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Supercritical CO2 Fluid Cleaning Integrated Circuit Board

SCF cleaning integrated circuit board process parameters
Laboratory equipment:L-05

Cleaning pressure: <10 MPa
Separation pressure: 6 MPa
Cleaning time: <90 min

Supercritical CO2 fluid cleaning circuit board
Supercritical CO2 fluid cleaning circuit board

This is an experiment, on July 1, 2020.

At the request of Taiwan Songhao Electromechanical Company, we carried out the IC board cleaning test.

Supercritical CO2 fluid cleaning circuit board
Supercritical CO2 fluid cleaning circuit board

The samples are 5 pieces of circuit boards that have been cut. From the photos, we can find that the soldering aid is very obvious and difficult to remove by conventional methods.

Parameters in the first test

Number of cleaning pieces: 2 pieces

Cleaning pressure: 15MPa.

CO2 flow rate: slightly

Cleaning time: 20 minutes

Supercritical fluid cleaning circuit board
Supercritical CO2 cleaning circuit board

Cleaning result: good

Parameters in the first test

Number of cleaning pieces: 3 pieces

Cleaning pressure: 9MPa.

Other processes: slightly

CO2 flow rate: slightly

Cleaning time: 15 minutes

Cleaning result: very good

Supercritical CO2 cleaning machine
Supercritical fluid cleaning machine