The operation of a connector will affect the function of the entire device, and a suitable electrical connector can bring twice the result with half the effort. So, how to choose a suitable electrical connector? We can consider the following related aspects.
1. Connector type.
The first thing to consider is what to connect and where to use these issues, which determine the type of industrial connector selected. The location of the connector (indoor, outdoor, corrosive environment, etc.) will affect whether to improve the air tightness of the aviation plug or add a shielding shell outside the insulator. The type of connector determines which terminal is used and how many conductive terminals are to be arranged. Of course, this also involves some references to terminal technology.
2. Electrical requirements.
When choosing an electrical connector, the electrical requirements of the product must be considered. What are the voltage and current requirements of the product, and whether the connector can be used in such electrical applications? These issues about electrical requirements need to be considered. In addition, we also need to consider some other electrical conditions: resistance, allowable resistance change, millivolt drop, maximum DA current value, maximum DA voltage value, inrush current value, characteristic impedance, VSWR (voltage standing wave ratio) , Insertion loss and EMI shielding efficiency.
3. Environmental requirements.
Temperature, humidity and other environmental conditions are determined by the location of the electrical connector, so the location and the expected environment should be considered. What is the shelf life and information about other relevant storage conditions. The description of the environment should also include requirements for shock and vibration, including requirements from shipping, and production environmental conditions such as welding temperature and welding cycle duration. Connectors of different manufacturers produce different effects in the same environment, so it is correct to use Qingda. The connector manufacturer said that the area where the highest temperature is generated is around the combined continuous current guided by the connector.
4. Mechanical performance requirements.
For the connector, what size and footprint are effective; what is the allowable dimensional tolerance; what is the insertion and withdrawal force of the terminal; what is the durability of the connector (the frequency of mating and mating) ? These factors are to be considered when choosing electrical connectors. For example, for printed circuit boards, it is important to determine the tolerance of the circuit board, which is the critical value of card edge connection and the feasibility of reaching the critical value. For low-power circuits, the plating and underlying materials must be specified in accordance with the signal standards and environmental levels.
Connector manufacturers can use approximately 25 testing institutions (specified specifications) as the source of all or part of their connector test specifications. Consideration must be given to the use of appropriate test specifications for specific applications, including internationally accepted conditions.
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