M551B347K030AH

Tantalum - Polymer Capacitors

The M551B347K030AH capacitor is a type of tantalum-polymer capacitor composed of a tantalum anode, a conductive polymer cathode and an electrolyte. They have become increasingly popular in the past few years due to their high capacitance, long life, and low leakage rates.

Tantalum-polymer capacitors are constructed much like tantalum capacitors, with a tantalum dielectric anode and a conductive polymer cathode. Unlike tantalum capacitors, tantalum-polymer capacitors can also offer much higher capacitance ranges and lower equivalent series resistances. As a result, these capacitors are often used in DC-DC converter designs, as they can minimize power dissipation and increase efficiency.

Application Field and Working Principle

The M551B347K030AH capacitor is widely used in high-voltage applications from 50VDC to 200VDC, such as automotive applications and deep cycle batteries. This type of capacitor ensures reliable performance and high temperature operating stability in harsh environments.

The working principle of the M551B347K030AH capacitor is based on the same principle as other tantalum-polymer capacitors. The tantalum anode is coated with an insulating dielectric oxide layer, which acts as a barrier between the anode and the conductive polymer cathode. The cathode itself is permeated with an electrolyte solution, which functions as a source of ions to form an electric double layer. When a voltage is applied to the M551B347K030AH capacitor, electrons are transferred through the dielectric layer, forming a charge on the cathode and a capacitance is then stored between the anode and the cathode.

The M551B347K030AH capacitor is a highly reliable and cost-effective solution for a number of applications, including automotive, consumer electronics, medical, military, and aerospace. Its robust construction and excellent electrical characteristics make it suitable for use in a wide range of devices and applications.

Advantages and Disadvantages

The main advantage of the M551B347K030AH capacitor is its high capacitance and long life. The dielectric layer offers exceptional stability and the electrode elements are highly efficient, allowing for long-term performance without any significant degradation in performance. Additionally, the capacitor is highly resistant to temperature cycling and other environmental conditions, making it suitable for use in a wide range of applications.

The main disadvantage of the M551B347K030AH capacitor is its relatively high cost compared to other types of capacitors. However, its high performance and long life make it an ideal choice for applications where reliability and cost are critical.