At Syrma, we offer a variety of turnkey electronic and manufacturing tools and services, such as manufacturing defect analysis testing. Using a manufacturing defect analyzer (MDA) tool, we’re able to easily identify any existing manufacturing defects in printed circuit boards (PCB). This type of tool is a simplified version of the In-Circuit Test (ICT) and is designed to provide straightforward testing of a circuit board in order to identify any manufacturing defects. However, the tool is limited to measuring continuity because most manufacturing defects are connectivity problems.
MDAs Excel at Detecting an Array of Manufacturing Defects
Because the concept of the MDA tool assumes that the parts on a printed circuit board are dependable and seldom defective, it’s generally used to test for very basic manufacturing defects, which, if left undetected, would hinder the performance or assembly of a circuit board. Basic MDAs should be capable of detecting such defects as missing components. Depending on the functionalities revealed in an MDA’s datasheet, some specialize in detecting resistors while others are capable of detecting parts like transistors and capacitors.
Testers work by making connections to the circuit boards being tested via a bed of nails fixture. Because testers generally have to connect with very precise points on any given board, more than one fixture is usually necessary for each circuit board. At the beginning of a test, MDAs will act like other types of ICTs by using a printed circuit board’s CAD data to generate the test program and fixture design. Fortunately, this level of automation allows an estimated 80% of a test program to generate automatically.
Manufacturing Defect Analysis Testing Boasts an Array of Benefits
One of the big advantages of traditional MDA testing is that it’s simpler than running an ICT. This fact alone makes MDAs much more attractive to smaller companies who may not have the money to spend on an ICT. An MDA is a great tool to have on hand even for larger businesses because not every test will warrant an extensive ICT. MDAs are also beneficial because they’re able to find short and open circuits that often contribute to the majority of defects.
However, every tool has its downsides, and it’s important to know what those are before deciding on a tester. What are some of the disadvantages of implementing manufacturing defect analysis testing? Depending on the scenario, MDAs can have constrained component diagnostics, and access to components can pose an issue given density levels found in most MDAs. Also, some professionals in the industry view the fact that MDAs still require bed of nails fixtures as a disadvantage. There are pros and cons to an MDA, just like any other tool. Knowing the advantages and disadvantages will make it easier to determine what type of tester and test technology to use in any given scenario.
Syrma offers comprehensive electronic failure analysis (FA) of multiple assemblies and components for printed circuit boards (PCBs), printed wiring boards (PWBs), integrated circuits, memory chips, etc. We specialize in detecting specific electronics defects, such as generalized corrosion, plated through-hole failures, microstructural characterization, and electrical contact problems. Our certified technicians are able to analyze devices, components, and assemblies for specific defects, such as corrosion, thermal fatigue, and connector failures. To learn more about our failure analysis service, visit this page.