The salt spray test of pogo pin connectors is an experimental method used to evaluate their corrosion resistance in environments containing moisture and salt. This test simulates the salt spray environment to detect the corrosion resistance of the connector metal structure and terminal plating to ensure its reliability and service life in harsh environments.
What is Salt Spray Testing?
The basic principle of salt spray test is to spray the sodium chloride solution into atomized form onto the connector surface to form a salt spray atmosphere. In such an environment, the metal surface will undergo an electrochemical corrosion process, resulting in the destruction of the metal oxide layer and the shedding of the plating. Salt spray test usually uses a sodium chloride solution of standard concentration and is carried out in a temperature-controlled test chamber. The exposure time can be 24 hours, 48 hours, 72 hours, 96 hours or even longer depending on specific requirements.
Factors Affecting Pogo Pin Salt Spray Test
The results of the salt spray test are affected by the raw materials and the thickness of the plating. For example, the thicker the gold coating, the better its salt spray resistance and can withstand the salt spray test for a longer time without corrosion. Typically, a 3-micron thick gold coating can meet the basic salt spray test requirements, while thicker coatings (such as 5-30 microns) can provide higher corrosion resistance.
Salt spray testing not only evaluates the physical and electrical properties of pogo pin connectors, but also helps optimize their design and manufacturing processes to improve their reliability and life in various complex environments. Therefore, salt spray testing is one of the important links in the quality control of pogo pin connectors.
In addition to the salt spray test, the pogo pin products produced by CFE have undergone rigorous environmental performance tests. The test items include salt spray test, constant temperature and humidity test, thermal shock test, high temperature life test, vibration test, resistance to solder heat test, gas corrosion test, hand sweat test, coating anti-electrolysis ability, etc., to ensure that each pogo pin connector product meets the high-quality application needs of each customer.
