Introduction

The A750EK476M1EAAE040 is a Capacitor from the manufacturer KEMET. This aluminum-polymer capacitor with a nominal value of 47μF and a tolerance of ±20% is a part of the A750 Polymer series capacitors. The voltage rating of the capacitor is 25V and it features a through-hole mounting type in a radial can package. The primary objective of this technical review is to present a comprehensive, diligent, and trustworthy analysis of the performance of A750EK476M1EAAE040 capacitor by comparing it to a statistical benchmark of other capacitors with the same nominal value and aluminum-polymer composition.

• Performs above-average at low frequencies
• Low equivalent series resistance (ESR) at 1 Volt
• Wide frequency range tested
• Suitable for engineers assessing aluminum-polymer capacitors for their circuit designs

• Sub-optimal DF and Q factors
• High dissipation factor at high frequencies
• Not the most consistent performer

The objective is to assist engineers in evaluating capacitors for their circuits and designs. This comprehensive analysis will address various key aspects of the A750EK476M1EAAE040 Capacitor, such as capacitance, series resistance, dissipation factor and quality factor and a comparative analysis against the statistical benchmark of other components with the same value and composition. We will maintain an honest, credible, and genuine tone to provide accurate and unbiased information on how well the A750EK476M1EAAE040 Capacitor performs against the statistical benchmark data.

Impedance

The A750EK476M1EAAE040 Capacitor showcases varying degrees of performance across different frequencies when compared to benchmark data. To evaluate the capacitor's impedance more effectively, the measurements have been taken at two distinct voltage levels: 1 Volt and 10 Volts.

At 1 Volt, the capacitor demonstrates an impedance at low frequencies (5 Hz and 10 Hz) that is lower than the average benchmark (618.5 Ohms and 311.1 Ohms, respectively). However, these values remain within the acceptable range as set by the minimum and maximum impedance values. Interestingly, as the frequency increases, the impedance measurements gradually approach the benchmark average, indicating better performance at higher frequencies. For example, the capacitor's impedance at 100 kHz and 1 MHz is 38.38 mOhms and 79.63 mOhms, respectively, which is quite close to the benchmark averages of 319.4 mOhms and 286.2 mOhms, respectively.

At 10 Volts, the capacitor maintains a similar trend, exhibiting commendable performance at higher frequencies when compared to the statistical benchmark. The impedance values observed at 100 kHz and 1 MHz are 34.39 mOhms and 79.63 mOhms, while the impedance at a lower frequency of 5 Hz and 10 Hz is measured at 603.1 Ohms and 304.3 Ohms, respectively. Though data above 700 kHz is not available, the overall performance of the capacitor at 10 Volts aligns well with the observed trend at 1 Volt.

When examining the capacitor's performance across various frequencies, it is essential to determine its suitability for specific applications. For scenarios that require a capacitor with excellent performance at higher frequencies, the A750EK476M1EAAE040 proves to be an appropriate choice, as it offers impedance values in line with the benchmark averages. On the other hand, for applications demanding superior low-frequency performance, a more in-depth evaluation of the capacitor may be required to ensure it meets the desired specifications and requirements.

Capacitance

The A750EK476M1EAAE040 from KEMET displays varying levels of capacitive performance when compared to benchmark data for capacitors of the same value. The performance differences are particularly noticeable at different frequency ranges. A closer analysis of the component's capacitance characteristics allows engineers to determine its suitability for specific applications.

At a 1V test voltage, the capacitor demonstrates better capacitance than the average at frequencies below 150kHz. For example, at a 5kHz frequency, this component exhibits a capacitance value of 51.46μ, while the benchmark average is 49.2μ. This trend continues for test frequencies of 10kHz (51.16μ vs. 48.14μ), 50kHz (50.43μ vs. 45.91μ), and 100kHz (50.12μ vs. 44.55μ).

However, the A750EK476M1EAAE040 presents significantly higher than average capacitance performance levels for frequencies between 150kHz and 200kHz at 1V. Within this range, the component's capacitance measures considerably greater values, such as 72.02μ compared to the average of 33.11μ at 150kHz, and a distinct 182μ contrasted with the 68.56μ average at 200kHz. Beyond 200kHz, the benchmark data also displays large variances in capacitance values.

Similar trends can be seen when testing the component at 10V. The A750EK476M1EAAE040 retains better capacitance values compared to the benchmark averages for test frequencies under 150kHz. The higher-than-average performance is again noticeable between test frequencies of 150kHz to 200kHz, with the capacitor displaying a significant divergence compared to the benchmark average.

For electronics engineers evaluating this capacitor, the higher-than-average capacitance values in the lower frequency range could provide an advantage in applications where optimized capacitance performance is desired at these frequencies. However, it's important to approach the component's values at test frequencies between 150kHz and 200kHz with caution, due to the considerable performance deviation from the statistical benchmark. Understanding these performance characteristics will help engineers make informed decisions when selecting components for their designs.

Series Resistance

When evaluating the KEMET A750EK476M1EAAE040 Capacitor's series resistance performance, we compared its results under various test voltages and frequencies against a benchmark dataset. At a test voltage of 1 V and 5 Hz frequency, the capacitor exhibits a series resistance of 8.761 Ohms, which falls comfortably within the benchmark range of 8.597-282.8 Ohms. As the test frequency increases to 10 Hz, the measured series resistance decreases to 4.299 Ohms, remaining favorable in comparison to the benchmark range of 4.286-94.29 Ohms.

Moreover, the A750EK476M1EAAE040 Capacitor consistently demonstrates good performance within the benchmark dataset across a majority of test frequencies up to 50 kHz. However, it is essential to take into account that the capacitor's series resistance tends to be consistently higher than the benchmark dataset's average values for test frequencies ranging from 75 kHz to 1 MHz. Though the performance still falls within the dataset ranges, this may raise concerns for high-frequency applications. The upward trend of the capacitor's series resistance suggests that it might not be the most suitable choice for circuits requiring minimal resistance at higher test frequencies.

When raising the test voltage to 10 V, we observed that the capacitor's series resistance continues to fall within the benchmark dataset ranges. However, the higher measurements compared to the average benchmark values persist across all test frequencies. This behavior further suggests that the A750EK476M1EAAE040 Capacitor may not be the most suitable option for high-frequency applications or situations where low series resistance is of critical importance.

To conclude, the KEMET A750EK476M1EAAE040 Capacitor performs adequately when considering series resistance within the benchmark dataset ranges. However, its higher-than-average measurements at higher test frequencies indicate that it may not be the most optimal choice for applications requiring low series resistance. Engineers should carefully consider these factors when selecting components for their specific applications to ensure optimal performance and efficiency.

Dissipation Factor and Quality Factor

The A750EK476M1EAAE040 capacitor exhibits impressive performance in terms of its Dissipation Factor (Df) and Quality Factor (Q), which are fundamental electrical characteristics for assessing the efficiency of energy storage and power transfer in capacitors. A low Df value is desirable as it indicates minimal energy dissipation, while a high Q value reflects better capacitor performance.

At an applied voltage of 1 Volt, the A750EK476M1EAAE040 demonstrates a low Df, with values ranging from 0.014 to 4.643. Additionally, its Q values are commendable, ranging from 70.58 at 5Hz to 0.18 at 250kHz. These low Df and high Q values suggest superior performance and optimal power transfer capabilities for the capacitor under 1 Volt conditions.

When the measurements were taken at a higher voltage of 10 Volts, the A750EK476M1EAAE040's Df values exhibited a range of 0.008 at 5kHz to 3.168 at 200kHz. Furthermore, the Q values displayed a range of 125.76 at 5kHz to 0.32 at 200kHz. These results confirm the low energy dissipation and improved power transfer of the A750EK476M1EAAE040 under 10 Volt operating conditions. However, it is essential to consider the increase in the Df at 200kHz observed at 10 Volts compared to the values at 1 Volt. This increase could potentially have an impact on the overall performance of the capacitor in certain applications, particularly those involving high-frequency operations.

Comparative Analysis

Conclusion

After a thorough analysis of the KEMET A750EK476M1EAAE040 Capacitor's performance against the provided statistical benchmark data, we determined that this Aluminum-Polymer: Polymer capacitor exhibits a mixed performance when compared to its counterparts. In terms of Impedance, this capacitor performs similarly to the average impedances found in the benchmark, especially within the lower frequency range. Dissipation Factor values, on the other hand, tend to deviate from the benchmark data in the higher frequency range, presenting a higher value at 10 volts compared to 1 volt.

Regarding Quality Factor, the Capacitor exhibits a better performance in the lower frequency range, approaching the maximum values from the statistical benchmark. At higher frequencies, the quality factor declines, with values lower than the benchmark average and maximum. Furthermore, the Series Resistance values for the A750EK476M1EAAE040 coincides with the benchmark data, especially within the lower frequency range. On the other hand, Capacitance slightly deviates from the statistical benchmark data, particularly in the higher frequencies (200 kHz onwards).

Through the comparison and analysis of performance in key parameters, such as impedance, capacitance, series resistance, dissipation factor, and quality factor, we can conclude that the KEMET A750EK476M1EAAE040 capacitor offers a decent performance, although improvements could still be made in the areas of the higher frequency range. Degreed engineers may consider using this component in their products, taking into account its performance in relation to the statistical benchmarks.