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Precautions for use of precision electronic components
Editor:Hangzhou Fuyang Zhongrui Precision Hardware Processing Co. LTDDate of issue:2019-07-18 16:49 Number of visits:
Because the MOS tube is a kind of precision electronic component, the current source continuously passes through the lifting during operation, so if there is a sudden current or voltage increase such as a surge, it may cause breakdown or burn, although some measures are taken during the production process. Protection, but can not fundamentally rule out the causes of such problems, so you should pay attention to the following issues when using:
1. Because in the safe use environment, the circuit design specification in the MOS tube manufacturer does not exceed the dissipated power of the MOS tube manufacturer, and the maximum drain voltage, the gate source voltage, and the maximum safe passing current must not exceed Work within each limit value.
2. Regardless of the type of MOS tube used, it must be connected to the circuit according to the installation requirements. The bias connection must comply with the polarity of the FET to prevent breakdown after voltage application, but be careful not to The FET is placed in a plastic box, and the moisture-proof effect should be ensured as much as possible, and the metal box is best stored.
3, MOS tube due to high input impedance, in the process of transportation or storage should be done well short-circuit protection of the lead, there are some unstable electromagnetic effects in the natural environment, too close to the transformer and other power equipment may generate electromagnetic induction Initiating gate breakdown, the use of the iron box during storage is not only beneficial to avoid the danger of breakdown, but also helps to improve the moisture-proof effect.