T550B706K015AH4250

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Tantalum-polymer capacitors combine the features of a solid-state electrolytic capacitor and a polymeric capacitor. They provide high capacitance values for a relatively small footprint and have lower voltage ratings than their solid-state counterparts. Moreover, they are relatively low cost and long-lasting, making them suitable for high-volume applications.

The T550B706K015AH4250 from KEMET is a single-ended, non-polarized tantalum-polymer capacitor with a capacitance rating of 6µF, an operating voltage of 6.3V-DC, and an operating temperature range of -55°C to +125°C. It is constructed using sintered Ta2O5 (tantalum pentoxide) anode composed of ceramic electrodes, a polypropylene (PP) dielectric, and a solid-state electrolyte for reliable operation.

The capacitance of a tantalum-polymer capacitor is fully inversely proportional to its applied electric field. This is important in applications in which the capacitance varies significantly with voltage. The capacitor’s capacitance can be further maximized by ensuring the dielectric layer is adequately thick. Excessive thickness, however, could cause the dielectric to become more resistive and result in higher series resistances, thus leading to increased power loss.

The T550B706K015AH4250 is well suited for applications where high capacitance is needed in a small package and a low ESR (Equivalent Series Resistance) is desired. Typical applications include decoupling and filtering, ripple voltage reduction, and power supply hold-up purposes. It is also used in the industrial and medical markets, as well as in telecom, storage, and automotive electronics sectors.

The T550B706K015AH4250 capacitor is available in the company’s ‘J’ case, which measures 11.5mm in diameter, and has an overall length of 11.7mm. It is a through-hole design with a solderable wire connection that can be soldered to a PCB or other substrates. The capacitor has silver-plated leads for maximum solderability, and has a relatively short fatigue life of only 10,000 cycles.

The device is also rated for protection against moisture and corrosion, and it has a rated voltage (VR) of 5V. Furthermore, the capacitor has a repackaging seal and corrosion resistant nickel barrier layer which helps minimize corrosion and device damage in harsh environments. The total package weight is just 8.8g.

In conclusion, the T550B706K015AH4250 is an ideal choice for applications requiring a relatively high capacitance value in a very small footprint. The device is also rated for a wide operating temperature range and its several features, such as protection against moisture and corrosion, make it suitable for use in a variety of applications. Moreover, its relatively short fatigue life and solderable wire connections add to its versatility.

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