PHOBOS GERMANIUM FUZZ
18
GERMANIUM TRANSISTORS: Q1 AND Q2
PART VALUE
Q1
Germanium
Q2
Germanium
Now that we’ve covered the basics of germanium transistors, it’s time to install them. Q1 and Q2 are
similar while Q3 is a different type, so we’ll cover Q1/2 first and then Q3 on the next page.
Note:
Q1 may be one of two types, either with its legs in a triangle formation as shown in the main
PCB image, or with its legs in a straight line as shown in the diagram on the right. The PCB will match
the transistor configuration.
The straight-line transistors have a painted white or red dot on one side
indicating the emitter. Make sure this lines up with the dot on the PCB silkscreen when you install it.
Remove Q1 from the bag. As mentioned on the previous page, it’s important to leave Q2 in its bag until
Q1 has been soldered so they don’t get mixed up.
Insert it into the pads on the PCB, being mindful of the orientation (either the “V” pattern or the emitter
dot). Keep it raised about 3/8” (9.5mm) above the PCB, then bend the legs on the bottom side to keep
it attached. Turn the PCB over and let it hang down while you solder it in place. Be quick and make sure
the transistor casing doesn’t get too hot or the transistor could be damaged.
Now, repeat the same steps with Q2. The legs of this one will always be in a triangular pattern.
Once the first two transistors are installed, check to make sure they aren’t making physical contact with
each other. The base pins are connected to the metal casing, so anything they touch will be shorted
against the base. If they’re touching, just bend them slightly away from each other and they should
remain that way.
Q1 ALTERNATE
CONFIGURATION
