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When introducing various types of thin film capacitors, we often hear that one of their advantages is the non inductive structure. The so-called "non inductance" means that the capacitor does not produce an "inductance" effect during operation. Some users want to know, are thin film capacitors all wound without inductance?

The correct answer is: the vast majority of thin film capacitors are non inductive capacitors, with only a few belonging to inductive capacitors. Below, we will introduce the common internal structures of thin film capacitors one by one.

1. Inductive thin film capacitors.

The so-called inductive capacitor uses an inductive winding method for its internal structure. Generally, aluminum foil is used as the electrode plate, and the lead out wire or strip is directly spot welded to the aluminum foil electrode during the winding process. Like CL11/CH11/CBB11, these belong to inductive thin film capacitors.

2. Non inductive thin film capacitors.

Uninductive capacitor refers to a capacitor that uses the non inductive winding method. Its electrode plates have foil type (such as CBB13) or metallized electrodes (such as CL21/CBB21), etc. After winding, this structure is sprayed with gold or pre welded on the end face, short circuiting the turns of the same electrode plate, so that the current flow path is along the width direction of the electrode plate rather than the length direction, shortening the current flow path and reducing the inductance and loss of the capacitor. The vast majority of thin film capacitors belong to non inductive thin film capacitors.

3. Stacked capacitors.

This is a new type of non inductive capacitor with superior performance and easy production automation. For example, CL23B/CL25, this type of production is difficult and expensive, and can only produce some small capacity capacitors, such as ultra small calibration capacitors.