Three basic performance of Connectors

The basic performance of Connectors will be divided into 3 categories: mechanical performance, electrical performance, and environmental performance. Another necessary mechanical property is that the mechanical lifetime of Connectors. Mechanical life is AN indicator of sturdiness, that is named mechanical operation within the nationa

l normal GB5095. It takes one insertion and one withdrawal as a cycle, and whether or not the instrumentation will unremarkably complete its affiliation operate (such as contact resistance value) once the desired insertion and removal cycle is employed because of the judgment basis. Next, let's take a look at the three basic properties of Connectors in detail. Here are some answers.

Here is the content list:

l Mechanical behavior

l Electrical performance

l Environmental performance

Mechanical behavior

Mechanical performance is so much because the affiliation operates cares, the insertion and extraction force is a vital mechanical performance. Insertion and extraction force is split into insertion force and extraction force (extraction force is additionally referred to as separation force), the necessities of the 2 square measure completely different. There square measure provisions for optimum insertion force and minimum separation force within the relevant standards, which shows that from the purpose of reading of use, the insertion force ought to be small (there are structures with low insertion force LIF and no insertion force ZIF), and if the separation force is too small. It will affect the reliability of the contact. The insertion and extraction force and a mechanical lifetime of Connectors square measure associated with the contact structure (positive pressure), the coating quality of the contact half (the slippery friction coefficient), and therefore the dimensional accuracy of the contact arrangement (alignment).

Electrical performance

The main electrical properties of Connectors embrace contact resistance, insulation resistance, and stuff strength. High-quality Connectors ought to have low and stable contact resistance. The contact resistance of Connectors ranges from a couple of milliohms to tens of milliohms. Insulation resistance is a measure of the insulation performance between the contacts of Connectors and between the contacts and the shell, and its magnitude ranges from hundreds of megohms to thousands of megohms. Dielectric strength, or withstand voltage, dielectric withstand voltage, is the ability to withstand the rated test voltage between the contacts of Connectors or between the contacts and the shell.

Environmental performance

Temperature resistance

At present, the utmost operating temperature of Connectors is 200°C (except for a couple of high-temperature special connectors), and therefore the minimum temperature is -65°C. Once the instrumentation is functioning, the present generates heat at the contact purpose, which results in a temperature rise. Therefore, it's typically believed that the operating temperature ought to be up to the total of the close temperature and therefore the temperature rise of the contact purpose. In some specifications, the utmost temperature rise allowed by the instrumentation below the rated operational current is such that.

Humidity resistance

The intrusion of wetness can affect the insulation performance of Connectors and rust metal elements. Constant damp heat test conditions are relative humidity 90%~95% (according to product specifications, up to 98%), temperature +40±20°C, test time according to product specifications, at least 96 hours, alternating damp heat test is more stringent.

Salt spray resistance

When Connectors work in an environment containing moisture and salt, the surface treatment layers of their metal structures and contacts may produce galvanic corrosion, which affects the physical and electrical properties of Connectors. To gauge, the flexibility of electrical connectors to face up to these surroundings, a salt spray take a look at is such that. It hangs the instrumentation in a very temperature-controlled take a look at the box and sprays it with compressed gas with a such that concentration of common salt answer to make a salt spray atmosphere. The exposure time is such that by the merchandise specification and is a minimum of forty-eight hours.

Vibration and shock

It's significantly necessary for special application environments like aviation and region, railway, and road transportation. It is an important index for testing the robustness of the electrical Connector's mechanical structure and electrical contact reliability. There square measure clear laws within the relevant take a look at strategies. In the shock test, the peak acceleration, duration, and shock pulse waveform, as well as the time for the electrical continuity to be interrupted, shall be specified.

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