CPC H01L 23/573 (2013.01) [H01L 23/5256 (2013.01); H01L 23/57 (2013.01); H01L 31/02019 (2013.01); H01L 31/105 (2013.01); H03K 17/94 (2013.01); H05K 1/0275 (2013.01)] | 19 Claims |
1. A method, comprising:
disposing a heater on or proximate to a frangible substrate such that the heater is thermally coupled to the frangible substrate, the frangible substrate comprising at least one pre-weakened area and a non-pre-weakened area; and
pre-conditioning the frangible substrate at or proximate to a location of the heater, wherein the pre-conditioning weakens the substrate at the pre-weakened area relative to the non-pre-weakened area without causing propagating fractures in the frangible substrate and wherein application of a predetermined level of energy to the heater initiates self-destruction of the frangible substrate by fractures propagating from the pre-weakened area and causing the frangible substrate to fracture;
wherein pre-conditioning the frangible substrate comprises activating the heater by an energy source at an energy lower than a threshold energy that initiates fractures in the pre-weakened area.
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