Must-read! PCBMASTER Teaches You How to Avoid PCB Soldering Temperature Pitfalls, the Key to Preventing Circuit Board Scrap!

Author: Jack Wang

The soldering temperature of circuit boards is a crucial aspect in electronic manufacturing, directly affecting the quality and performance of the circuit boards. The soldering temperature usually ranges from 180°C to 220°C. Temperatures that are too high or too low can lead to problems. Here are the key points of soldering temperature control and common pitfalls:

I. The Importance of Soldering Temperature

Soldering temperature directly affects the melting degree of solder and the soldering quality:

· Excessively high temperature: It may cause the solder to burn and oxidize, and even damage components.

· Insufficiently low temperature: The solder cannot fully melt, resulting in weak solder joints and affecting the performance of the circuit board.

II. Common Soldering Methods and Temperatures

· Manual soldering: An electric soldering iron is usually used, with a temperature of approximately 250°C.

· Machine soldering: For example, in wave soldering, the temperature is around 260°C.
Different soldering methods and temperatures have different impacts on soldering quality, and the appropriate method should be selected according to specific circumstances.

III. Hazards of Excessively High Soldering Temperature

· Solder joint failures: Solder joints may melt or short - circuit, leading to unstable connections.

· Open circuits: Wires or circuits may break due to high temperatures, causing the connection to be interrupted.

· Circuit board deformation: The expansion of the circuit board material due to high temperatures affects the installation of components.

· Component damage: High temperatures can damage temperature - sensitive electronic components.

· Oxidation and corrosion: Metals may oxidize or corrode, resulting in poor connections.

· Thermal stress: Rapid heating or cooling can cause cracks or damage.

IV. The Necessity of Soldering Temperature Control

· Protect components: Avoid component damage caused by high temperatures.

· Improve solder joint quality: Appropriate temperature and time ensure strong solder joints and prevent cracking.

· Ensure reliability: Controlling the soldering temperature can enhance the stability of the circuit board under various conditions.

V. Soldering Temperature Control Methods

· Select the appropriate soldering temperature and method.

· Use suitable soldering tools and materials.

· Control the soldering time and speed.

· Keep the soldering environment dry and clean.

VI. Soldering Temperature Recommendations

· For through - hole components: A temperature of 260°C is recommended as it can quickly melt the solder and ensure quality.

· In other cases: Adjust the temperature according to the type of solder and circuit board.

Summary

Strictly controlling the soldering temperature is the key to ensuring the quality and performance of circuit boards. Temperatures that are too high or too low can lead to problems such as solder joint failures and component damage. By reasonably controlling the soldering temperature, it is possible to effectively prevent circuit board scrap and improve product reliability.

If you want to learn more about this topic, you are welcome to consult PCBMASTER at any time. We are willing to answer any questions you may have.

Author: Jack Wang