薄膜电容与电解电容的区别主要在于本身的组成材料和特点，另外还有过压承受能力方面、耐温能力方面、安全性方面以及成本等多方面进行综合阐述。
The difference between thin-film capacitor and electrolytic capacitor mainly lies in its own material and characteristics. In addition, the over-voltage bearing capacity, temperature resistance, safety and cost are comprehensively elaborated.
薄膜电容是由金属铝等金属箔的电极和塑料薄膜重叠卷绕而构成的，薄膜电容的特点是无极性、绝缘阻抗高、频率覆盖范围广等。电解电容则是以金属铝或钽作为正极，液体或固态电解质等电材料作为负极，和中间金属氧化膜电介质组成的，电解电容的特点是体积大、单位体积容量大等。
Film capacitor is composed of metal foil electrode and plastic film, which is characterized by non polarity, high insulation impedance and wide frequency coverage. Electrolytic capacitor is composed of aluminum or tantalum as positive electrode, liquid or solid electrolyte and other electrical materials as negative electrode, and intermediate metal oxide film dielectric. The characteristics of electrolytic capacitor are large volume, large capacity per unit volume, etc.
（1）过压承受能力方面：薄膜电容比电解电容具有更强的过压冲击承受能力。
In terms of over-voltage withstand capacity, the thin-film capacitor has a stronger ability to withstand the overvoltage impact than the electrolytic capacitor.
（2）耐温能力方面：薄膜电容的耐温范围-40℃~-70℃，而电解电容在低温下容易冷却，安全系数低。
In terms of temperature resistance, the temperature tolerance range of thin film capacitor is - 40 ℃ ~ - 70 ℃, while electrolytic capacitor is easy to cool at low temperature and has low safety factor.
（3）安全性方面：薄膜电容是无极性的，受环境影响小，而电解电容是有极性的，使用的过程中受环境的影响。
In terms of safety, the thin film capacitor is nonpolar and less affected by the environment, while the electrolytic capacitor is polar and affected by the environment in the process of use.
（4）成本方面：薄膜电容易于串并联，成本低，而电解电容存在爆炸的可能性，加大了成本。
In terms of cost, the thin film capacitor is easy to be connected in series and parallel, and the cost is low, while the possibility of explosion exists in the electrolytic capacitor, which increases the cost.
方面 | 电解电容（以铝电解电容） | 薄膜电容 |
寿命 | 几千小时 | 一般10W小时小时以上 |
误差 | 20% | 5%或10% |
体积（相同耐压与容量） | 大 | 小 |
价格（相同耐压与容量） | 便宜 | 较贵 |
性能特性（过压承受/耐温能力） | 弱 | 强 |
容量范围 | 可以达到很高容量 | 容量较小（10uF以下） |
极性 | 有 | 无 |
防爆设计 | 有 | 无 |
储存条件 | 1~2年 | 受环境影响小，不受限制 |
由此可见，不同的电路设计中就要选择不同的电容元器件，在高频和高脉冲的交流电路中、要求性能稳点安全的电路中、工业产品中用薄膜电容较有优势，而在大容量、直流电路、低频电路中，电解电容比较好。
It can be seen that different capacitor components should be selected in different circuit designs. In high frequency and high pulse AC circuits, circuits requiring stable point safety and industrial products, thin film capacitors have advantages, while electrolytic capacitors are better in large capacity, DC circuits and low frequency circuits.