Pressure testing and welding precautions

First, the withstand voltage test conditions: 1. Standard environmental conditions: temperature 25 ± 2 ℃, humidity <60%; 2.DC test: 1000V / S to a uniform test voltage boost, test time 1 ~ 5s, the charging current ≤50mA. Second, the high-voltage MLCC sample test storage capacitance Note 1. Packaging dismantled and the entire testing process, should wear white silk gloves, using bamboo or wood forceps, keep the work surface clean and dry, to avoid capacitance due to contamination sweat or other contaminants in the high-pressure test surface arcing. 2. The high-pressure test for safety should use a separate clamp the jig in contact with the capacitor portion before the test shall be washed with an organic solvent (such as ethanol), before use to ensure that no dirt and dried. 3. When the high-pressure test, the capacitance should not be the object of other low resistivity contacts in addition to the test fixture to avoid surface discharge miscarriage of justice. 4. Testing, "start" high-pressure test is completed, it should perform a discharge function according to the tester operating instructions. Otherwise, a short circuit capacitance contact with each other easily lead to failure. 5. Opened over the bag should be sealed and never where the desiccant that came out, storage and use of the environment pay attention to moisture.