This type of terminal barrel lends much better to crimp then solder than do insulated terminals. This is a bare non-insulated "B" or "F" type crimp terminal. You crimp it with the correct tooling then apply solder to the very end of the wire and let some flow into the "B" for butt cheek.


NOTE: Please take note that in this image, and in the last image you saw, proper crimping has not allowed solder to flow beyond the crimp-band. Solder that flows beyond the crimp band would create the proverbial "hard spot" which ABYC and other standards want to avoid.


If you use the proper tools, the solder should not flow beyond the crimp-band to the part of the wire that needs to remain flexible. If you use Dollar Store grade tools well, sure, you can create a hard spot and the wire could fracture.

This type of crimp takes yet more tools in your bag, terminals that are harder to find in a good quality level, you will need to self-insulate the terminal and it takes considerable time to execute properly.


IMPORTANT: I do not recommend nor suggest doing a crimp & solder as it is really unnecessary IF you use the right tools to begin with.