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贴片铝电解电容的三大优势
作者:红宝电容 来源:http://www.jnhongbao.com 日期:2020-08-11 09:33 浏览

  贴片铝电解电容与传统的电解电容相比,它采用具有高导电度、高稳定性的导电高分子材料作为固态电解质,代替了传统铝电解电容器的电解液,它所采用的电解质电导率很高,再加上其独特的结构设计,大幅度改善传统液态铝电解电容器的缺点,展现出极为优异的特性。

  Compared with the traditional electrolytic capacitor, SMD aluminum electrolytic capacitor adopts conductive polymer material with high conductivity and high stability as solid electrolyte instead of the electrolyte of traditional aluminum electrolytic capacitor. Its electrolyte conductivity is very high, and its unique structure design greatly improves the shortcomings of traditional liquid aluminum electrolytic capacitor and shows excellent performance Characteristics of.

贴片铝电解电容.jpg

  (1)理想的高频低阻抗特性

  Ideal high frequency and low impedance characteristics

  高分子聚合物固体电解电容器的损耗极低,具有理想的高频低阻抗特性,所以广泛应用于退藕、滤波设计等电路中,效果理想,特别是高频滤波效果良好。

  Polymer solid electrolytic capacitor has very low loss and ideal high-frequency and low impedance characteristics, so it is widely used in decoupling, filter design and other circuits, the effect is ideal, especially the high-frequency filtering effect is good.

  在平滑电路输入叠加1MHz(峰一封值电压8V)高频干扰信号,用1只47UF的高分子聚合物固体电解电容器滤波,可使噪声降到仅有峰一峰电压30mv输出。要达到同样的滤波效果,需要并联4只1000UF的普通型液态铝电解电容器,或者并联接入3只100UF的钽电解电容器。

  Adding 1MHz (peak to peak voltage 8V) high frequency interference signal in the input of smoothing circuit and filtering with a 47uF polymer solid electrolytic capacitor, the noise can be reduced to 30mV peak to peak voltage only. In order to achieve the same filtering effect, it is necessary to connect 4 ordinary liquid aluminum electrolytic capacitors with 1000uf in parallel or three tantalum electrolytic capacitors with 100uF in parallel.

  (2)耐大纹波电流能力强

  Strong resistance to large ripple current

  高分子聚合物固体电解电容器具有耐大纹波电流的能力,适宜在开关电源电路中短时间内提供较大的电流。短时间内端电压下降明显,所以对外提供高频电流的能力很强,具备很好的瞬间响应特性。

  Polymer solid electrolytic capacitor has the ability to withstand large ripple current, which is suitable for providing large current in switching power supply circuit in a short time. In a short time, the terminal voltage drops obviously, so it has a strong ability to provide high-frequency current, and has a good transient response characteristics.

  (3)频率特性平坦和温度特性良好

  The frequency characteristic is flat and the temperature characteristic is good

  高分子聚合物固体电解电容器在0、1~10MHz频段内具有平坦的电容量——频率特性。它还具有优良的温度特性,一般温度从-55度变到105度,电容量仅改变-5%~+8%高分子聚合物固体铝电解电容器还具有长寿命、高可靠性。

  Polymer solid electrolytic capacitors have flat capacitance frequency characteristics in the frequency range of 0,1 ~ 10MHz. It also has excellent temperature characteristics. The general temperature changes from - 55 ℃ to 105 ℃, and the capacitance only changes from - 5% to + 8%.

  贴片铝电解电容主要应用于主板旁路电容、DC/DC变换器、小型大功率电源、电源退藕、高频噪声抑制电路及便携式电子设备等。高分子聚合物固体铝电解电容器由于使用铝和导电高分子聚合物材料,因此不会燃烧或冒烟,不会爆炸。

  It is mainly used in main board bypass capacitor, DC / DC converter, small power supply, power decoupling, high frequency noise suppression circuit and portable electronic equipment. High polymer solid aluminum electrolytic capacitors will not burn or smoke and will not explode due to the use of aluminum and conductive polymer materials.


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