Install The Diodes; Diode Notes; Install The To-92 Package Transistors - DYNACO PAT-4 Assembly Manual

Install the Diodes

Be careful! Diodes have a polarity. Make sure the band on the diode aligns with
the banded end of the silk screen!
Designation Value
D4 1N4004
D5 1N4004
D7 1N4004
D8 1N4004
D9 1N4004
D10 1N4004
Here's what the 1N4004 diodes look like (not to scale). The package type is known as a
DO-41. The body is black, with a white stripe:
Be careful! Diodes have a polarity. Make sure the band on the diode aligns with the
banded end of the silk screen!
Designation Value
D1 TZX6V2C
D2 1N4148
D3 1N4148
D1-D3 have a glass body. They are packaged in the DO-35 package, a smaller package
than the 1N4004's.

Diode Notes

The designator D6 is not used.

Install the TO-92 Package Transistors

The TO-92 package looks like this:
In some cases, the leads may be bent as the picture above shows. In other cases, you may
have to spread the outside leads a bit to make it easier to insert them into the board.
Orient the transistor so its body shape matches the silk-screen outline. Leave the top of
the transistor about ½" off the board! The lead length prevents stress on the body and
keeps the transistor safe from too much heat during the soldering operation.
Marking, type
4004, 400 PIV 1 Amp
4004
4004
4004
4004
4004
Marking, Type
TZX6V2, 6.2 Volt Zener, 0.5 Watt
The number 48 is visible, 75 PIV, 100 mA
The number 48 is visible, 75 PIV, 100 mA
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