Introduction

In this technical review, we analyze the performance of the Rubycon Capacitor, part number 25YXF47MEFCT15X11, which is an Aluminum Electrolytic Capacitor. The component holds a nominal value of 47μF, has a tolerance of ±20%, and a voltage rating of 25V. It is designed for through-hole mounting and has a radial can package. The goal of this review is to enlighten engineers while evaluating this capacitor for use in their circuits and comparing its performance against a statistical benchmark formed by other components of identical value.

This Aluminum Electrolytic Capacitor will be assessed based on the following parameters:

• Capacitance
• Series Resistance
• Dissipation Factor and Quality Factor
• Comparative Analysis

The pros and cons of this Rubycon 25YXF47MEFCT15X11 capacitor based on our analysis:

Pros:

• Acceptable performance at low to mid-range frequencies
• Low impedance and series resistance for applications with low operating frequencies

Cons:

• Higher series resistance and dissipation factor at higher frequencies, making it less suitable for high-speed applications
• Considerable variation in capacitance values as the test frequency increases in both 1 Volt and 10 Volts LCR measurements

Further details on the measured results and comparative data analysis will be provided in the subsequent sections.

Impedance

In the lower frequency range (5 to 1k Hz) when the 25YXF47MEFCT15X11 capacitor is tested at 1V, impedance values are generally higher than the statistical benchmark average values across the same frequencies. For instance, at 5Hz, the capacitor has an impedance of 686.9Ω, which is slightly above the benchmark average of 656.9Ω. The impedance value of 25YXF47MEFCT15X11 surpasses the average consistently until it reaches the 1k Hz frequency, at which point its impedance value is 3.845Ω compared to the benchmark's average of 4.046Ω.

In the higher test frequency range (5k Hz to 1M Hz), the 25YXF47MEFCT15X11 capacitor demonstrates a consistent and significantly higher impedance value than the statistical benchmark. This can be observed when examining its impedance at 100k Hz (522.5mΩ), which is much higher than the statistical benchmark average value of 319.4mΩ. The same trend can be observed across other high test frequencies.

When testing at 10V, the 25YXF47MEFCT15X11 component exhibits a similar trend as the one observed at 1V measurement, with its impedance values consistently higher than the statistical benchmark averages across the entire test frequency range. For example, the impedance at 50k Hz is 576.1mΩ, while the benchmark average shows 344.1mΩ.

For engineers evaluating the 25YXF47MEFCT15X11 Aluminum Electrolytic Capacitor, it is crucial to consider its higher impedance values compared to the statistical benchmark, particularly in higher test frequency domains. This information is important when determining whether the capacitor is a suitable choice for a specific application, accounting for factors such as power loss, overall efficiency, and potential harmonic issues. Engineers must also consider how the increased impedance may affect the overall performance and stability of the electronic system in which the capacitor is integrated.

Capacitance

In this section, we examine and analyze the capacitance performance of the Rubycon 25YXF47MEFCT15X11 Capacitor, comparing the obtained data to a statistical benchmark generated from other components with the same value. The nominal capacitance value provided is 47μF, accompanied by a ±20% tolerance. This denotes that the capacitor in question is versatile and suitable for a wide array of electronic circuit applications.

Upon inspecting the capacitance values at 1 V, the Rubycon Capacitor delivers performance that is at or marginally below the average benchmark when analyzed across the frequency range of 5 Hz to 20 kHz, offering a capacitive range of 46.31μF to 35.62μF. It is crucial to highlight that between 50 kHz and 1 MHz, this Capacitor exhibits subpar performance compared to the benchmark. For example, at 50 kHz, the observed capacitance value is recorded as 28.79μF, which is notably lower than the average benchmark value of 31.64μF. On the other hand, the Rubycon Capacitor triumphs with exceptional performance within the high-frequency range of 150 kHz to 1 MHz, exceeding the maximum values in the benchmark. The displayed capacitance value at 1 MHz peaks at a remarkable 4.595mF, showcasing a high capacitance at these elevated frequencies.

When evaluating the LCR measurements at 10 V, the Rubycon Capacitor demonstrates a moderately above-average capacitance level across the frequency range of 5 Hz to approximately 20 kHz. Within this range, the capacitance values are from 47.51μF to 28.9μF. However, we notice a minor below-average result within the 50 kHz to 100 kHz span. Interestingly, this is followed by a substantial increase in capacitance in the high-frequency domain (100 kHz to 750 kHz). One noteworthy example comes at 750 kHz, as the Rubycon Capacitor reaches an impressive capacitance value of 79.2μF, compared to the maximum benchmark value of 118.6mF.

Thus, engineers evaluating the Rubycon Capacitor for compatibility with their circuits should take both the generally acceptable low-to-mid frequency range performance and the extraordinary high-frequency capacitance values into account. Bearing these factors in mind, this capacitor could be a valuable choice for an array of applications, especially those operating within high-frequency domains.

Series Resistance

In evaluating the Rubycon Aluminum Electrolytic Capacitor's series resistance (Part Number: 25YXF47MEFCT15X11), it becomes apparent that when compared to benchmark data, this capacitor displays increased series resistance values across most of the measured test frequencies. This critical performance parameter, however, should be carefully considered depending upon its intended application in various electronic circuits.

Notably, the 25YXF47MEFCT15X11 capacitor exhibits heightened series resistance values at lower test frequencies below 100 Hz, in comparison to the average benchmark values. Despite this, it is worth mentioning that the component shows relatively lower maximum resistance values at 5 Hz and 10 Hz test frequencies when compared to maximum benchmark data. The capacitor demonstrates improved performance at test frequencies of 500 Hz and above, as the observed series resistance is much closer to the minimum benchmark values at these higher test frequencies.

It is essential to highlight that a comprehensive comparison of the series resistance test data at 1 Volt and 10 Volts reveals only a marginal increase in series resistance across most test frequencies. This change, however, remains within acceptable limits and is not anticipated to profoundly impact the capacitor's overall performance.

In summary, throughout the majority of test conditions, the Rubycon 25YXF47MEFCT15X11 Aluminum Electrolytic Capacitor displays higher than average series resistance values, particularly at lower test frequencies. On the contrary, the capacitor's performance at higher test frequencies aligns more closely with the minimal benchmark range. Accordingly, when assessing this capacitor's suitability for specific electronic circuit designs, these performance characteristics should be critically considered and factored into the decision-making process.

Dissipation Factor and Quality Factor

The dissipation factor (Df) and quality factor (Q) are both crucial parameters when it comes to assessing the performance of capacitors like the Rubycon 25YXF47MEFCT15X11. When the performance metrics of this particular capacitor are measured at 1 Volt, the Df values range between 0.019 at a test frequency of 5 Hz and 6.995 at 100 kHz. The Q values, on the other hand, vary from 51.31 at 5 Hz to a low of 0.14 at 100 kHz.

This specific performance indicates a relatively low loss characteristic in the lower test frequency range, yielding higher Q values as a result. However, with an increase in test frequency towards the higher range, the Df also increases, causing the quality factor to drop accordingly.

When the Rubycon capacitor is tested at a higher voltage of 10 Volts, the Df values exhibit a different trend, ranging from 0.033 at 5 Hz to 9.710 at 200 kHz. In comparison to the 1 Volt measurements, the Df values for the 10 Volt measurements show slightly higher losses at lower frequencies, but display a decrease at higher frequencies. Simultaneously, the Q values range from 30.51 at 5 Hz to 0.10 at 200 kHz. It can be observed that these values are relatively lower than those collected during the 1 Volt measurements, especially within the lower frequency range.

A comparison of the performance of the Rubycon 25YXF47MEFCT15X11 capacitor against benchmark data reveals that the capacitor shows reasonable performance, particularly with respect to lower Df values in the lower frequency range. As test frequency increases, it's observed that the Df values rise, leading to a decrease in the quality factor. Engineers must factor in this relationship between Df and Q values when determining the appropriateness of this capacitor for particular applications. This necessitates a careful assessment of trade-offs between these performance parameters to ensure reliable and efficient functionality.

Comparative Analysis

Conclusion

In this technical review, we have analyzed the performance of the Aluminum Electrolytic Capacitor, part number 25YXF47MEFCT15X11, manufactured by Rubycon. We have compared its LCR measurements at 1 volt and 10 volts against a statistical benchmark for the capacitors with the same nominal value. Our findings indicate mixed results for the performance of this capacitor, depending on the test frequency.

At low test frequencies (5 Hz-200 kHz), the 25YXF47MEFCT15X11 performs relatively close to the statistical benchmark average, in terms of impedance, dissipation factor, and quality factor. However, as the test frequency increases (450 kHz-1 MHz), the capacitor shows significant deviation from the benchmark data. The impedance, series resistance, and dissipation factor are higher than the benchmark averages, while quality factor and series capacitance are lower. The exception is at 750 kHz and 1 MHz, where the series capacitance is notably higher than the average for similar components.

Conclusively, engineers evaluating this capacitor for use in their circuits should consider its performance in relation to the statistical benchmark data. Given the performance variations depending on the test frequency, this Rubycon Aluminum Electrolytic Capacitor may be more suitable for lower-frequency applications rather than at higher frequencies, where it deviates significantly from the benchmark. Engineers are advised to evaluate the specific requirements of their circuits before deciding if this capacitor is the optimal choice for their application.