B41231C9278M000

Introduction to B41231C9278M000 Aluminum Electrolytic Capacitors

The B41231C9278M000 are aluminum electrolytic capacitors from the EPCOS brand. These are part of the B43400 series, which use an enhanced CDR (Conductive Polymerized Dry Electrolyte) oxide technology to offer a higher stability of capacitance under temperature and voltage changes compared to conventional electrolytic capacitors. Other features include high ripple current capability, long life expectancy (up to 10 000 h) and low inductive cases. The B41231C9278M000 is typically used in applications where high-frequency switched-mode power supplies, and automotive electronics are involved.

Application Field and Working Principle of B41231C9278M000 Aluminum Electrolytic Capacitors

The B41231C9278M000 is suitable for a wide range of electronic applications, including motor control, uninterruptible power supplies (UPS), portable consumer electronics, high-frequency switched-mode power supplies (SMPS) and automotive electronics. As mentioned, these capacitors use a Conductive Polymerized Dry Electrolyte technology which dramatically improves both the stability of capacitance and efficiency of energy storage.

The electrolyte used in EPCOS’ B41231C9278M000 is a non-aqueous mixture of liquid and solid molecules, held separately from the aluminium plates in order to prevent corrosion. Since the electrolyte changes its chemical and physical properties in relation to temperature, the capacitance value of the device changes as well, making these capacitors suitable for temperature-dependent control systems in the automotive industry. In comparison, conventional electrolytic capacitors can have their capacitance decrease by up to 10% as the temperature increases.

When charged, the B41231C9278M000 develops a very high charge storage capability due to the high Reverse Voltage (VR) rating. This is why these capacitors can handle high ripple current loads and provide a higher efficiency of energy storage. Moreover, these capacitors offer a significantly longer life expectancy of up to 10 000 h, compared to conventional electrolytic capacitors.

Conclusion

The B41231C9278M000 are aluminum electrolytic capacitors from the EPCOS brand, suitable for a range of electronic applications. The main advantages of these capacitors are their high level of stability under temperature and voltage changes, their high ripple current capability, long life expectancy, and low inductive cases. Thanks to their Conductive Polymerized Dry Electrolyte technology, the B41231C9278M000 has a very high charge storage capacity, making them ideal for applications such as motor control, uninterruptible power supplies, portable consumer electronics, high-frequency switched-mode power supplies and automotive electronics.