[Motorola] M4548

[Geoff Fors]

That Motorola transistor was in the Motracs as either the audio output or
one of the power supply inverter transistors.  PNP Ge if I recall correctly.

NTE may list a cross reference, however Motorola transistors are all unique
and not re-labeled generic items. The specs for Hfe and so forth in the NTE
and ECG books are their part's specs, which are usually pretty close , and
would probably be fine for any application using this kind of transistor.
Motorola did not publish the specs on the M- series transistors.  NTE and
its competitors get their cross references from customer requests and
customer input, and from doing things like curve-tracing and testing
original parts, rather than from any information from Motorola.

Geoff
WB6NVH