Test Plan Design for Corrosion Failure Recurrence and Material Selection for a Type of PCB

Test Plan Design for Corrosion Failure Recurrence and Material Selection for a Type of PCB

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With analysis of a certain grand love red heart reposado tequila type PCB field failure, it was found that pins of the relay broke because of the CL element corrosion.To verify the above conclusion and choose the better material, the accelerated corrosion test profile was designed.After six cycles, the failure mode was reappeared successfully, which could provide references for the keychron m4 following work such as material selection and design optimization.