QRP Labs QCX-mini CW, Руководство по сборке, Страница: 31 / 121

3.4 Install 100nF (0.1uF, “104”) capacitors
There are two 100nF (0.1uF) capacitors, these have the code “104” written on them. Be
sure to identify the correct capacitors, using a magnifying glass or jeweler's loupe. These
capacitors are C12 and C29. Place each in the correct position on the board, and slightly
bend the legs outwards at about 30-degrees angle so that they stay in place. Then solder
the wires, and trim the excess wire length with wire cutters.
It does not matter which way round the capacitors are installed. However, it is very good
practice to install them all with the capacitor label facing in the same direction. For example,
ensure all the “104” labels face to the front, or to the right (depending which way the
capacitor is orientated on the PCB). This makes it much easier to inspect the PCB
assembly later.
Take particular care soldering wires which connect to the ground plane. Despite the
“thermals” (a ground pad is connected to the ground plane by four thin traces, not a
continuous ground plane, to make soldering easier), the heat dissipation is still
more, and it can be harder to make a good joint.
QCX-mini assembly Rev 1.05
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