Santa Clara, CA
|reply to TheMG |
Re: Difluoroethane gas duster - oops, I fried a UPS!
said by TheMG:It is classic sustained ovecurrent damage where the die melts and the source lead separates.
The damage to the MOSFETs was due to arcing. The arcing continued until I pulled the battery connector.
They didn't go "pop". It started with a sizzle, a puff of smoke, followed by arcs and sparks.
When the current is somewhat limited it can take several seconds, and often results in a fire.