Essential Steps for Efficient PCB Etching Process

1. Before etching, it is crucial to establish the etching parameters, such as rate and temperature, during the initial board processing. Assessing pattern accuracy and line width post-etching is vital before moving on to batch processing.
2. Equip the etching section with inspection tools like a scale microscope for thorough pre- and post-etching inspections. Using a scale microscope enables precise examination of microstrip line width, aiding in timely issue identification and improving overall processing quality.
3. Align denser wire patterns with the etching machine’s transmission direction to prevent etching solution accumulation on the PCB surface. During etching, position the denser wire side downwards and the sparser side upwards for uniform etching on both sides of the circuit pattern.
4. Constant monitoring of the etching machine is essential throughout the process. Regular checks on nozzle spraying status, conveyor belt operation, and overall machine functionality help prevent mechanical failures, scratch lines, and wastage during etching.