Category Archives: Soldering

Why BGA soldering ball always crack(10)? Reduce the impact of PCB bending through the mechanism design change

Reducing the Impact of Stress on PCB Deformation through Mechanism Design In earlier sections, WorkingBear briefly mentioned the possible solution by  changing mechanism design to address the problem of solder cracking. One such approach involves replacing the SMDs (surface mount … Continue reading

Why BGA soldering ball always crack(9)? Increase the resistance of components to stress

How to increasing the ability of components to resist stress? (Continuing from the previous article) 2. No solder balls on BGA four corners, or use dummy balls instead of them. If you had studied the actual phenomenon of BGA solder … Continue reading

Why BGA soldering ball always crack(7)? The Bonding force between solder pad of copper foil and PCB substrate

PCB is composed of layers of Copper Clad Laminate (CCL) and Prepreg (PP) stacked together. In modern PCB manufacturing, CCL has become a standard material. Each CCL manufacturer provides customers with product specifications that indicate the peel strength of the … Continue reading

Why BGA soldering ball always crack(6)? The recommendation of BGA pad design from workingbear

Below are recommendations for BGA pad design to enhance the soldering strength from Workingbear. We had several pages talking about the relationship between solder cracking and bonding force. Workingbear personally doesn’t think that making design a change to the pad … Continue reading

Why BGA soldering ball always crack(5)? Increase the contact area of solder to increase its strength

In the previous article, we talked about “How to Increase the bonding force for PCBA by using “Copper” base as the PCB surface finish“. Today, we will discuss further how the SMD (Solder Mask Defined) and NSMD (Non-Solder Mask Defined) … Continue reading