Patent ID: 9733134
Date: 2017-08-15
CPC Classifications: B23K,G01K,H05K

Claim:
1. A method comprising: providing a printed circuit board; supporting a solderable component on the printed circuit board; supporting a first fuse and a second fuse on the printed circuit board, wherein the first fuse comprises a first temperature-sensitive element that measurably changes electrical resistance in response to exposure of the first fuse to ambient thermal conditions exceeding a first threshold temperature and wherein the second fuse comprises a second temperature-sensitive element that measurably changes electrical resistance in response to exposure of the second fuse to ambient thermal conditions exceeding a second threshold temperature such that the printed circuit board, the solderable component, and the first fuse define an apparatus, the printed circuit board, the solderable component, the first fuse and the second fuse comprise a printed circuit board assembly; performing a printed circuit board assembly manufacturing process on the apparatus; and testing the first fuse after termination of the printed circuit board assembly manufacturing process to determine whether, during the printed circuit board assembly manufacturing process, the first fuse was exposed to ambient thermal conditions exceeding the first threshold temperature; testing the second fuse after termination of the printed circuit board assembly manufacturing process to determine whether, during the printed circuit board assembly manufacturing process, the second fuse was exposed to ambient thermal conditions exceeding the second threshold temperature; wherein the first threshold temperature comprises a minimum temperature at which the printed circuit board assembly manufacturing process used to manufacture the printed circuit board assembly is to be carried out and the second threshold temperature comprises a maximum temperature at which the printed circuit board assembly manufacturing process is to occur, the minimum temperature and the maximum temperature are related to temperature specifications of the printed circuit board assembly manufacturing process.