T551B187K010AH4251

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Tantalum and polymer capacitors are ideal for applications that require long-term reliability, low-temperature operation, and low-capacitance values with stable characteristics. This article will discuss the T551B187K010AH4251 from Kemet Electronics Corporation, part of the Tantalum Polymer Capacitors product family, in terms of its applications and working principles.

Features of the T551B187K010AH4251

The T551B187K010AH4251 tantalum capacitor from KEMET is a poly capacitive that is designed for high ripple current, low resistance, and low ESR. It is designed on an AEC-Q200 qualified polymer composite material and an epoxy-coated anode design. It is constructed as a surface mount chip and has a temperature range of -55°C to +125°C and an operating voltage of 10V. This capacitor utilizes an electro-luminescent dielectric material which ensures high capacitance, low leakage, and extended life. Furthermore, it is designed to operate over a broad temperature range, providing a stable capacitance.

Applications of the T551B187K010AH4251

The T551B187K010AH4251 from Kemet has a wide range of applications due to its outstanding features. For example, its long-term reliability and low-temperature operation make it perfect for use in automotive electronic systems. Its low ESR and high ripple current characteristics make it ideal for use in power supplies where efficient power distribution is required with minimum losses. Additionally, its extended life capability makes it suitable for use in medical technology where reliable and safe components are essential.

Working Principle of the T551B187K010AH4251

Tantalum polymer capacitors, such as the T551B187K010AH4251, utilize an electrodeposited capacitive layer and a polymeric dielectric material between two metal electrodes. The dielectric material is known as Energy Cells and is composed of several layers of polymers. This combination of materials creates a low-loss capacitor with stable characteristics.

The T551B187K010AH4251 capacitor is designed to operate at a specific frequency and life span. Its ability to withstand ESR and ripple current is dependent upon its capacitance value, voltage rating, and dielectric material. It is also dependent on the tolerance rating and composition of the anode material.

The effective capacitance of the T551B187K010AH4251 also varies with frequency. At low frequencies, the total ESR is the sum of the ESR of each individual segment due to the inter-segment coupling. At high frequencies, however, the total ESR is lower than the sum of the individual ESRs corresponding to each segment. This phenomenon is known as Frequency Resonance and is an important consideration when choosing a capacitor for certain applications.

Conclusion

The T551B187K010AH4251 tantalum and polymer capacitor from Kemet Electronics Corporation is designed for applications that require low-capacitance values and reliable operation over a wide temperature range. The capacitor utilizes an electro-luminescent dielectric material which ensures high capacitance, low leakage, and excellent performance. It is suitable for applications in automotive electronics, power supplies, and medical technology. Its working principles involve the utilization of an electrodeposited capacitive layer and a polymeric dielectric material between two metal electrodes. The effective capacitance of the T551B187K010AH4251 also varies with frequency, resulting in a lower total ESR at high frequencies.

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