Widely used in various electrical circuits, they play a role in connecting or disconnecting circuits. Improving the reliability of 2.4mm connectors is first and foremost the responsibility of the manufacturer. However, due to the wide variety of connectors and the wide range of applications, the correct selection of 2.4mm connectors is also an important aspect of improving connector reliability.
Here is the content list:
l Electrical parameters
l Rated current
l Contact resisitance
Electrical parameters
2.4mm Connectors are electromechanical components that connect electrical circuits. Therefore, the electrical parameters of the connector itself are the first issue to consider when selecting a connector.The rated voltage, also known as the operating voltage, depends mainly on the insulation material used in the 2.4mm connector and the size of the spacing between the contact pairs.
Some components or devices lower than their rated voltage, may not be able to complete their proper function. The rated voltage of the connector should in fact be understood as the maximum working voltage recommended by the manufacturer. In principle, the 2.4mm connector can work properly at voltages lower than the rated voltage.
Therefore, we need to be based on the connector voltage (electrical strength) indicators, in accordance with the use of environmental, and safety level requirements to reasonably choose the rated voltage. For example, the maximum withstands voltage of the 2.4mm connector is 750V. then in the process of use should be careful not to exceed 750V.
Rated Current
Rated current is also known as operating current. Same as the rated voltage, in the case of lower than the rated current, the 2.4mm connector can generally work properly.
The connector design process is through the thermal design of the connector to meet the rated current requirements, because in the contact pair with current flow, due to the existence of conductor resistance and contact resistance, the contact pair will heat up. When its heat exceeds a certain limit, it will destroy the insulation of the connector and form a softening of the surface coating of the contact pair, causing failure. Whether it is 2.4mm connectors or solderless connectors, all have their specific current ratings, and more attention should be paid during use.
Contact resistance
Contact resistance is the resistance generated by two contacting conductors at the contacting part. Two issues should be noted in the selection.
First, the contact resistance indicator of a 2.4mm connector is in fact the contact pair resistance, which includes the contact resistance and the contact pair conductor resistance. Usually, the conductor resistance is small, so the contact-to-conductor resistance is referred to as the contact resistance in many technical specifications. Second, in circuits connected to small signals, it is important to note the conditions under which the contact resistance indicator given is tested, because the contact surface will adhere to an oxide layer, oil, or other contaminants, and the surface of the two contacting parts will produce a film layer resistance. For the common 2.4mm connector on the market, for example, the insulation resistance should be greater than 3000MΩ. different 2.4mm connectors have different parameters.
The above discussed the selection method of connectors from the aspect of electrical parameters, but due to the wide variety of 2.4mm connectors, coupled with a wide range of applications, we must take into account the actual situation to select the best connection solution.
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