Electrical and electronic equipment deteriorates or malfunctions when water and/or dust enters the device. Similarly, when equipment is subjected to mechanical and/or thermal stress. The CEI has developed Ingress Protection (IP) ratings, which assess the resistance of equipment to dust and/or liquid intrusion and/or shock. The ratings are widely used in industry.
If you are reading this note. This indicates that you are one of the consumers who are interested in the functionality of electrical and electronic products, including their levels of resistance to liquids, dust and shock.
However, you may find it difficult to assess what terms such as waterproof or water-resistant mean, especially when used for marketing purposes.
Each environment has specific characteristics related to stress, mechanical, thermal, humidity, wind, rain and immersion. This is why each product must have a different IP rating. IP69K is often the highest known.
Consider the highest known IP69K rating in waterproof and ruggedized products. This IP rating suggests full protection against dust and protection against steam cleaning (water temperatures from -22°F (-30°C) to 158 F (70°C)). It is NF EN 60529/A1 of June 2000 and NF EN 60529/A2 of May 2014, which lay down the conditions for the tests including those relating to IK shock. In the image above, the letter K specifies the impact resistance (optional pressure).
The presence of the IP89K rating in the technical documents of the products manufactured by Freemindtronic suggests that the level of resistance is higher than the IP69K rating due to the physical characteristics of all the elements making up the product.
The IP89K rating suggests that the first IP8 segment corresponds to IP68. This means fully dustproof, protected against dust and protected against prolonged immersion to more than 1m and resistant to high water pressure for more than 30 minutes. While the 9K segment indicates that the product is resistant to temperatures between -40°F (-40°C) and 302°F (150°C) and to a 10J or 5kg shock in a 20cm space.
NFC hardware safety modules are made up of 3 groups of elements, the PCB, the electronic components and the coating of the component.
The characteristics of the FR4 hihg TG 170 PCB without surface treatment is resistant to a pressure of 27.46 bar or 28 kg/cm² with a water absorption resistance level of approximately 0.10% over 24 hours of total immersion and resistant to -40 °C (-76 °F) to +170 °C (+338 °F). The resin coating of the electronic components has a resistance of 1050 bar or 1070.70 Kg/cm2 for a water absorption resistance level of 0.66% over 30 days of immersion and is resistant to -60°C (-76°F) to +200°C (+392°F). The silicon-based electronic components are water and dust resistant. They are soldered between 180 °C (356 °F) and 240 °C (464 °F). They operate only without contact under the coating and through the PCB between -40 °C (-40 °F) and +85 °C (+185 °F). Although the lowest level is the FR4 hihg TG 170 PCB, which also has a surface treatment, exceeds all maximum IP68 and 9K ratings.
| Indice IK | IK 01 | IK 02 | IK 03 | IK 04 | IK 05 | IK 06 | IK 07 | IK 08 | IK 09 | IK 10 |
| Energie en Joules | 0.15J | 0.20J | 0.35J | 0.5J | 0.70J | 1J | 2J | 5J | 10J | 20J |
For more information on the IP standard click here
