M12 Front lock face Plate Waterproof connector

M12 Front lock face Plate Waterproof Connector

What are the core properties of waterproof connectors?

The basic performance of waterproof circular connectors can be divided into three categories: one is the mechanical performance of waterproof connectors, the second is the electrical performance of waterproof connectors, the third is the environmental performance of waterproof connectors.

First, the mechanical properties of waterproof connectors: the mechanical properties of waterproof connectors can usually be divided into the following categories. ① vibration resistance; ② shock; ③ locking mode; ④ mechanical life; ⑤ positioning key; ⑥ plugging force.

Vibration and shock resistance is the most important mechanical properties of circular waterproof connectors, usually used in special environments, difficult, but extremely important, such as aerospace waterproof plugs, railways and road transport. In addition, with the rapid development of society and the rapid increase in the flight speed of aircraft or missiles, vibration and shock problems are becoming more and more serious, so these two properties of waterproof connectors are increasingly practical in reality.

Locking methods are used to prevent vibration-induced separation of waterproof connectors, such as adding safety fuses to threaded waterproof connectors and other safe and reliable remedial connections.

Essentially, mechanical life is an indicator of durability and an extremely important mechanical property.

The role of the locating key cannot be overlooked; it is the form of locating key construction chosen to prevent mis-insertion of the waterproof connector.

The insertion force is divided into two parts, namely the insertion force and the extraction force. In addition, the pull-out force is also known as the separation force. Their performance requirements differ from the environment in which they are used. Some regulations specifically limit the criteria for maximum insertion force and minimum separation force. The above shows that the insertion force must not be too high from the point of view of use, but that the separation force is the opposite. If the separation force is too small, the reliability of the waterproof connector contact will inevitably be affected.

Secondly, electrical performance is mainly divided into the following parts: ① contact resistance; ② insulation resistance; ③ current; ④ electrical strength resistance.

Of course, there are other electrical properties, such as electromagnetic interference leakage and attenuation. It is a special electrical performance used to assess the effectiveness of EMI shielding of waterproof connectors, which is usually kept in the range of 100mHz~10gHz.

In addition, for RF coaxial waterproof connectors, there are other electrical performance indicators, such as characteristic impedance, reflection coefficient, etc.

The third is the environmental performance: in the industry, the more common environmental performance including temperature resistance, humidity resistance, salt spray corrosion resistance, etc.

① temperature resistance: so far, the upper limit of the working temperature of waterproof connectors is 200 ℃, in addition to a few special high-temperature waterproof connectors, the lower limit of -65 ℃.

② Moisture resistance: Moisture resistance is the so-called moisture-proof. If moisture intrudes into the waterproof connector, it will have a great impact on the insulation performance of the waterproof connector and will corrode the internal metal parts of the waterproof connector.

③Resistant to salt spray corrosion.

Waterproof Circular Connector technical parameters

Waterproof connector linking method