What happens if flux activity levels do not conform to stated standards?

When flux activity levels do not conform to stated standards, solder joints may fail due to inadequate wetting and bonding between the solder and the surfaces being joined. Flux plays a crucial role in the soldering process by cleaning and preventing oxidation on metal surfaces, which is essential for achieving strong and reliable joints. If the flux is ineffective or improperly used, it can lead to incomplete soldering, voids, or insufficient mechanical strength in the joints, ultimately resulting in failure during operation. This failure may manifest as intermittent connections or complete disconnections, which can be detrimental to the overall functionality and reliability of the electronic assembly. Maintaining proper flux activity levels is therefore essential to ensure high-quality solder joints that meet industry standards.