Introduction

An exhaustive examination was conducted of the DFE252010P-4R7M=P2 Inductor manufactured by Murata Electronics using intricate testing procedures. This Inductor boasts a nominal value of 4.7μH with a tolerance of ±20%. It has a composition of Drum Core Wirewound, is mounted using a Surface Mount technique, and is packaged in the 1008 (2520 Metric) size. Its key specifications include a current rating of 1.7A. The focus of this review is on making comparisons between the component data and the statistical benchmark data provided. The following pros and cons list was derived from the in-depth analysis.

• Pros:
• High Current Rating.
• Compatible with Surface Mount technique.

• Inconsistent inductance readings at different test voltage.
• Fluctuating Quality Factor
• Series Resistance variability at various frequencies.

This review will delve deeper into specific performance metrics including Inductance, Series Resistance, Dissipation Factor, and Quality Factor in relation to the DFE252010P-4R7M=P2 Inductor.

Impedance

In evaluating the DFE252010P-4R7M=P2 Inductor's impedance, it becomes clear that there is considerable deviation from the statistical benchmark, which is particularly noticeable at higher frequencies. For example, at 20 kHz, this Inductor exhibits an impedance of 627.3m Ohms at 1 Volt and 604.6m Ohms at 10 Volts. In contrast, the statistical benchmark presents an average impedance value of 733.5m Ohms. As the frequencies increase, the difference becomes even more pronounced. For instance, at 100 kHz, the DFE252010P-4R7M=P2 Inductor's impedance measures 2.919 Ohms at 1 Volt and 2.976 Ohms at 10 Volts, whereas the benchmark average is 2.987 Ohms.

Moreover, the DFE252010P-4R7M=P2 Inductor's impedance at lower frequencies also does not consistently match the statistical benchmark. At 1 kHz, the Inductor exhibits 234.9m Ohms impedance at 1 Volt and 242.9m Ohms at 10 Volts, compared to the benchmark average value of 262.9m Ohms. Similarly, at 50 Hz, the Inductor measures 232.6m Ohms at 1 Volt and 242.1m Ohms at 10 Volts, while the benchmark average is 279.9m Ohms. This disparity suggests that the DFE252010P-4R7M=P2 Inductor may demonstrate suboptimal impedance performance characteristics in comparison to the statistical benchmark.

When evaluating the DFE252010P-4R7M=P2 Inductor for specific applications, it is crucial for engineers to thoroughly examine its impedance performance characteristics. A meticulous comparison of these characteristics with the provided statistical benchmark is essential to make an informed decision regarding this component's suitability. Keep in mind that impedance is a vital factor in the overall performance of inductive components, as it directly affects the efficiency, ripple, and stability of circuits in which they are employed. A component with a substantially different impedance profile could lead to performance issues or, in some cases, even circuit failure, particularly when dealing with sensitive or high-frequency applications. Consequently, it is essential to weigh the importance of impedance deviations from the benchmark when considering the DFE252010P-4R7M=P2 Inductor for a specific design.

Inductance

Upon evaluating the inductor DFE252010P-4R7M=P2 from Murata Electronics, we will take a closer look at its inductance properties by analyzing its LCR measurements at 1V and 10V test voltages, respectively. The in-depth analysis will allow us to provide a knowledgeable and thorough understanding of the inductor's performance.

At a 1V test frequency, the average series inductance of the benchmark spanned from 15.29μH at 5Hz to 4.498μH at 1MHz. In comparison, the inductor DFE252010P-4R7M=P2 ranged from 13.66μH at 5Hz to 4.597μH at 1MHz. Within this context, it is important to emphasize that the inductor exhibits a lower inductance at lower frequencies, yet gradually approaches the average benchmark inductance value as the frequency increases. Although it does surpass the benchmark value to a small extent at higher frequencies, its overall performance adheres to the tolerance specification which is essential for maintaining a reliable design.

Moving on to the LCR measurements at 10V, we observe some notable fluctuations in the inductor's performance. The inductor displays exceptionally high inductance values at lower frequencies, significantly surpassing the benchmark values. Specifically, at 5Hz it measures 91.68μH and 88.4μH at the 10Hz test frequency. Nonetheless, as the frequency increases, the difference in inductance decreases, allowing the inductor's performance to align more closely with the benchmark. This ranges from 13.53μH at 50Hz to 4.679μH at 1MHz. Similar to the 1V evaluation, the inductor remains within the tolerance of ±20% across all tested frequencies. By examining the inductance performance of this component, engineers can ensure that the inductor meets the design requirements while considering its effects on circuit efficiency and overall stability.

Series Resistance

In this section, we perform a detailed and comprehensive evaluation of the Murata Electronics' Drum Core, Wirewound Inductor DFE252010P-4R7M=P2, with a primary focus on its series resistance. The component's data is thoroughly assessed in comparison to a well-established statistical benchmark formed from a variety of other components with the same value.

When meticulously examining the benchmarks at 1 Volt, it is evident that the minimum, average, and maximum series resistance values indicate that the DFE252010P-4R7M=P2 Inductor demonstrates resistance levels remarkably close to the average benchmark values, all the while remaining well within the specified limits of the minimum and maximum resistance for each test frequency. Particularly noteworthy is the stability of the Inductor's series resistance at low test frequencies (5Hz to 1kHz), where it remains fairly constant with values ranging from approximately 232.4mΩ to 233.1mΩ.

As we progress and incrementally increase the test frequency from 1 KHz to 1 MHz, a parallel trend can be observed between the component's resistance and the benchmark data, further emphasizing the DFE252010P-4R7M=P2's reliable performance. A more extensive examination of the series resistance values at 10 Volts reveals even more parallels. Although the resistance fluctuates within a slightly broader range, the underlying performance consistency of the DFE252010P-4R7M=P2 Inductor remains commendable as it stays close to the benchmark data.

Through this evaluation, we hope to provide valuable insights into the performance of the Murata Electronics' Drum Core, Wirewound Inductor DFE252010P-4R7M=P2 concerning its series resistance, aiding readers in understanding the intricacies of the component as well as its potential applicability in achieving their desired outcomes.

Dissipation Factor and Quality Factor

When analyzing the dissipation factor (Df) and quality factor (Q) of the Murata Electronics DFE252010P-4R7M=P2 Inductor, the technical results reveal that this particular component consistently demonstrates low dissipation and high quality factors. These characteristics are based on the LCR measurements taken at both 1 Volt and 10 Volts electrical inputs. For instance, at a 1 kHz frequency, the recorded Q values are 0.12 and 0.09 for 1 and 10 Volts, respectively. The Q values improve significantly at higher frequencies, such as 50 kHz (6.16 and 6.40) and 100 kHz (11.92 and 12.25 for 1 and 10 Volts, respectively). The notable enhancement in the quality factor as the frequency increases indicates an improved performance for the Inductor under such conditions.

Analysis of the available benchmark data demonstrates that the DFE252010P-4R7M=P2 Inductor maintains its high Q and low Df attributes even at frequencies beyond 1 MHz. For example, at 500 kHz, the component exhibits Q results of 36.48 and 31.22 for 1 Volt and 10 Volts testing conditions, respectively. Although it is crucial to note that there is a slight decrease in overall Q values at higher frequencies, the Inductor still performs exceptionally well compared to other similar-value Inductors based on the available benchmark data. This high-performance behavior is indicative of the Inductor's ability to provide a suitable level of quality and efficiency across a wide range of frequency scenarios, which is essential for many electronics applications.

Comparative Analysis

In a comprehensive review and analysis of the DFE252010P-4R7M=P2 Inductor from Murata Electronics, we compared its performance against a statistical benchmark formed from other 4.7μH components. The overall performance of this Drum Core, Wirewound inductor revealed distinctions in impedance, quality factor, series resistance, and series inductance.

At 1 Volt, the DFE252010P-4R7M=P2 demonstrates lower impedance at most of the test frequencies when compared to the statistical benchmark. However, it shows an increased impedance at higher frequency ranges such as 50k, 75k, and 100k.

In terms of quality factor, the inductor performs worse compared to the benchmark at lower test frequencies like 50 and 100 Hz. However, its quality factor tends to improve when it reaches higher test frequencies, surpassing statistical benchmarks from 200k onwards.

Series resistance for the DFE252010P-4R7M=P2 inductor is moderately lower compared to the statistical benchmark at 1 Volt across most test frequencies. The series inductance demonstrated by the component is overall lower in comparison to the benchmark, with some fluctuations at a couple of test frequencies. However, this becomes more consistent and closer to the Min and Avg. benchmark inductance at higher frequencies.

When the inductor is evaluated at 10 Volts, a similar trend is observed in impedance and quality factor performance. While the impedance is lower at the majority of the test frequencies, the quality factor registers weakened results at a lower range but displays better performance at higher frequencies.

Series resistance and series inductance maintain the same trend as observed at 1 Volt testing, exhibiting a moderate difference in series resistance compared to the benchmark data. However, the series inductance within the 10 Volts testing range showcases improvement, remaining relatively consistent across the test frequencies.

In conclusion, the performance of the Murata Electronics DFE252010P-4R7M=P2 Inductor holds noteworthy variations in comparison to the statistical benchmark. The inductor caters better to higher test frequencies, particularly in terms of quality factor and maintaining consistency for series inductance. This detailed analysis will provide valuable insights for electronics engineers evaluating this inductor for their designs.

Conclusion

In our comprehensive analysis of the Murata Electronics DFE252010P-4R7M=P2 Inductor, we compared its performance to a statistical benchmark formed from other components of the same value. Focusing on key parameters such as impedance, inductance, series resistance, dissipation factor, and quality factor, we have carefully assessed the part's suitability for engineer readers evaluating it for use in their circuits.

We observed that, at 1 Volt testing, the DFE252010P-4R7M=P2's series inductance readings were mostly within the average and maximum values of the statistical benchmark. However, series resistance and quality factor measurements were persistently lower than the benchmark averages throughout the frequency range, suggesting room for improvement for this Drum Core, Wirewound Inductor.

At higher testing voltages of 10 Volts, the inductor displayed similar patterns, with series inductance values comparable to the benchmark range but lacking in performance with regards to series resistance and quality factor. Although it produced slightly higher quality factor values than at 1 Volt testing across most frequency bands, the overall performance remains below average when compared to the available statistics.

Given these observations, it is crucial for engineers to take the lower series resistance and quality factor values into account when considering the DFE252010P-4R7M=P2 Inductor for their applications. While it may exhibit reasonable inductance measurements compared to the statistical benchmark, the underperformance in other considered parameters leaves room for improvement, especially for circuits that demand more stringent specifications.