What are the advantages of the connector?

Connector is a common connection medium for electronic engineers. The design and production process of the connector is more convenient and flexible, but also reduces production and maintenance costs. Here we look at the advantages of the connector.

1. The connector coating corrosion protection function. The first thing to consider in the production of connectors is corrosion protection. Most of the electronic connector contact shrapnel made of copper alloy, in the typical working environment of electrical connectors, such as oxidation, sulfurization, etc., prone to corrosion. In fact, contact coatings are used to isolate the contact shrapnel from the working environment to prevent copper corrosion. As an important function of corrosion protection, optimizing the interface is a consideration in selecting the appropriate contact coating material.

2. Connector coatings help to improve mechanical properties. The parameters related to mechanical properties are mainly factors that affect the durability or wear of the coating and the bonding force. These factors to be considered are two different views under the same basic effect, i.e., the sharing of cold welds at multi-point contact interfaces during relative motion. Important mechanical properties include the hardness, ductility and coefficient of friction of the coating material. All these properties depend on the inherent nature of the coating material and its processing.

3. Connector coatings help to improve the electrical performance. One of the main requirements for the electrical performance of the connector is to establish and maintain a stable connector impedance. For this purpose, a metallic contact interface is required to provide this inherent stability. The establishment of this contact interface requires a surface film that can be avoided or cracked during contact and mating.

4. The connector is characterized by the plating of precious metals. Precious metal coatings (such as gold, palladium and their alloys) are intrinsically free of the surface film to varying degrees. For these coatings, making metal contact at the interface is relatively simple, as it only requires the contact surface partner to move during the fit. In order to keep the contact interface impedance stable, connector design requires that the precious metal of the contact surface should remain constant to prevent the influence of external factors such as contaminants, base metal diffusion, and contact wear.

5. Let the connector take advantage of the properties of ordinary metal plating. Ordinary metal coatings, especially tin or tin alloy, are naturally covered with an oxide film. The role of tin contact coating is that this oxide layer is easily destroyed when mating, making it easy to establish metal contact. The requirements of the electrical connector design is to ensure that the oxide film will break when the connector is mated, and the contact interface will not be re-oxidized during the life of the electrical connector. Re-oxidation corrosion in wear corrosion is the main mechanism for the degradation of tin contact plating performance. Silver contact plating should be considered as common metal plating as far as possible, because it is susceptible to corrosion by sulfides and chlorides. Due to the classic formation of valves, nickel plating is usually considered as a common metal.