Introduction

The Panasonic Electronic Components ECW-FE2W475K capacitor is a metallized film polypropylene (PP) capacitor with a nominal value of 4.7μF, voltage rating of 450 V, ±10% tolerance, and through-hole radial mounting package.

In our review, we will compare the performance of this capacitor against the statistical benchmark data formed from other components of the same value. Our analysis will be based on the provided LCR measurements at both 1 V and 10 V test frequencies, from which we will determine the capacitor's pros and cons.

• Pros:
  • Low dissipation factor
  • High quality factor
  • Stable capacitance across different test frequencies
• Cons:
  • Series resistance increases at higher test frequencies

Please note that each subsequent section of this review will provide detailed information on the following aspects: Capacitance, Series Resistance, Dissipation Factor and Quality Factor, and Comparative Analysis.

Impedance

In this section, we will analyze the impedance performance of the Panasonic Electronic Components' ECW-FE2W475K film capacitor in more detail. Our analysis will focus on comparing the observed impedance values at 1V and 10V test voltage conditions against the statistical benchmark data for film capacitors with similar specifications.

At a test frequency of 5 Hz, the ECW-FE2W475K presents an impedance value of 6.713k at the 1V test condition, which is slightly higher than the 6.293k average benchmark for similar components. When observing the impedance value at the 10V test condition, we can see that the value remains relatively consistent at 6.714k. As the test frequency is increased to 50 Hz, the component's impedance value experiences a reduction to 671.4 at the 1V test condition, which is slightly above the 638.5 average benchmark for film capacitors in this category. In a similar fashion, the impedance value at the 10V test condition is observed to be 671.2.

As the test frequency is gradually increased further, the difference between the impedance performance of the ECW-FE2W475K and the average benchmark narrows. At a test frequency of 100 Hz, the component exhibits an impedance value of 335.8 at the 1V test condition, compared to the average benchmark value of 321.6. This trend of the capacitor's impedance response being above the average benchmark values continues at higher frequencies and test voltages, but the gap between the two values diminishes.

However, it is interesting to note that there are slight deviations from the benchmark values at particular test frequencies, specifically within the 600k to 850k frequency range. At the 1V test condition and a frequency of 600k, the component has an impedance value of 16.47m, which is far lower than the average benchmark of 188.2m. For the 10V test condition, the impedance value starts at 12.33m at the 600k frequency, increases, and then drops to 35.51m at the 800k frequency.

In summary, the impedance performance of the ECW-FE2W475K film capacitor generally aligns with the statistical benchmark impedance trend, maintaining impedance values slightly above the average benchmarks in lower to mid-frequency range. However, it is essential for engineering professionals to be aware of the observed deviations from these benchmarks, particularly within the 600k to 850k frequency range, when assessing the suitability of this specific film capacitor for integration within their electronic circuits.

Capacitance

The Panasonic ECW-FE2W475K capacitor, a film capacitor with a metallized polypropylene dielectric, has a nominal value of 4.7μF and a tolerance of ±10%. This makes it suitable for various applications in electronic circuits, including filtering, energy storage, decoupling, and coupling. In this analysis, we will extensively examine the capacitance performance of this component, focusing on the LCR (inductance, capacitance, and resistance) measurements at 1 Volt and 10 Volts with varying test frequencies to provide engineers with valuable insights for their projects.

When tested at 1 Volt, the ECW-FE2W475K maintains its capacitance remarkably close to or within its nominal value across a wide range of test frequencies. Observing and comparing this capacitor's performance to benchmark data, it showcases exceptional stability in capacitance, frequently surpassing the average series capacitance values. Notably, at higher frequencies beyond 20kHz, the ECW-FE2W475K boasts substantially higher capacitance in comparison to the average benchmark. For instance, at the test frequency of 500kHz, the component's capacitance measures 15.48μ, a remarkable difference from the benchmark value of 5.209μ.

As we increase the voltage to 10 Volts, the performance of the ECW-FE2W475K remains relatively stable. It is noteworthy that this capacitor exhibits only minor deviations in capacitance when compared to the prior measurements taken at 1 Volt. The stabilization becomes particularly significant at higher frequencies, surpassing the benchmark once again. Between test frequencies of 200kHz and 1MHz, the ECW-FE2W475K's capacitance exceeds average benchmark values by a considerable margin. For example, at 300kHz, the capacitor's capacitance value measures at 6.708μ, a measure that significantly outperforms the benchmark value of 4.152μ.

These exceptional capacitance characteristics of the Panasonic ECW-FE2W475K capacitor should be taken into consideration when designing crucial applications in electronic circuits. The stable performance across a wide range of test frequencies and varying voltage levels demonstrates this component's high adaptability and reliability, making it a top contender for engineers when choosing capacitors for their projects.

Series Resistance

An in-depth analysis of the series resistance performance of the ECW-FE2W475K capacitor reveals various advantages over a statistical benchmark consisting of other components with the same capacitance value. One of the crucial aspects of capacitor performance is its series resistance, which helps determine many factors in electrical circuits, such as voltage handling, energy dissipation, and overall efficiency.

Upon examining the LCR measurements at 1 Volt, the ECW-FE2W475K capacitor shows lower series resistance across a majority of the tested frequencies, except for 20kHz and 100kHz. At these two frequency points, it exhibits slightly higher series resistance. However, the component demonstrates remarkably lower readings at 10, 50, 300, 600, 700, and 750kHz. This can be deemed highly advantageous in applications demanding minimal series resistance levels in the capacitor, leading to improved energy management within the circuitry.

When looking at the 10 Volts measurement data, the available information for the ECW-FE2W475K capacitor is limited in comparison to the benchmark data. Nevertheless, the provided data shows that the capacitor displays noticeably lower series resistance at 50kHz and 150kHz. At 100kHz, the series resistance is marginally higher, resulting in performance optimization for specific applications that require these resistance values. It should be noted that the absence of data at other frequencies hinders our capacity to make an accurate comparison of the capacitor's overall performance against the statistical benchmark.

Based on the available data, it is clear that the ECW-FE2W475K capacitor exhibits a generally favorable series resistance performance, particularly at the lower frequencies in the 1 Volt measurement. It is critical to note, however, that acquiring a more comprehensive dataset at 10 Volts across various frequencies would greatly contribute to a better understanding of the capacitor's overall performance in a wider range of operating conditions.

Dissipation Factor and Quality Factor

At 1 Volt, the capacitor exhibits an impressive dissipation factor (Df) with a remarkably low range of 0.000 to 0.001 across the 10 Hz to 1 kHz test frequency range. In the context of capacitors, lower dissipation factor values signal decreased power loss, ideal for efficient operation. Concurrently, the quality factor (Q) signifies high performance, ranging from 8937.64 at 10 Hz to 1830.21 at 1 kHz. When comparing these values to industry benchmarks, it is clear that this particular capacitor delivers strong performance in terms of both Df and Q.

When the test voltage is increased to 10 Volts, the capacitor continues to maintain a low dissipation factor, notably in the lower frequency ranges. Between 5 Hz and 200 kHz, Df values do not exceed 0.021, ensuring minimal power loss. However, at higher frequencies such as 550 kHz, the dissipation factor experiences a substantial increase, reaching a peak of 2.305. In tandem, at lower frequencies, the quality factor remains relatively high, with values ranging from 3770.04 at 10 Hz to 137.59 at 150 kHz. Conversely, higher frequencies, like 550 kHz, witness a significant decline in Q value, plummeting to a meager 0.45.

Through a comprehensive analysis of the dissipation factor and quality factor across varying test frequencies and voltage ratings, the capacitor demonstrates excellent performance when compared to the statistical benchmark data. The low Df values and high Q values indicate that this capacitor offers reliable and high-quality performance, particularly at lower frequencies. This evidence suggests that the capacitor would be a suitable choice for electronic engineers seeking to incorporate top-performing capacitors into their projects, ultimately resulting in efficient and dependable electronic devices.

Comparative Analysis

Conclusion

In conclusion, the Panasonic ECW-FE2W475K displays adequate performance when compared to the statistical benchmark data. In terms of impedance, the capacitor shows a range of values from 6.713k Ohms at 5 Hz down to around 59.4m Ohms at 1 MHz for LCR measurements at 1 Volt.

Regarding the quality factor, the capacitor exhibits impressive values, with a maximum quality factor of 8937.64 at a test frequency of 10 Hz. However, its performance is notably worse at higher frequencies. The series resistance values confirm this trend, indicating satisfactory performance at lower frequencies.

The capacitance value is found to be fairly consistent across various test frequencies, deviating only slightly from the nominal value of 4.7μ. This stability is beneficial for applications requiring consistent capacitance values. It is worth noting that the measurements at 10 Volts show only minor differences when compared to the 1 Volt measurements, implying a relatively stable performance under different voltage conditions.

Overall, the Panasonic ECW-FE2W475K serves as a reliable capacitor for applications requiring stable capacitance values, particularly at lower frequency ranges. However, for engineers with applications requiring good performance at higher frequencies, especially above 300 kHz, it may be necessary to explore alternative capacitors. While this capacitor might not be suitable for all circuit designs, it offers commendable performance in certain applications and environments.