When we talk about custom PCBs, the cost of the PCB testing component is also part of the PCB manufacturing cost, which some people see as an additional expense, rather than as a basic quality control measure.

Before understanding the PCB boundary-scan test, you can first understand the PCB standard test content. This article will lead you to understand what is boundary-scan testing, and its benefits for PCB assembly.

Why need to test PCB?

The question is simple, testing is the only way to ensure product quality. Testing of PCBs can effectively avoid the subsequent generation of errors and thus costly. Errors not only consume time, but also cost money and are detrimental to the product launch.

On the other hand, adequate testing can effectively detect defective products without letting them reach consumers and affecting the company’s reputation.

Determining the appropriate PCB functional testing helps to determine the quality of the product without increasing the cost of testing.

Main content of PCB assembly testing

When it comes to PCB testing, we mainly evaluate three aspects of PCB structural devices, structural connections and functional connections.

Test methods:

• Visual testing
• Automated optical testing
• X-ray inspection
• ICT in-circuit testing
• JTAG boundary scan
• Test Software Customization

What are the benefits of PCB boundary testing?

• The advantages of boundary testing for PCB assembly are
  broad coverage, covering a large portion of the PCOLA/SOQ/FAM spectrum, which is an end-to-end method covering the entire test range
• Reduced need for other structural test methods
• Important when physical access is limited
• Cost-effective, requiring no test fixtures as well as equipment maintenance and a better overall cost than methods such as ICT
• Short testing time, which can speed time to market

To summarize

The purpose of testing is precisely to improve the yield of the product. When selecting a test method, all aspects must be considered. Proper use of a combination of test methods can ensure the quality of your product and speed time to market.

KingPCB offers a wide range of PCB testing methods to ensure the maximum quality of each PCB, our advantage is not only in PCB manufacturing, but also in PCB assembly. Fast assembly and high quality set us apart from other suppliers.

Contact us now for a quick quote on your PCB project!