Introduction

In this technical review, we will analyze the performance of a KEMET Drum Core wirewound Inductor, part number SBCP-47HY4R7B, and compare it to a statistical benchmark that is formed from other components of the same value. Our objective is to assess the applicability of this component for electronic engineers in their circuit designs by examining the performance characteristics, such as inductance, series resistance, dissipation factor, and quality factor. The benchmark data will provide a heightened understanding of the efficacy of this particular Inductor.

• Pros:
  • Wide range of test frequencies
  • Impedance measurements at both 1 V and 10 V
  • Good inductance values compared to the benchmark data
• Cons:
  • Quality factor measurements are lower than the benchmark data in some areas
  • Inconsistencies in series resistance measurements, which may impact overall efficiency

Throughout the course of this review, we will investigate these pros and cons in detail while comparing the performance of the KEMET SBCP-47HY4R7B Inductor to the statistical benchmark data. Our goal is to provide engineers with the insights they need to make informed decisions regarding the integration of this Drum Core wirewound Inductor in their circuits.

Impedance

At low frequencies (5 to 100 Hz), the SBCP-47HY4R7B inductor's measured impedance displays a considerably lower value than the average of the statistical benchmark. For instance, at 5 Hz, the component's impedance is 59.25m Ohms compared to the average of 197m Ohms. Similarly, at 100 Hz, the observed impedance of the SBCP-47HY4R7B is 58.57m Ohms, a value significantly lower than the benchmark average of 273.4m Ohms. This lower impedance suggests that the component is better suited for low-frequency applications and can potentially offer superior performance.

As the frequency increases (500 Hz to 10 kHz), the impedance of the SBCP-47HY4R7B starts to converge towards the benchmark averages, yet it remains below these values for most of the frequency range. For example, at 5 kHz, the impedance of this inductor is 160m Ohms, which is lower than the benchmark average of 338.8m Ohms. However, at 10 kHz, the component's impedance comes closer to the benchmark average at 302.2m Ohms, while the benchmark average is 464.8m Ohms. This convergence implies that the performance difference between the inductor and the benchmark components decreases as the frequency rises.

In the higher frequency range (20 kHz to 1 MHz), the impedance performance of the SBCP-47HY4R7B continues to be lower than the benchmark averages. For instance, at 50 kHz, the inductor's impedance is 1.47 Ohms compared to the benchmark average of 1.562 Ohms. Moreover, at 1 MHz, the component's impedance measures 28.62 Ohms, which is slightly below the benchmark average of 28.31 Ohms. This performance throughout the higher frequency range further signifies the desirable properties of this component for applications that require lower impedance inductors.

Overall, the SBCP-47HY4R7B inductor's impedance performance is notably lower than the statistical benchmark averages across the entire frequency spectrum. This characteristic indicates a potentially improved applicability for certain applications where a lower impedance inductor is desired, thereby enabling more efficient designs and high-performance devices.

Inductance

The SBCP-47HY4R7B Inductor exhibits a mixed performance concerning inductance values when compared to the overall benchmark data. The component performs better at certain low frequencies but tends to fall short at higher frequency ranges. This performance variation suggests that the inductor may be more suitable for specific use cases and applications corresponding to its optimal operating range.

At 1 Volt, in frequency ranges of 5, 10, and 50Hz, the inductor outperforms the average inductance values. For example, at 5Hz, its inductance value is 7.504μH, which is well above the benchmark average of 15.29μH. However, at higher frequency ranges such as 200kHz, 450kHz, and 1MHz, the component struggles to reach the mean value, with inductance values of 4.633μH, 4.591μH, and 4.554μH, respectively, compared to the averages of 4.566μH, 4.531μH, and 4.498μH.

When tested at 10 Volts, the SBCP-47HY4R7B Inductor's inductance values significantly deviate from the statistical benchmark, particularly at lower frequencies such as 5Hz and 10Hz. The inductor presents an inductance of 83.59μH and 86.88μH at these frequencies, compared to the respective benchmark values of 1.023μH and 3.344μH. This deviation hints at a potential limitation or design trade-off when applying the inductor to specific applications.

On the other hand, when the frequency increases to 100Hz or higher, the inductor's performance becomes closer to the benchmark values, with inductance falling within the range of values seen in the overall statistical benchmark. This observation indicates that this component might be more suitable for applications operating at elevated frequencies where inductor performance closely aligns with the benchmark data. A detailed understanding of the frequency requirements is necessary when selecting an inductor to ensure optimal performance for a given application and ensure minimal deviation from desired inductance values.

Series Resistance

When analyzing the KEMET SBCP-47HY4R7B inductor at an input voltage of 1 Volt, we can observe that the Series Resistance across various test frequencies is generally lower than the average benchmark values, which indicates better performance. For example, at 5kHz, the Series Resistance is recorded at 59.11m Ohms for the SBCP-47HY4R7B, while the average of the benchmark is 260.9m Ohms. This significant difference in Series Resistance illustrates the superior performance of the SBCP-47HY4R7B inductor at this specific frequency.

Similarly, at 50kHz, the Series Resistance registers at an even lower value of 71.22m Ohms as compared to the benchmark's average value of 289.9m Ohms. The KEMET SBCP-47HY4R7B continues to exhibit improved performance at higher test frequencies as well. For instance, at 1MHz, the SBCP-47HY4R7B reaches a Series Resistance of 427.1m Ohms, while the benchmark's average sits at 1.041 Ohms. Keep in mind that a lower Series Resistance contributes to better energy efficiency, leading to lower heat generation and improved reliability.

Upon evaluating the SBCP-47HY4R7B inductor at a higher input voltage of 10 Volts, we observe a similar trend, indicating a consistently outstanding performance. The Series Resistance across the test frequencies is also lower than the corresponding benchmark values. For instance, at 10kHz, the SBCP-47HY4R7B's Series Resistance measures 68.85m Ohms compared to the benchmark's 267.2m Ohms. This pattern remains consistent throughout the various test frequencies examined, suggesting that the KEMET inductor consistently outperforms the benchmark not only at 1 Volt but also at 10 Volts, which is a testament to its efficient design and efficacy.

Dissipation Factor and Quality Factor

When assessing the KEMET SBCP-47HY4R7B's performance against benchmark data, it's essential to examine its Dissipation Factor (Df) and Quality Factor (Q) at varying frequencies (5 Hz to 1 MHz) and voltage levels (1V and 10V). These factors provide insight into the capacitor's efficiency, reliability, and ability to perform under varying conditions, making them vital considerations for informed design choices.

Upon analyzing the Quality Factor at 1V, an interesting trend is observed: it increases with the test frequency. The Quality Factor ranges from 0.03 at 50 Hz to 67 at 1 MHz. This performance denotes adequate to excellent high-Q characteristics at higher frequencies, signifying low energy loss and more efficient operation. Generally, a high Q factor is desirable for applications that require better signal-to-noise ratio, minimal signal distortion, and enhanced responsiveness.

Further examining the Quality Factor at 10V, similar results emerge, with the Q-factor rising in tandem with test frequency increases. The Q-factor ranges from 0.04 at 5 Hz to 54.42 at 1 MHz. This performance denotes good performance against the benchmark data, though it is slightly lower at the higher frequency ranges when tested at 1V, indicating a marginally lowered efficiency under higher voltage conditions.

Simultaneously, it is equally essential to consider the Dissipation Factor (Df), which represents the capacitor's power loss factor due to its internal impedance. The SBCP-47HY4R7B generally performs well at higher frequencies with a lower dissipation factor, suggesting reduced internal power losses and improved efficiency. Low Df values may also aid in improved reliability and lower heat generation in the component.

In conclusion, the analysis demonstrates that the SBCP-47HY4R7B possesses suitable characteristics for applications requiring precise, efficient, and low-maintenance performance, predominantly at higher frequencies. However, a comprehensive performance review should also include additional parameters such as capacitance, impedance, rated voltage, and temperature stability, among others, to ensure an accurate assessment of its suitability for specific applications.

Comparative Analysis

In this comparative analysis, we will evaluate the performance of the KEMET SBCP-47HY4R7B Inductor against the given statistical benchmark data of similar components in the same value range. The SBCP-47HY4R7B is a Drum Core Wirewound Inductor with a nominal value of 4.7μH, tolerance of ±20%, and a current rating of 2.1A. This Through-hole inductor is housed in a Radial, Vertical Cylinder (Open) package.

Based on the LCR measurements provided at both 1V and 10V, we can observe several performance aspects of this inductor in comparison to the statistical benchmark data. For low test frequencies (5 to 500Hz), the SBCP-47HY4R7B Inductor exhibits higher Impedance and Series Resistance values compared to the average benchmark values. However, at higher test frequencies (1kHz and above), the Impedance and Series Resistance values tend to be lower than or close to the average benchmark values, indicating a better performance of the inductor in higher frequency applications.

In terms of Quality Factor, the SBCP-47HY4R7B Inductor shows improved performance at higher test frequencies, achieving values that are either higher or comparable to the maximum benchmark values. This suggests that the inductor is quite efficient in minimizing energy loss.

When looking at the Series Inductance values, the SBCP-47HY4R7B Inductor maintains almost consistent values across a broad range of test frequencies. This could be particularly advantageous in applications where stability in inductance value is critical.

In conclusion, the KEMET SBCP-47HY4R7B Drum Core Wirewound Inductor exhibits a strong overall performance when compared to the statistical benchmark data, making it a suitable choice for electronics engineers seeking a versatile, efficient, and stable inductor for a variety of applications in higher frequency ranges.

Conclusion

In conclusion, KEMET's SBCP-47HY4R7B inductor, which is a drum core, wirewound component, exhibits characteristics that place it in different performance categories compared to the provided statistical benchmarks at both 1 Volt and 10 Volt measurements. The focus of this review is on the comparisons between the component data and the benchmark data in terms of impedance, quality factor, series resistance, and series inductance performance.

When analyzing the data at 1 Volt, the inductor's impedance values across frequencies range between 58.43m - 28.62 Ohms, most of which are far below average and max benchmark values, specifically at higher test frequencies. The component's quality factor indicates performances that are generally within the benchmark, and the SBCP-47HY4R7B has quality factor values higher than the average benchmark values in most cases, particularly at frequencies above 100 kHz. The series resistance values range from 58.9m - 427.1m Ohms, staying relatively consistent within this range, and below benchmark values at higher frequencies. The series inductance values vary from 4.7μ - 83.59μ, staying generally within or close to the benchmark average range.

At 10 Volts, the SBCP-47HY4R7B inductor's impedance values range from 67.05m to 29.08 Ohms, also mostly below benchmark values, especially at higher test frequencies. The component's quality factor values remain consistent with the benchmark, and again exceed the average benchmark values at frequencies above 100 kHz. The series resistance values range from 66.86m to 533m Ohms, which are relatively consistent within this range, staying below the benchmark at higher frequencies. The series inductance values range from 3.902μ to 86.88μ, with the values aligning within or close to the benchmark average range.

Overall, the KEMET SBCP-47HY4R7B inductor demonstrates competitive performance in terms of quality factor, series resistance, and series inductance values at the 1 Volt and 10 Volt measurements. However, the component falls short in impedance performance when compared to the provided benchmarks. Engineers should consider these factors when deciding if this particular inductor will be an optimal choice for their application.