WRM-4
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ms elektronik
3.2. Soldering properly
Use a soldering iron with temperature control, which you set to approx. 300 °C.
Only use electronic solder with a flux.
Never use soldering water or soldering grease when soldering electronic circuits. These
contain an acid that destroys components and conductor paths.
Insert the connecting wires of the components as far as possible through the holes of the
board without using force. The body of the component should be close above the board.
Make sure that the polarity of the components is correct before soldering them.
Solder quickly: soldering for too long can coffe pads or tracks to become detached or even
destroy components.
Hold the soldering tip on the soldering point in such a way that it touches the component
wire and the pad at the same time. Add (not too much) solder simultaneously. As soon as
the solder begins to flow, remove it from the soldering point. Then wait a moment for the
solder to flow well before removing the soldering iron from the soldering joint.
Do not move the component you have just soldered for about 5 seconds.
A clean, non-oxidised (scale-free) soldering tip is essential for a perfect soldering joint and
good soldering. Therefore, before each soldering, wipe off excess solder and dirt with a
damp sponge, a thick damp cloth or a silicone wiper.
After soldering, cut off the connecting wires directly above the soldering point with a side
cutter.
After assembly, always check each circuit again to ensure that all components are correctly
inserted and polarised. Also check that no connections or tracks have been accidentally
bridged with tin. This can lead not only to malfunction, but also to the destruction of
expensive components. You can re-liquefy excess solder with the clean hot soldering tip.
The solder then flows from the board to the soldering tip.
8 | Assembling the kit