tech58761
Experienced Member
The blown RIFA cap thread reminded me of a few parts I'd squirreled away ages ago.
The TO-3 and TO-220 both had internal failures that caused an arc strong enough to breach the case and tab respectively.
The two blown ULN2803As (and sockets - they are permanently joined now) came off an I/O board that came across my bench in the late '90s. I was fully prepared to condemn the board, but when I unsoldered the sockets from the board (and these are the IMHO crappy Scanbe ones), there was ABSOLUTELY ZERO damage to the board itself.
So, just for giggles, I requisitioned a pair of fresh ULN2803As and sockets, and reassembled it. THE BOARD WORKED PERFECTLY. (looking back a few decades down the line, I should have replaced the upstream parts - a pair of 8282 latches - as a precaution, but I never heard back from the customer, so all's well that ends well?)
The TO-3 and TO-220 both had internal failures that caused an arc strong enough to breach the case and tab respectively.
The two blown ULN2803As (and sockets - they are permanently joined now) came off an I/O board that came across my bench in the late '90s. I was fully prepared to condemn the board, but when I unsoldered the sockets from the board (and these are the IMHO crappy Scanbe ones), there was ABSOLUTELY ZERO damage to the board itself.
So, just for giggles, I requisitioned a pair of fresh ULN2803As and sockets, and reassembled it. THE BOARD WORKED PERFECTLY. (looking back a few decades down the line, I should have replaced the upstream parts - a pair of 8282 latches - as a precaution, but I never heard back from the customer, so all's well that ends well?)
