What is the key to reliable soldering?

Cleanliness is essential for reliable soldering because it ensures that the surfaces being joined are free from contaminants such as dirt, oil, and oxidation. When the surfaces are clean, the solder can make a strong bond, which is crucial for creating a reliable electrical connection. If the surfaces are not properly cleaned, the solder may not adhere properly, leading to weak connections that can fail over time.

Other factors, such as heat level, type of solder used, and speed, also play important roles in the soldering process. However, no matter how optimal these conditions are, if the surfaces are not clean, the overall effectiveness of the solder joint will be compromised. Cleanliness acts as the foundation for a successful soldering operation, making it the key to achieving reliability in soldered connections.