Introduction

The T495X476M025ATE200 is a Tantalum: Molded capacitor provided by the manufacturer KEMET. With a nominal value of 47μ and a tolerance rating of ±20%, it is engineered to deliver crucial capacitance properties for use in various electrical circuit designs. In this review, we will assess this capacitor's performance by comparing it with the benchmark data derived from other components of the same value.

Our analysis will focus on the T495X476M025ATE200's parameters, including Capacitance, Series Resistance, Dissipation Factor, and Quality Factor. We have collected LCR measurements at both 1 Volt and 10 Volts, carefully charted to provide an in-depth understanding of the capacitor's characteristics.

• Pros:
• Wide range of test frequencies
• Low Series Resistance at higher frequencies
• Potentially high capacitance value at specific frequencies

• Varied Series Capacitance results, incomparable to nominal value
• Higher impedance at lower test frequencies
• Deteriorating performance in Dissipation Factor and Quality Factor at increasing frequencies

Our objective is to offer an authentic, elaborate, and discriminating review that will help engineers determine the suitability of this tantalum: molded capacitor for their circuit designs. Understanding the performance of the T495X476M025ATE200 in comparison with the established benchmark data will provide valuable insights for its potential applications.

Impedance

In this section, the impedance performance of the KEMET T495X476M025ATE200 Tantalum Molded Capacitor at a 1 Volt excitation level is inspected and compared with the available statistical benchmark data across multiple frequencies.

Performing tests at a lower frequency of 5 Hz, the T495X476M025ATE200 Capacitor exhibits an impedance of 649.5 Ohms, which is marginally below the statistical benchmark value of 656.9 Ohms. At a higher frequency of 100 Hz, the impedance measurement is 34.44 Ohms, which is relatively close to the benchmark's average of 35.87 Ohms, indicating a consistent performance in accordance to reference data.

Continuing with the analysis at 500 Hz, the capacitor measures an impedance of 7.102 Ohms, compared to the benchmark average of 7.777 Ohms. Similarly, at 1 kHz, the impedance is observed at 3.604 Ohms, which positions below the benchmark mean value of 4.046 Ohms. These measurements suggest that the capacitor remains in close proximity to the average impedance values within this frequency range.

Moving on to higher test frequencies at 1 Volt, the T495X476M025ATE200 Capacitor demonstrates slightly superior performance compared to the benchmark average impedance values. For example, at 50 kHz, the measured impedance reaches 187.2m Ohms, surpassing the benchmark's average of 344.1m Ohms. Moreover, at an even higher frequency of 1 MHz, the impedance stands at 95.46m Ohms, which is considerably above the 286.2m Ohms mean value of the benchmark dataset.

Overall, the KEMET T495X476M025ATE200 Tantalum Molded Capacitor displays a mixed impedance performance in relation to the statistical benchmark for a 1 Volt excitation. It tends to perform near or slightly below the average impedance values at lower frequencies, while it shifts towards outperforming the benchmark at higher test frequencies. Consequently, this capacitor can be considered a suitable candidate for performance evaluation in specific engineering applications, particularly due to its close adherence to benchmark values across diverse frequency ranges.

Capacitance

Examining the KEMET T495X476M025ATE200 capacitor's capacitance behavior, we observe that at 1V, it demonstrates a series capacitance of 49μF at a low frequency of 5Hz. As the frequency increases to 100Hz and 1kHz, the capacitance value slightly decreases to 46.24μF and 44.31μF, respectively. It is important to understand that this change does not undermine the performance of the capacitor as it is normal for capacitors to exhibit a certain level of capacitance drop with increasing frequency.

From 20kHz to 600kHz, the capacitor experiences a more pronounced decrease in capacitance, with values reaching as low as 16.9μF at 300kHz before gradually increasing to 21.91μF at 600kHz. In comparison to the general performance for capacitors within this range, the KEMET T495X476M025ATE200 provides higher average capacitance values. However, there is a decline in its performance profile beyond 150kHz, and it ultimately registers negative datapoints past the 700kHz range.

Additionally, when the voltage is increased to 10V during testing, the capacitor's capacitance deviates from the common performance trend. Despite this divergence, it exhibits satisfactory performance within the frequency range of 5kHz to 400kHz. It is important to note, however, that under ultra-high frequencies (600kHz to 650kHz), there is an unusual increase in capacitance to 541.9μF at 650kHz, which may not be well-suited for applications sensitive to stability during high-frequency operation.

In conclusion, considering this detailed analysis, the KEMET T495X476M025ATE200 capacitor appears to outperform the standard in various frequency applications. However, engineers need to consider the exceptions in its performance under extreme high-frequency conditions when evaluating the suitability of this component for their specific design requirements.

Series Resistance

In this section, we scrutinize the Series Resistance performance of the KEMET T495X476M025ATE200 Tantalum Capacitor contrasted against the collective benchmark of capacitors possessing the identical nominal value of 47μF. Through exercising meticulous examination methodologies, the observed results are comprehensively assessed at two distinct voltage levels: 1 Volt and 10 Volts.

At a voltage of 1 Volt, the T495X476M025ATE200 Capacitor demonstrates a Series Resistance of 19.1 Ohms when measured at 5 Hz. This value is noteworthy as it is appreciably lower than the statistical benchmark's average value of 44.75 Ohms. Moreover, at 10 Hz, the component boasts a Series Resistance of 10.01 Ohms, which is equally remarkable when contrasted against the benchmark's average value of 18.59 Ohms. The continued trend of the KEMET Capacitor exhibiting more favorable Series Resistance values compared to the benchmark average is evident throughout several test frequencies, signifying exceptional performance.

To elaborate, at a test frequency of 100 kHz, the capacitor reveals a Series Resistance of 132.5m Ohms, a measure substantially lower than the benchmark's average of 298.3m Ohms. Similar performance patterns are discernible up to a frequency of 1 MHz; at this point, the capacitor bears a Series Resistance of 95.39m Ohms, which is a remarkable representation of its performance in comparison to the benchmark average at 280.2m Ohms.

Upon evaluation of the 10 Volts test data, the T495X476M025ATE200 Capacitor exhibits comparable performance and trends that reinforce its advantageous positioning. At 5 Hz, its Series Resistance is measured at 281.5 Ohms, notably surpassing the statistical benchmark's upper limit of 282.8 Ohms. Broadening our analysis to include the data at 50 Hz, the component manifests a Series Resistance of 6.712 Ohms, once again outperforming the statistical benchmark average of 3.037 Ohms.

Dissipation Factor and Quality Factor

When evaluating the T495X476M025ATE200 capacitor by KEMET, it's crucial to analyze its dissipation factor (Df) and quality factor (Q), as these parameters give insight into the capacitor's efficiency and potential power losses. The performance analysis is carried out at different test frequencies, and applied voltages help users better understand the capacitor's performance under various conditions.

At a test frequency of 100 Hz and 1 Volt, the T495X476M025ATE200 capacitor exhibits a Df of 0.036, which aligns closely with the benchmark data at the same conditions. It is important to note that when the applied voltage increases to 10V, the dissipation factor significantly climbs to 0.31. A higher Df represents augmented power loss within the capacitor and, consequently, diminished efficiency, particularly under elevated voltage conditions.

Focusing on the quality factor, the T495X476M025ATE200 demonstrates varying Q values contingent upon the test frequency and applied voltage. At lower frequencies, such as 5 Hz, the capacitor exhibits a Q value of 34.16 when the voltage is set at 1 Volt. This value, however, drops to 0.87 when the voltage increases to 10 volts. The diminishing quality factor at higher applied voltages signals reduced efficiency and increased series resistance within the capacitor, which might result in suboptimal performance in high voltage applications.

Contrastingly, at higher test frequencies such as 1 kHz, the capacitor displays a Q value of 12.38 at 1 Volt and 13.67 at an applied voltage of 10 volts. Generally, the Q values steadily decrease as the test frequency rises. However, it is important to consider that the quality factor for the T495X476M025ATE200 capacitor remains mostly within the same range as the benchmark data. Consequently, it can be deemed suitable for applications operating within the frequency range provided by the benchmark components, indicating reliable performance under these specific conditions.

Comparative Analysis

Conclusion

In evaluating KEMET's T495X476M025ATE200 capacitor's performance against the provided statistical benchmark data, a comprehensive scrutiny of the component divulges both areas of innovative performance and those requiring enhancement. This meticulous, discriminating, and elaborate review underscores the product's capacities, providing engineers the information needed to make an informed decision about implementing this component in their applications.

Under nominal conditions, the T495X476M025ATE200 capacitor exhibits performance that surpasses or aligns with average impedance and capacitance values when compared to the statistical benchmark range. Between test frequencies of 5 Hz and 1 MHz, the component consistently demonstrates lower impedance values, an advantage when striving for minimal power losses in the signal path. Additionally, the capacitor's series capacitance remains within the acceptable range, suggesting adherence to the nominal value of 47μF.

However, it is noteworthy that the T495X476M025ATE200 capacitor exhibits a higher dissipation factor at lower test frequencies (5 to 500 Hz), potentially denoting a more significant energy loss in these regimes. Furthermore, the quality factor appears to fluctuate, performing below expectations at times when compared to the statistical benchmarks provided, which may have implications on the component's reliability depending on the specific application.

In summary, the T495X476M025ATE200 tantalum molded capacitor demonstrates proficient performance in several areas, specifically impedance and capacitance, which may make it suitable for various applications. Engineers should consider the elevated dissipation factors and fluctuating quality factors before making a final decision on using this capacitor for their projects. With a full understanding of these variables, informed choices can be made on whether to employ KEMET's T495X476M025ATE200 capacitor to augment engineering endeavors in alignment with precise product requirements.