Tag Archives: Whisker Growth

Whisker Growth in Printed Circuit Boards

in whiskers are not fanciful or imaginative items, but are real and pose a serious problem for all types of electronic manufacturing. Pure tin is often used as a finish material on printed circuit boards (PCBs) to protect the exposed copper pads from tarnishing. However, pure tin spontaneously grows conductive whiskers, thin wire like growth that can form electrical paths and affect the operation of the PCB assembly. Understanding Tin Whiskers and their Effects First reported in the 1940s, tin Read more [...]

Preventing or Mitigating Whisker Growth in PCBs

Growth of whiskers puts PCB assembly at considerable risk, since whiskers interfere with components, and this automatically qualifies a good product as a defective one. Although a growing tin whisker may seem harmless, it can pose a very real threat to both the product as well as to the human operator. In PCB assembly, one of the most common problems that whiskers create is a short circuit or arcing. This can cause breakdown of electrical equipment, as well as harm people from the arcing. Either Read more [...]