Preformed tin-pcb

Most of today's electronic components are getting smaller and smaller, and the small chip has been reduced from the original 1206 size to 0805, 0603, 0402, 0201 to almost the limit of 01005. The smaller the size of these parts, the more tin they eat. The less the thickness of the opposite steel plate, the thinner the thickness of the opposite steel plate, from the most commonly used 0.18mm thickness to the current 0.10mm, but not all parts can be reduced in size, like some connections to the outside world. Connectors, such as telephone line jacks, network routing jacks, ATM card readers, etc. These parts still require a certain amount of solder to ensure the strength and quality of their soldering, and some traditional plug-in (DIP) parts are used. Additional solder flux is also required for the past-in-hole process.

This is an extra cost and the tape and reel packaging may be more expensive than the pre-formed tin itself. If you can, buy bulk materials to roll your own materials, perhaps saving some money.