Special capacitive environment for chip capacitors

The operation of the chip capacitor should be at an appropriate temperature, and when it reaches a certain temperature, it will burst or leak current, which is also a problem that we need to pay attention to in our work. In previous articles, we also have to explain to the humidity and air environment will affect the service life of the patch capacitance, especially in direct contact with oil or full of oil mist, full of hydrochloric acid organic gas (such as hydrogen sulfide, nitrite, chlorine, bromine gas, such as methyl bromide) environment, full of toxic alkaline gases such as ammonia, such as ultraviolet radiation or place. So we're going to talk a little bit about the chip capacitors and what kind of special circumstances are required.

1. External sleeve, if immersed in organic solution; After exposure to high temperature, the sleeve covering the surface of the capacitor may rupture. The external material of the chip capacitor is usually polyvinyl, but this sleeve is only used for marking purposes and not for insulation.

2. In special working environment, if the chip capacitor is used with high density halogen compounds and in the cleaning of PCB, it will gradually show corrosion. In this case, please contact us when it is used in the characteristic environment.

3. Adjust the hole spacing of PCB board according to the capacitor PIN spacing, and adjust the spacing of PCB board according to the capacitor PIN spacing (pay attention to the increase of short circuit, circuit breaking and leakage current, because of the gap between the hole spacing and PIN spacing, it may bear more pressure on the lead end)

4. Patch capacitance capacitor with pressure valve (1) when the capacitance coupled with reverse voltage on both ends or excessive forward voltage, capacitance internal pressure will increase, in order to prevent capacitor explosion, part of the capacitor is made very thin to have the function of the pressure valve, were once the capacitance as pressure valve is damaged, you need to change the capacitance, can't be restore damaged because of the pressure valve. 2. When you use a capacitor with the function of pressure valve, make sure that there is enough space above the pressure valve to prevent interference with the use of electrolytic capacitor on the two-layer plate.