Is more solder better?
A common beginner’s assumption is the more solder the better but while more solder should increase the amount of material forming the joint, it is difficult to know what actually happened beneath that mass of solder. There still lies a possibility that neither the pin nor the pad is properly wetted.
How to fix a burnt solder joint?
If the solder refuses to flow the way you want it to:
- Stop and let the joint cool.
- Clean and tin your iron.
- Clean off any burnt flux from the joint.
- Let the iron come back up to temperature.
- Then reheat the joint and try again.
What happens if you overlap copper pads on PCB?
Each footprint that you place on your PCB contains a set of copper pads that will have an electric connection. If you overlap two parts and the pads touch in even the slightest amount, then you’ll allow a stream of electricity to cross between components, resulting in some unintended short circuits.
How are PCBs stacked on top of each other?
If you want to be able to seperate the boards again you can use feed through sockets on the top boards. You can stack an undefined number of PCB like this one on top of each other, with traversing components: Use M3 hexagonal standoffs to keep the stack of PCB solidly together and at regular intervals.
How are polarized components placed on a PCB?
Polarized components should be aligned such that all the positive poles are on one side of the board and negative poles on the other where possible. Avoid positioning taller components next to shorter ones, which may hinder inspection.
Is it safe to place components on the edge of a PCB?
However, if you do need to avoid placing components on the edge of your board because of assembly restrictions then make sure that all of your parts and traces are at least 20 mils away from the edge of your PCB. An example of a PCB panel, which gets snapped off after the board is complete.