GM DELCO transistor quiz

[Don.F.Broadus at ucm.com]

Jake,      Your transistor was made on the 47th  week of 1965. It is a P-N-P
germanium power transistor used in car radios. The ECG replacement is ECG
121.  Collector current is 10 amps , Max dissipation is 90 watts . this
transistor would not be a good choice for an injector driver, since
germanium transistors will go into thermal run away long before
Silicon transistors will.  The transistor was mounted on a heatsink on the
back of the radio and not on a circuit board.
Wires were hand soldered like you thought.
 
Don 



 -----Original Message-----
	From:	Jake Sternberg [SMTP:chickens at ccwf.cc.utexas.edu]
	Sent:	Tuesday, August 25, 1998 12:35 PM
	To:	diy_efi at esl.eng.ohio-state.edu
	Subject:	GM DELCO transistor quiz


	I have a few of these doodads, and i'm wondering if they're as
useful
	as they look, and if more could be sought out.

	it's a two-pin device (plus ground) in a TO-3 / TO-66 case, the kind
	on the back of 70s guitar amps, the big metal kind with two screw
	terminals.

	the two leads are labeled E and B (emitter and base) but the strange
thing
	is that at the ends of the leads, which are more than half an inch
long,
	the leads are flattened at their ends and a hole is poked through
this
	flat.. to make it easier to solder wires or a diode on perhaps.  it
	wouldn't be this way if it were for high volume installation to
	circuitboards, it must be hand-wired.

	anyway, the printing on the part is: DELCO GM 2N1168 6547

	any information would be appreciated. could this be an injector
driver?

	-jake