Improving the quality of SMD assemblies in the avionics industry – components treated with Openair® plasma survive the burn-in test

The safety requirements for avionics are far more rigorous than those of other industrial products. Assembled circuit boards, for instance, are required to undergo burn-in, which is regarded as the toughest stress test available for electronic components. It is used to detect hidden manufacturing faults and to identify components which would fail in continuous operation.

A gently acting rotary nozzle applies the potential-free plasma to the SMD assembly.

Before undergoing the burn-in test, the plastic-coated SMDs of aeronautical radio equipment are pretreated with Openair® plasma to ensure the long-time stable adhesion of the conformal coating.The results show not only that the highly sensitive electronics survive the plasma exposure completely unscathed; the potential-free plasma treatment also enhances product quality.

Furthermore, this combined effect of microfine cleaning and activation reduces the number of individual operations required, which makes for a more efficient production process.

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