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Only use lead free ROSIN CORE solder!
Never use any liquid or paste flux!
PASTE
Hold the iron like a pencil and
only heat the component wire
for a few seconds.
Only add a little solder
each time
1. Preheat the solder area which
must be soldered AND the
component wire with the tip of the
iron.
Do NOT overheat it!
2. Add some solder to the
soldering area and
component wire but NOT
TOO MUCH!
3. Remove the solder and let
the hot liquid solder flow.
4. Take away the soldering iron.
DO NOT MOVE the component
or PCB!
5.Cut away the long component
wire just above the soldering spot.
The END RESULT is a nice and
shiny soldering spot which is
attached to the PCB copper and
component wire.
Correct position for professional soldering
Please NOTICE the correct positioning of the components, see the drawings below:
WRONG
GOOD
2.2 Soldering techniques: