6 Best Solder for Electronics ReviewsKester Solder. First on our list is the Kester Solder, a 0.031 inches diameter steel-based solder with very high conductivity. ... Maiyum Solder Wire. ... SONEAK 60/40 Tin Lead Solder. ... Austor Solder Wire. ... Canfield Solder. ... Mandala Crafts Store Rosin Core Solder Wire.6 Jan 2022