Five aspects of the connector's environmental performance

We don't know how much you know about the environmental performance of the connector. In the following, Konnra Electronics engineers will focus on the environmental performance of the connector, mainly from five aspects: temperature resistance, moisture resistance, salt spray resistance, vibration resistance and impact resistance. For you to introduce, let's take a look at it.
Konnra Electronics engineers pointed out that there are five main aspects of common connector environmental performance, as follows:
3.0 mm wire to board connectors
1.Temperature resistant. The current maximum operating temperature of the connector is 200oC (except for a few high temperature special connectors) and the minimum temperature is -65oC. 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. In some specifications, the maximum temperature rise allowed by the connector at rated operating current is specified.
2.Resistant to moisture. Intrusion of moisture can affect the insulation properties of the connector and rust metal parts. The constant damp heat test conditions are relative humidity of 90% "95% (up to 98% according to product specifications), temperature of +40 ± 20oC, and test time of at least 96h according to product specifications. The alternating damp heat test is more stringent.
3.Salt spray resistance. When the connector is operated in an environment containing moisture and salt, the metal structural member and the surface treatment layer of the contact member 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. It suspends the connector in a temperature-controlled test chamber and sprays it with compressed air at a specified concentration of sodium chloride solution to form a salt spray atmosphere. The exposure time is specified by the product specification for at least 48 hours.
4.Resistant to vibration and shock. Vibration and shock resistance are important properties of electrical connectors. They are especially important in special applications such as aerospace and aerospace, railway and road transportation. They are important indicators for verifying the robustness and electrical contact reliability of electrical connectors. . There are clear regulations in the relevant test methods. The peak acceleration, duration and shock pulse waveform and the time of electrical continuity interruption should be specified in the impact test.
5.Other environmental performance. Other environmental properties of the electrical connector are also sealed (air leakage, liquid pressure), liquid impregnation (resistant to specific liquids), and low air pressure, depending on the application requirements.



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