Car died while stopped at stop sign jump started got home replaced alternator starts with jump then dies removed pos. term. with key off strong spark...

Alternator is not charging, to test, start engine
And remove battery positive cable, if engine dies sure sign of alternator not charging. Replace alternator.

sounds like alternator failing and not charging the battery or dead cell in battery or could be belt going to alternator slipping check the tensioner

Did you check your alternator output, Auto Zone will check that out for free.

alternator problem ,start engine the remove a battery terminal if engine stops renew the alternator

All of these are signs of a dying battery, because it's not recharged by the alternator.
Test the alternator this way: jump the battery from a running car and start your engine; rev the engine to about 2500 rpm and disconnect the jumpers; test the voltage - on a working alternator it should read 14 to 14.5 volts; if it shows 12 volts or less then the alternator is totally dead.

I would check ignition items or fuel delivery if it just died on you. It wont be the battery unless it was dead and the alternator stop working.

try the alternator. go to auto zone and have a technician come out and run a diagnostic on power system.

You may need a new battery (alternator will keep it running once jumped but if you stop, the idle may not keep the car powered long enough). If you've never replaced the battery, its about time - they have a life of about 5 years.

need to have the alternator tested sounds like a bad voltage regulator.