The wire wound inductor disconnected, what is the cause?
In order to focus on the performance, there are portions of the wire wound inductor which are coated with resin. Even if there is coating, the lead lines are not protected. For this reason, pay sufficient attention when handling the components, and be careful not to scratch the components with pincettes or etc. Also, if the board mounted with components is stored in a stack, the corner of the boards will make contact with the components of the other boards and cause wire breakage.