With the development of electronic devices, many smart devices have
launched waterproof as a major buying point, and high-quality pogo pins are used
as connectors in smart devices. It has waterproof function, so how is its
waterproof function achieved? Woolen cloth? In fact, the waterproof of
high-quality pogo pins mainly depends on its powerful performance, so let's
follow the editor of Jingcheng Industry to understand why high-quality pogo pins
are waterproof.
1. High-temperature resistance of high-quality pogo pins: At present, the
working temperature of high-quality pogo pins is 200°C, and the low temperature
is -65°C. Since the current generates heat at the contact point when the
connection is working, resulting in a temperature rise, it is generally believed
that the operating temperature should be equal to the sum of the ambient
temperature and the temperature rise of the contact point. In some
specifications, the allowable temperature rise of the connector at the rated
operating current is clearly specified.
2. Moisture resistance of high-quality pogo pins: the intrusion of moisture
will affect the insulation performance of the connector and corrode metal parts.
The constant damp heat test conditions are relative humidity 90%~95%,
temperature +40±20℃, and the test time shall be at least 96 hours according to
the product regulations. The alternating damp heat test of high-quality pogo
pins is more severe.
3. Salt spray resistance of high-quality pogo pins: When high-quality pogo
pins work in an environment containing moisture and salt, galvanic corrosion may
occur on the surface treatment layers of their metal structures and contacts,
affecting the physical and electrical properties of the connector. performance.
To evaluate the ability of electrical connectors to withstand this environment,
the salt spray test is specified. It is to hang the connector in a
temperature-controlled test box, and spray the sodium chloride solution with the
specified concentration with compressed air to form a salt fog atmosphere. The
exposure time is specified by the product specification, at least 48 hours.
4. Vibration and shock resistance of high-quality pogo pins: Vibration and
shock resistance of high-quality pogo pins are important properties of
electrical connectors, which are particularly important in special application
environments such as aviation and aerospace, railway and road transportation. It
is an important indicator to test the robustness of the mechanical structure of
the electrical connector and the reliability of the electrical contact. There
are clear provisions in the relevant test methods. The shock test shall specify
the peak acceleration, duration and shock pulse shape, as well as the time of
interruption of electrical continuity.
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