What type of solder should be used when a technician solders a spade connector to a wire?

When soldering a spade connector to a wire, the use of 95/5 solder, which consists of 95% tin and 5% antimony, offers several advantages in terms of strength and durability. This type of solder provides a strong mechanical bond, which is essential for electrical connections that may experience movement or vibration. Additionally, the high tin content contributes to better electrical conductivity and improved resistance to corrosion.

Considering the options available, while 60/40 and 50/50 solders are traditional lead-based solders with a combination of lead and tin, they may not perform as well in high-performance or environmentally-conscious applications. Lead-free solder is increasingly recommended in many industries due to health and environmental regulations, but the specific formulation of 95/5 is particularly beneficial for its soldering properties in high-stress situations, making it suitable for connections like spade connectors.

Therefore, the choice of 95/5 solder for spade connectors is based on its effective characteristics that enhance connection reliability and performance.