Signal environmental performance of the connector

Environmental performance of the connector includes heat resistance, wet resistance, salt spray resistance, vibration and shock resistance, etc.

1.       Heat resistance

The highest working temperature is 200 ℃ for current connector (Except a few special connector),  and minimum temperature was 65 ℃.

Since the work of the connector, the current generates heat at the contact point, leading to the temperature rise, it is generally considered to be equal to the ambient temperature of the operating temperature plus the junction temperature.

In some specification clearly defines the connector rated operating current allowable maximum liters.

2.       Wet resistance

Intrusion of moisture will affect the connector insulation properties, and corrosion of metal parts.

Damp heat test condition is the relative humidity of 90% to 95% (based on product specification, up to 98%), the temperature of + 40 ± 20 ℃, test time by product regulations. Minimum of 96 hours

3.       Salt spray resistance

When the connector are work in an environment containing moisture and salt, the metal structure and the contact surface may produce galvanic corrosion, then affect the physical and electrical performance of the connectors.

To evaluate the tolerance of the electrical connector of this environment, we have the salt spray test.

The connector which is suspended in the test chamber at a controlled temperature, ejecting with a predetermined concentration of sodium chloride solution, forming a salt fog atmosphere, the exposure time is based on product specification, at least for 48 hours.

4.       Vibration and shock resistance

Vibration and shock resistance are important properties of the electrical connector.

Especially important in a particular application environment, such as aviation and aerospace, rail and road transport.

It is an important indicator in electrical testing. In the relevant test methods are clearly defined.

Impulse testing shall be provided that the peak acceleration, duration and impact pulse waveform, and electrical discontinuity of time.