A connector is a common component in electronic equipment that is used to connect circuits together so that current can be transmitted smoothly and ensure the normal operation of the equipment.
They are widely used in a variety of fields and offer features such as reliability, high-speed transmission, high-density connectivity and durability to support device performance and functionality.
When it comes to electrical connections in automotive and industrial environments, it’s important to understand the differences between sealed and unsealed connectors. This article focuses on the subtle differences between these two types of connectors.
Definition and application scenarios
Sealed connectors are specially designed for electrical and signal transmission, and have sealing properties such as waterproof, dustproof, and anti-corrosion. They provide reliable connections in harsh environments and protect internal circuitry from the external environment.
Sealed connectors are widely used in automotive, aerospace, shipbuilding, military, industrial equipment, outdoor electronics and other fields. These applications have high requirements for connector sealing and reliability.
Non-sealed connectors have no sealing design, and the connectors are not specially treated to prevent liquid or dust from entering. Non-sealed connectors are usually used for internal slot connections in household appliances, IT equipment, and unimportant line connections inside automobiles. These applications do not require high protection levels and have low working environment requirements.
Sealing performance: Sealed connectors use special sealing materials, sealing rings or structures to prevent external substances such as water, dust and chemicals from entering the interior. This ensures reliable protection against corrosion and short circuits. Non-sealed connectors have a simpler structure and do not use sealing rings or other sealing devices, so their protective performance is low.
Protection level: Sealed connectors are waterproof, can work underwater or in humid environments, and meet specific waterproof standards, such as IP67 or IP68. Unsealed connectors have a lower level of protection and are not suitable for use in harsh environments, such as outdoors, humid or corrosive environments.
Special design: Sealed connectors usually have special connection and locking mechanisms to ensure a strong and reliable connection, so they cost more. They may contain additional sealing components such as O-rings or sealing threads. Unsealed connectors do not require these additional components and are relatively inexpensive to manufacture.
Dustproof performance: Sealed connectors effectively prevent the entry of tiny particles, dust and other impurities, preventing contamination and electrical problems at contact points. The open connector head of a non-sealed connector helps ventilation and heat dissipation and reduces efficiency reduction caused by temperature rise, so the dustproof performance is lower.
How to maintain?
Whether it is a sealed or unsealed connector, regular maintenance is required to ensure proper operation and extend service life.
Appearance inspection: Regularly inspect the appearance to ensure there is no damage. Sealed connectors require inspection of the condition of the plastic housing, plating, and seals, and unsealed connectors require inspection of the pins, sockets, and housing. If damage is found, repair or replace it in time.
Cleaning: Clean the connector surface regularly to remove dust, dirt, grease, etc. Use a clean cloth or cotton swab; do not use solvent-based cleaners.
Testing: Sealed connectors require regular testing of their sealing performance to ensure the protection is effective. Non-sealed connectors need to test the contact status of the connection to ensure a good connection. Testing tools such as pressure testers or multimeters can be used for these tests.
In addition, please pay attention to the following points when using:
• Proper installation: Follow the correct steps to install the connector to ensure proper operation.
• Avoid overloading: Connectors cannot withstand excessive current or voltage to avoid damage.
• Periodic inspection: Check the connector regularly to ensure normal operation.
In summary, sealed and unsealed connectors have different uses in automotive and industrial applications, with sealed connectors providing environmental protection while unsealed connectors are used in less demanding conditions. Connector selection depends on specific application requirements.