Can rosin core solder work with leds?

Yes, rosin core solder can be used with LEDs, as it provides a good electrical connection while minimizing oxidation during the soldering process. However, care must be taken to avoid overheating the LED components, as excessive heat can damage them. It's best to use a soldering iron with a fine tip and work quickly to maintain the integrity of the LED. Additionally, ensure proper soldering technique to avoid cold joints.