Jim, I do not have a data sheet but the short data listing of "M" says it is
a 80 watt, Darlington, V(BR)CEX of1400 volts with a min beta of 20 at 4.0
amps.
looks like 1 us fall time.
Ray King
"Jim" <T6...@optonline.net> wrote in message
news:GzOxi.94$9x7...@newsfe12.lga...