4TPE150MI Capacitors

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Tantalum polymer capacitors are gaining increasing attention of product engineers due to their many advantages over electrolytic capacitors. The 4TPE150MI is a surface mount, polymer tantalum capacitor manufactured by Nichicon. It has a capacitance of 150mF, a voltage rating of 4 volts, and offers a wide operating temperature range from -55 to +125 degrees Celsius. It is specifically designed to bypass high frequency noise and improve power delivery from voltage regulators, making it a popular choice for power management applications.

Application Field

The 4TPE150MI is suitable for use in a wide range of automotive, industrial, and medical applications due to its ability to provide high capacitance, reliable electrical performance, and a wide temperature range. Typical applications include:

• Power management for automotive and industrial motor controllers
• Switch Mode Power Supplies
• Uninterruptible Power Supplies
• Energy harvesting
• Battery charging
• DC-DC converters

The capacitor is also suitable for use in high temperature environments, such as those encountered in automotive and industrial applications. In addition, the 4TPE150MI is available in both RoHS and non-RoHS compliant versions, making it a suitable choice for many medical, industrial, and consumer applications.

Working Principle

The tantalum polymer capacitor works on the same basic principle as a traditional electrolytic capacitor. This is the storage of an electrical charge in a dielectric material. In the case of the 4TPE150MI, the dielectric is a film of tantalum polymer, which replaces the traditional liquid electrolyte solution. The tantalum film is highly efficient at storing a charge, with a low equivalent series resistance (ESR) and low leakage current. This makes it a suitable choice for use in power management applications.

The 4TPE150MI also uses a more advanced electrode structure compared to traditional electrolytic capacitors. The inner electrode is made from a conductive film which is deposited onto the surface of the tantalum polymer dielectric, while the outer electrode is formed from a solid metal plate. This structure provides superior performance compared to traditional electrolytic capacitors, with a higher capacitance and lower equivalent series resistance (ESR), as well as superior thermal and mechanical stability.

The 4TPE150MI capacitor also features a number of additional benefits compared to traditional electrolytic capacitors. It has a low profile and is suitable for use in wider temperature ranges. In addition, it is self-healing and has high capacitance retention at higher temperatures.

Conclusion

The 4TPE150MI tantalum polymer capacitor offers numerous advantages over traditional electrolytic capacitors. Its low profile, wide temperature range, low equivalent series resistance, high capacitance retention, and self-healing capabilities make it suitable for use in a wide range of automotive, industrial, and medical applications. Furthermore, it is available in both RoHS and non-RoHS compliant versions, making it a popular choice for many power management applications.

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