctuate, and boards can get deformed, those in moist or particularly hostile conditions are prone to several forms of PCB failure. With all of this movement, soldered joints might easily be broken, resulting in board failure. When a component’s barrier is damaged and air particles such as dirt, dust, and moisture get into the component, or circuit board, this type of problem occurs.

LHD Technology used a vacuum package and added a small pack of desiccant to the ready PCB to prevent moisture from penetrating the inner layer and efficiently prevent air corrosion on the bonding pad while stocking the PCB. LHD Technology bakes its PCBs to remove moisture before assembly and can conformal coat based on PCBA environment requirements.

2. Components that have been poorly constructed are prone to PCB failure.

Poor construction is one of the most common causes of PCB failure. Incorrect soldering temperatures, bare board and component misalignment, and dry joints are all signs of a badly made PCB.

LHD Technology has worked hard to establish a reputation for producing high-quality PCBs. We’ve been in the PCB industry since 2004, and we’re just getting stronger. That means our PCBs are valued, and we’re gaining a good reputation among our customers. Furthermore, LHD Technology has established a faultless supply chain by collaborating with reliable component vendors.

3. Components that have been burned

PCBs can get quite warm, causing components to operate outside of their normal operating temperatures. A component’s heat capacity is limited and is mostly determined by its size and structure. Make sure your components have enough room around them for air to circulate around any heat sinks, and that they are operating within their capabilities while constructing your PCB.

4. The impact of atmospheric conditions on the production process

The environment in which PCBs are built can have an impact on their performance. PCBs can develop flaws if they become dusty and unclean, or if they come into contact with hair or bugs. Ensure that the labs where PCBs are manufactured are kept clean and dry in order to produce high-quality circuit boards.

LHD’s PCB assembly process takes place in a dust-free environment. Before entering the SMT room, all employees must wear anti-static apparel, wear a hygiene cap, wear shoes covers, and take an air shower.

5. Acid traps and other problems in the design

Occasionally, the failure is due to a flaw in the original design. Acid might become caught up in the etching process when acute angles are used in a circuit. Enchanting in a location for longer than planned might eat away at the circuit, causing it to fail. If at all feasible, avoid 90-degree angles in circuit board design.


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