Electronic circuits consist of sensitive components that constitute the heart of modern technology. Due to their structural features, these components are more likely to be affected by various environmental conditions. In this article, we will discuss why electronic circuits are sensitive and which methods should be used to protect them from environmental factors such as water and dust.
1. Conformal Coating:
- A thin polymer layer is applied over the electronic circuits to protect them against water and dust ingress.
- Can be applied using various materials such as acrylic, silicone, polyurethane; each material has its strengths and weaknesses, thus the material used varies depending on the product’s feature.
2. Potting:
- This process is referred to as the protection of circuits by completely covering with an epoxy resin or similar material.
- Contact of electronic components with water may cause a short circuit and damage the components. Potting prevents such hazards.
3. Waterproof Connectors:
- Waterproof connectors are used at the connection points of the circuits; this application ensures that our equipment is protected from external factors and the damage to be caused by water.
4. Sealed Boxes and Enclosures:
- It means equipping of the boxes or enclosures where the electronic circuits are placed with water and dust resistant seals.
- Gaskets provide sealing and protect from external environmental conditions.
What are IP (Ingress Protection) Standards?
IP Standard (Ingress Protection Rating) is the rating used to measure the resistance of electrical devices to water and dust. These ratings are published by the International Electrotechnical Commission (IEC). Another purpose of publishing these codes is to provide more detailed technical information about the product.
What is IEC 60529?
IEC 60529 is a standard published by the International Electrotechnical Commission (IEC) that specifies the protection levels of electrical equipment from external factors. This standard defines the IP (Ingress Protection) coding system used to determine degrees of protection.
What is IP Protection?
IP (Ingress Protection) code is an international standard that indicates the resistance of electronic devices to water and dust ingress. IP codes are specified according to the IEC 60529 standard and are expressed with a two-digit number.
——————————————-
The 1st digit, which indicates the degree of protection against dust, varies between 0 and 6.
——————————————-
The 2nd digit, which indicates the degree of protection against water, varies between 0 and 9.
Exemplary IP Codes:
IP 67
- Completely dustproof. (6)
- Waterproof to a depth of 1 m. (7)
IP 54
- Limited dust ingress is allowed but does not affect the operation of the device (5)
- Protection against splashing water (4)
These methods and standards are critical to ensuring the reliability and longevity of electronic devices. Appropriate protection methods and compliance with correct IP classifications ensure safe operation of devices in various environmental conditions.
