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电解电容厂家告诉您贴片铝电解电容的使用注意事项
作者:红宝电容 来源:http://www.jnhongbao.com 日期:2020-09-12 08:52 浏览

  贴片铝电解电容器常用的有片状多层陶瓷电容器、高频圆柱状电容器、片状绦纶电容器、片状电解电容器、片状钽电解电容器、片状微调电容器等。在电路设计中应用广泛使用,在贴片状电容器使用中有哪些注意事项,电解电容厂家带您一探究竟。

  Chip aluminum electrolytic capacitors commonly used are multi-layer ceramic capacitor, high-frequency cylindrical capacitor, flake polyester capacitor, sheet electrolytic capacitor, tantalum electrolytic capacitor, chip trimming capacitor and so on. It is widely used in circuit design. What precautions should be taken in the use of SMC.

  (1)电容器的工作电压必须低于额定电压,不得超过额定电压使用。例如:工作电压为12V时,可选额定电压16~25V;工作电压为5v时,可选6~10V;工作电压为3.3V时,可选4~6V。

  The working voltage of the capacitor must be lower than the rated voltage and should not exceed the rated voltage. When the rated voltage is between 3V and 12V, the rated voltage is between 3V and 12V; for example, when the rated voltage is between 3V and 12V, the working voltage is between 3V and 12V; for example, the rated voltage is 6v-12v.

  另外,电容器的电容量还与耐压值有关。例如:片状钽电容耐压4~50V,0.1~4.7μF小容量电容有额定电压为50V的,而10pF以上、耐压值高于25V的就很少见到。因此,在进行电路设计时应引起注意。

  In addition, the capacitance of the capacitor is also related to the withstand voltage value. For example: sheet tantalum capacitor withstand voltage 4 ~ 50V, 0.1 ~ 4.7 μ f small capacity capacitor has rated voltage of 50V, but more than 10PF, withstand voltage value higher than 25V is rarely seen. Therefore, attention should be paid to the circuit design.

贴片铝电解电容

  (2)片状电容器可以大电压替代小电压。例如:电路需要一个10V的1UF电容,可以用16V的1UF电容替代。

  The chip capacitor can replace the small voltage with high voltage. For example: the circuit needs a 10V 1uF capacitor, which can be replaced by a 16V 1uF capacitor.

  (3)应合理地选择电容器精度及材料类别。市售的片状电容器的精度在0.01μF以下的,其精度可达J级(±5%);在0.01μF以上,则J级较少,以K级(±lO%)居多;在0.1μF以上,则以M级(±20%)为主。

  The accuracy and material type of capacitor should be selected reasonably. If the accuracy of the commercial chip capacitor is less than 0.01 μ F, the accuracy can reach class J (± 5%); if the accuracy is above 0.01 μ F, the accuracy of J class is less, and K class (± 10%) is the majority; if the accuracy is above 0.1 μ f, the accuracy is mainly of class m (± 20%).

  (4)市场上尺寸代码为0805片状电容器的容量规格(系列)最齐全,而0603一些的容量可能会缺货。在生产批量不太大时,为防止市场缺货而影响生产,可以将焊盘稍作延伸,使它能适用于0603及0805,避免造成因缺件而停产。

  The capacity specifications (Series) of chip capacitors with size code 0805 are the most complete on the market, while some capacities of 0603 may be out of stock. When the production batch is not too large, in order to prevent the market shortage from affecting the production, the pad can be extended slightly to make it suitable for 0603 and 0805, so as to avoid production stop due to lack of parts.

  (5)片状多层陶瓷电容器都是卷装的,型号在带盘上,而电容器上无任何标志。虽然可以用测量方法知道其容量,但很难区别材料类别的精度等级。因此在使用过程中,特别是手工装配时务必小心。

  The multi-layer ceramic capacitors are all packaged in coils, and the model is on the reel, but there is no mark on the capacitor. Although its capacity can be known by measurement, it is difficult to distinguish the accuracy level of material category. Therefore, in the process of use, especially manual assembly must be careful.

  (6)敞开式片状微调电容器不能用波峰焊,而封闭式片状微调电容器可用波峰焊。

  Wave soldering can't be used for open chip trimming capacitor, but wave soldering can be used for closed chip trimming capacitor.

  (7)片状电容器普遍采用多层结构,在使用时有些人采用烙铁手工焊接,此时一定要注意焊接速度,避免过热,造成基化端头因温差大而断裂,使容量下降。

  The multi-layer structure is widely used in sheet capacitors. Some people use soldering iron for manual welding. At this time, attention must be paid to the welding speed to avoid overheating, resulting in the breakage of the base end due to large temperature difference, resulting in the reduction of capacity.