Recommended Tips for Soldering Cup Terminals
A cup terminal is a hollow cylinder with the lead wire inserted and soldered in place. Shape D is the recommended tip for soldering cup terminals.
The right amount of solder is needed to ensure a strong and stable connection between the terminal and the lead wires. It is easy to know if the solder amount is right with a simple visual check:
|Too Little Solder
|Too Much Solder
Before soldering, it is helpful to remove the gold plating of the terminal to allow the solder to adhere strongly. You may do this by adding solder to the solder connection of the terminal (shown in red below), and removing it with a desoldering wire multiple times. It also helps to pre-tin the wire to allow it to be inserted easily into the cup terminal.
NOTE: It is important to ensure that there is space between the insulation of the wire and the top of the cup terminal which will give it flexibility and allows bending.
Removing the gold plating allows solder to adhere better
Allow the wire to be exposed slightly above the cup terminal for flexibility
Shape D (more info)
There are 2 methods of soldering cup terminals.
1. Place the lead wire into the cup terminal.
1. Fold a length of solder wire onto itself and twist it up.
NOTE: It may require multiple tries to get the right amount of solder in cup terminal.