* Question
| The three basic properties of the connector |
* Answer
| and the extraction force (the extraction force is also called the separation force), and the requirements of the two are different.Mechanical life is actually an indicator of durability, which is called mechanical operation in GB5095.It takes one insertion and one extraction as one cycle to judge whether the connector can complete its connection function (such as contact resistance value) after the specified insertion and removal cycle.1 Contact resistance High quality electrical connectors should have low and stable contact resistance.The contact resistance of the connector ranges from a few milliohms to tens of milliohms.2 Insulation resistance is an indicator of the insulation performance between electrical connector contacts and between the contacts and the casing, in the order of hundreds of megaohms to several gigaohms.The electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of the connector. The electromagnetic interference leakage attenuation is to evaluate the electromagnetic interference shielding effect of the connector, and is generally tested in the frequency range of 100 MHz to 10 GHz.Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signals, a new type of connector, namely high-speed signal connector, has appeared.
Correspondingly, in addition to characteristic impedance, some new electrical indicators have appeared in electrical performance., such as crosstalk,Since the current generates heat at the contact point when the connector is in operation, resulting in a temperature rise, it is generally considered that the operating temperature should be equal to the sum of the ambient temperature and the junction temperature rise.In some specifications, the maximum temperature rise allowed by the connector at rated operating current is specified.3 Salt spray connector When working in an environment containing moisture and salt, the metal structural parts and the surface treatment layer of the contact part may cause galvanic corrosion and affect the physical and electrical properties of the connector.In order to evaluate the ability of electrical connectors to withstand this environment, a salt spray test is specified.4 Vibration and shock Resistance to vibration and shock is an important performance of electrical connectors. It is especially important in special applications such as aerospace and aerospace, railway and road transportation. It is to verify the robustness of electrical connectors and reliable electrical contact.An important indicator of sexuality.There are clear regulations in the relevant test methods. |
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