Lightweight liquid protection to protect PCBAs and allow re-work where necessary to maximise yields are key for protecting drones. In addition, minimal masking in assembly through the use of ultra-thin plasma coatings will deliver the lowest total cost of ownership.

Current Issues

Confidence in the ability for drones to fly reliably in all manner of weather conditions, without the fear they will lose connection, location or power and drop out of the sky uncontrollably.

Protection to electronics with the highest level of reliability from corrosion damage, even though the product housing has large holes and gaps and in instances the boards are mounted to the outside of the drone; so maximum exposure and requires high levels of mechanical durability.

Requires the ability to solder-through the PCBA coatings whilst achieving good attachment for heat dissipation in high vibration scenarios.

Differentiation from incumbent solutions

Mechanical seals are not a viable options as inherent holes and gaps are actively built in due to criticality for 5G connection.

Parylene can’t be soldered through and are not halogen free.

Liquid dispensed methods can attenuate signals which is not acceptable for reliable connections and timely transfer, are not secured at the board level so migrate and reduce reliability.

P2i's Solution

Barrier coating will be critical post SMT for all products as water and environmental challenges will get inside the device and cause corrosion and product failure.

The Barrier caoting delivers maximum protection, that is lightweght and reworkable with no board level PCBA masking in production.

Additional benefits of providing Splash-proof to prevent initial water ingress will depend on the specific product design and environmental challenge to be protected from.

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