I got an itch to learn how to make a stomp box. Found a cool anodized brass looking steel box in some scrap at work that would make a perfect housing. So I've been looking into effects pedals a bit and started going through some scrap electronics boards I have and pull some silicone transistors out them. wanting to either make a Fuzz Face or a Rangemaster.
If these are not applicable, what are some I should be looking out for. Don't know the difference from NPN vs PNP but it appears PNPs are germanium and difficult to work with...so I'll stick with modern silicone for my first project.
PNP, NPN can be either silicon or Germanium. There is also the JFET and MOSFET. What you have is probably not MOSFET, but until the numbers are determined. we'll never know.
From 1991 ECG212Q ECG Semiconductors Master Replacement Guide. IF this is accurate enough AND the part numbers are old enough...
MMZ12 (06)-> ECG-143A -> Zener Diode 14V 1W - NOT a match if your package doesn't look like a Diode.
C1364 -> EGC-85 -> NPN Si GP amp or Switching TO-92 case
C1363 -> ECG-289A -> NPN-Si AF (low) PWR AMP TO-92 case Complementary to ECG-290A
A678 -> EGC290A -> PNP-Si AF (low) PWR AMP TO-92 Case Complementary to EGC-289A
[EDIT:] IF they are accurate enough, the ECG numbers will be pretty easy to get specs on.