In the face of so many kinds of power connectors on the market, find the right one for our electronic equipment is the most important. Suitable power connectors not only provide current transport for the equipment, but also for the interconnection of equipment to increase the reliability and stability, so we must choose the power connector after close consideration Oh, today the connector network to talk to you about how to choose the right power connector and equipment for interconnection?
Current Rating: The current rating is the most important criterion when selecting a power connector. It is expressed in amperes per circuit and is a measure of the amount of current that can pass through the paired terminals with a temperature rise of no more than 85°F (30°C) C) at an ambient temperature of 72°F (22°). This current level is then reduced or adjusted for the number of circuits in a given housing due to heat (temperature rise) from adjacent terminals.
Second, connector size or circuit density: With the trend toward smaller equipment sizes, power connector size is becoming increasingly important in the wire connector selection process. Circuit density is a relative measure of the number of circuits that a power connector can accommodate per square inch. It is relative, using this measure, you can objectively determine the space requirements or size of one connector series versus another.
Third, wire size: When selecting the appropriate power connector, wire size is an important criterion, especially in applications where the required current rating is close to the maximum rating of the selected connector series, and the mechanical strength of the wire is required for the application. In both cases, the heavier wire gauge should be selected.
Fourth, the rated operating voltage: most applications are within the 250V rating of standard wire connectors, such as Xinpeng's CH3.96 wire-to-board connector provides a rated current value of 5.0A AC/DC. Voltage ratings of 250V AC/DC are for both AC and DC voltages. Higher voltage ratings are typically obtained by completely enclosing the male and female terminals separately in the housing. Those with hooded housings and fully isolated contacts also provide protection for the metal terminals during assembly and handling of wire connectors.
Fifth, the shell locking type: the choice is suitable for the application of positive locking power connector type, preferably determined by the degree of stress on the mating power connector. With forced locking power connector system requires the operator to deactivate the locking device before the connector halves can be separated, while the passive locking system will allow the connector halves to disengage by simply separating the two halves with a moderate force. In high-vibration applications or when the wire or cable is subjected to axial loads, either by design or accident, should provide for positive locking power connectors.
Sixth, strain relief devices: strain relief devices or backshells for power connectors can be non-conductive strain relief housing provides additional security for the main criteria. If the terminal or wire due to mechanical overstress and removed from its position in the power connector shell, the strain relief can prevent "live" wire contact with other components or "neutral" conductive components.
Seven, housing and terminal materials and termination plating: materials and plating is usually one of the last major decisions. Most power connectors are made of nylon plastic. The flammability rating of nylon is typically 94V-0 to UL94V-2. The higher 94V-0 rating indicates that the nylon will extinguish faster (in the event of a fire) than 94V-2 nylon. 94V-0 rating does not infer a higher operating temperature rating, but rather a higher flame resistance. For most applications, 94V-2 material will suffice.
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