Technical Articles

What is IP68 waterproof rating?

In the world of electronics, water damage is a major concern. Whether it's a smartphone or a fitness tracker, being exposed to water can cause irreparable damage. That's where the Ingress Protection (IP) rating system comes into play. The IP rating measures an object's resistance to solid particles and liquids.

The meaning behind "IP68"

The IP rating has a two-digit number format, with the first digit representing solid particle protection and the second digit representing liquid ingress protection. In the case of IP68, the "6" indicates that the device is completely dustproof. It means that no solid particle can enter the device, regardless of its size. The "8" indicates the highest level of liquid ingress protection – the device can be submerged in more than 1 meter of water for extended periods without any adverse effects.

Design considerations for achieving IP68 waterproof rating

Achieving an IP68 rating necessitates careful design and engineering. One critical aspect is ensuring that all external ports are adequately sealed to prevent water from entering. This often involves using specialized gaskets, o-rings, or adhesive barriers to create a watertight seal. Additionally, the components inside the device need to be properly protected. This can involve conformal coatings on printed circuit boards, waterproof connectors, or encapsulation of sensitive parts.

Limitations of IP68 waterproof rating

While an IP68 rating provides excellent water resistance, there are still limitations to consider. Firstly, the rating is tested under controlled lab conditions and might not accurately represent real-life scenarios. Exposure to various types of liquids and extreme temperatures can impact a device's water resistance. Furthermore, IP68 does not guarantee complete protection against corrosive substances, such as saltwater or chemicals. Regular maintenance and care are still necessary even for devices with an IP68 rating.

In conclusion, achieving an IP68 waterproof rating requires meticulous design considerations, including adequate sealing of external ports and protection of internal components. It provides a high level of water resistance, allowing devices to be submerged in water without damage. However, limitations exist, and users should exercise caution and follow manufacturer guidelines to maintain the device's water resistance over time.



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