What to look for regarding connector options?

Connector (CONNECTOR) also known as domestic plugs, plugs and sockets. Connector is a kind of electrical or optical signals and mechanical force by means of the role of the circuit or optical channel to connect, disconnect or convert the function of the element, used as a device, components, equipment, systems, electrical or optical signals between the connection, transmission of signals or electromagnetic energy, and to maintain the system and the system does not occur between the signal distortion and energy loss of change. Where the need for photoelectric signal connection are to use photoelectric connectors, connectors as the composition of the entire circuit system electrical connection necessary one of the basic components, has been widely used in aviation, aerospace, military equipment, communications, computers, automobiles, industry, household appliances and other fields.

-I. What to look for regarding connector options?

1. Carrying capacity: In the selection of connectors to go power signals for the connector's carrying capacity is more concerned about the use of derating design, while paying attention to the insulating voltage between the pins. 2. structure size: the connector's external dimensions are very important in the products connected to have a certain space limitations, especially on the connector of the single board, can not interfere with other components. According to the use of space, installation parts to choose the appropriate installation (installation of front and rear installation, installation and fixing methods such as rivets, screws, card ring or the connector itself, quick locking pins, etc.) and the shape (straight, curved, T-type, round, square). 3. impedance matching: some signals have impedance requirements, especially RF signals, the requirements for impedance matching is more stringent, the impedance does not match the signal will cause signal reflection, thus affecting signal transmission. Impedance matching: Some signals have impedance requirements, especially RF signals, the impedance matching requirements are more stringent. General signal transmission on the connector impedance has no special requirements. 4. shielding: with the development of communication products, EMC is more and more attention, the choice of the connector needs to have a metal shell, at the same time the cable needs to have a shielding layer, the shielding layer should be connected with the connector's metal shell, to achieve the effect of shielding, but also can be used in injection molding methods, the plug part of the copper wrapped in copper skin, the shielding layer of the cable and the copper skin soldered together. 5. 5. anti-wrong plug: anti-wrong plug has two aspects: on the one hand, the connector itself, the connector itself rotates 180 degrees, misalignment error connection leads to signal misconnection, at this time need to pay attention to as far as possible to choose the anti-wrong plug connector, or by adjusting the relative position of the connector relationship to make the assembly; on the other hand, in order to reduce the type of material considerations, several signals are used in the same connector, at this time there may be a plug into B plug to go up to the connector. plug into the B plug up, this time it is necessary to pay attention to, if such a situation will lead to serious consequences, must be A, B interface selection for different types of sockets. 6. Reliability: the connector is used to connect the signal, so the connection part to be reliable (for example, the surface contact to be preferred over the point of contact, pinhole type to be preferred over the leaf spring type, etc.). 7. universality: in the process of selecting connectors to choose as far as possible, especially between the same series of products. Common objects, especially between the same series of products, the choice of connectors has a strong generality, reduce the type of material, increase the number of cost reduction, while reducing the risk of supply. 8. use of the environment: the connector is used outdoors, indoors, high temperature, high humidity, salt spray, mold, cold and other environments, the connector has special requirements. 9. locking function: in order to stop the connector with the time of falling off, to ensure good contact, the connector needs to have a locking function to ensure good contact. Safeguard good contact, the need for connectors with a locking function. 10. insertion and extraction frequency: connector insertion and extraction have a certain life expectancy, insertion and extraction times to reach the limit, the connector's performance will decline, some signaling interfaces need to be frequently inserted and extracted when selecting connectors should pay more attention to the number of connectors to be inserted and extracted. 11. charged to take into account: according to the often charged with or without the choice of pin-type or hole-type connectors.

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