Introduction

The purpose of this review is to provide an extensive and intensive analysis of the C0402C105K9PAC7867 capacitor by KEMET, its characteristics, and how it performs in comparison to the statistical benchmark data. The key goal is to determine whether this capacitor is an optimal choice for engineers looking to incorporate it in their projects.

Pros:

• Wide range of test frequencies from 5 kHz to 1 MHz
• Generally low series resistance across test frequencies
• Stable capacitance in lower frequency ranges

Cons:

• Substantial deviation in capacitance in the high-frequency range from the nominal value at 1μ
• Some frequency ranges exhibit lower Quality Factor compared to the benchmark
• Slightly larger dissipation factor in several frequency ranges

Impedance

The impedance of the KEMET C0402C105K9PAC7867 capacitor was evaluated throughout a range of test frequencies and compared against the statistical benchmark data. Overall, the capacitor exhibits satisfactory performance with most of its values falling within the range defined by the benchmark data. This demonstrates its suitability for a variety of electronic applications.

At lower frequencies up to around 50 kHz, the KEMET capacitor shows slightly lower impedance performance compared to the minimum, average, and maximum values of the benchmark data. For example, at 5 kHz, the impedance of the C0402C105K9PAC7867 capacitor is recorded as 38.51 Ohms, while the benchmark average value sits at 38.38 Ohms, just marginally better. At 10 kHz, however, the capacitor's impedance of 21.35 Ohms outperforms the benchmark average of 20.47 Ohms. Consequently, the device's performance is still adequate at these lower frequencies.

As the test frequency increases above 50 kHz, the KEMET capacitor demonstrates better impedance performance, often exceeding the statistical benchmark averages. This trend continues up to 1 MHz, where the impedance measures at 286.1 mOhms and 295.8 mOhms for 1 Volt and 6.3 Volts respectively, remaining within the benchmark range. This indicates that the device is capable of maintaining stable impedance characteristics even at higher frequencies.

Considering the nominal value, tolerance, and composition, the specified performance expectations are met. The device delivers a satisfactory balance of impedance levels and stability as test frequencies increase. These insights reveal that engineers may find this capacitor a suitable choice when evaluating components for their circuit designs, particularly if they require reliable impedance performance in the mid to higher frequency range, offering flexibility and credibility for various design requirements.

Capacitance

This review focuses on the capacitance performance of KEMET's C0402C105K9PAC7867 capacitor, a Ceramic: X5R capacitor with a nominal value of 1μF and a tolerance of ±10%. The comparison is done against the statistical benchmark data for components in the same value range, at 1 Volt and 6.3 Volts respectively.

At 1 Volt, the C0402C105K9PAC7867 capacitor outperforms the benchmark average capacitance value at relatively lower test frequencies, from 5 Hz to 1 kHz. For instance, at 100 Hz, this capacitor has a capacitance value of 1.015μF, which is higher than the average value of 942.3nF. However, as the test frequency increases, the capacitance value of the component decreases and falls below the benchmark average values starting from 5 kHz onwards. For example, at 50 kHz, the capacitor's value of 618.2nF is significantly lower than the benchmark average value of 700.1nF.

A similar trend can be observed for the capacitor's performance at 6.3 Volts. At lower test frequencies from 5 Hz to 1 kHz, its capacitance values are slightly lower than the values observed at 1 Volt, but they are still higher than the corresponding averages in the benchmark data. It's worth noting the performance at 1 kHz, with a value of 858.5nF compared to the benchmark average of 916.6nF. As the frequency increases, the component's capacitance values drop, deviating more from the nominal value of 1μF. For example, at 20 kHz, its capacitance value is 944.6nF, which is higher than the 1 Volt's value of 674.8nF but still below the benchmark average of 740.5nF.

In summary, the KEMET C0402C105K9PAC7867 capacitor exhibits a strong capacitance performance at lower frequencies when compared to the benchmark data for components with a similar nominal capacitance value. Remember that capacitors, particularly ceramic capacitors, tend to have their capacitance values affected by both voltage and frequency. Therefore, when designing a circuit, it is essential to consider the possible variations in capacitance for the specific conditions in which the component will operate to ensure optimal performance.

Series Resistance

When comparing the series resistance data of the C0402C105K9PAC7867 capacitor against the statistical benchmark data at 1 Volt, a few discrepancies in its performance become evident. Notably, at 5 Hz, the component's series resistance measures at 2.224k Ohms, which exceeds the average benchmark resistance of 1.641k Ohms. Similarly, as we assess higher frequencies such as 50 Hz and 100 Hz, we can see that the series resistance of the component remains above the average benchmark data, revealing values of 244.5 Ohms and 123.5 Ohms, against the benchmark values of 171.3 Ohms and 87.92 Ohms, respectively.

As we move to higher frequencies, it becomes apparent that the series resistance of the C0402C105K9PAC7867 capacitor begins to converge closer to the statistical benchmark values. Examples of such convergence can be observed at 500 Hz, where the resistance measures at 24.18 Ohms compared to the average benchmark of 18.63 Ohms. Similarly, at 1 kHz, the component displays a series resistance of 12.06 Ohms, as opposed to the 9.566 Ohm benchmark.

When testing at 6.3 Volts, we continue to observe a similar trend in the series resistance values of the C0402C105K9PAC7867 capacitor. Throughout the entire frequency spectrum, the component maintains higher resistance values compared to the benchmark. While the performance does approach the average benchmark values at certain test frequencies, such as 1.195 Ohms at 10 kHz in comparison to the 863.5m Ohm benchmark, it is important to note that the overall series resistance of the capacitor does not quite reach the level of other components with the same value in this statistical benchmark. This indicates that the performance of C0402C105K9PAC7867 capacitor may not be optimal for applications requiring low series resistance, and an alternative component should be considered to fulfill such demands.

Dissipation Factor and Quality Factor

When examining the test frequency of the C0402C105K9PAC7867 capacitor, its performance becomes noticeably better when operating at higher voltages (6.3V). A review of the statistical benchmark data reveals that the dissipation factor (Df) ranges from 0.073 to 0.079 at a test voltage of 1V, while the quality factor (Q factor) ranges from 12.7 to 13.66. Under a 6.3V test voltage, the KEMET capacitor displays a decreased Df range from 0.048 to 0.078 and an increased Q factor range from 13.3 to 20.87. This observation indicates a potential advantage for applications that require higher test voltages, as lower Df values and higher Q factors can enable enhanced performance.

Furthermore, the C0402C105K9PAC7867 capacitor exhibits exceptional performance at increased test frequencies. When tested at a frequency of 50 kHz and a voltage of 6.3V, the Df measures at an impressive 0.046, while the Q factor reaches 21.52. Moving to a 100 kHz test frequency, the Df value further decreases to 0.012, and the Q factor significantly improves to 83.41. These results are noteworthy, as capacitors with low Df and high Q factor values are crucial for delivering efficient and optimal performance in various electronic applications. Operating at such desirable levels would potentially translate to a reduced loss of energy and improved power handling capabilities, making this capacitor a vital component in numerous areas of electronics engineering.

Comparative Analysis

Conclusion

In this technical review, we have analysed the performance of the KEMET C0402C105K9PAC7867 Capacitor - a surface mount component with a nominal value of 1μ and a tolerance of ±10%. This Ceramic:X5R capacitor comes in a 0402 (1005 Metric) package and has a voltage rating of 6.3 Volts.

Based on the LCR measurements taken at 1 Volt and 6.3 Volts, we have compared the KEMET capacitor's performance against a statistical benchmark formed from other components of the same value. In general, the C0402C105K9PAC7867 capacitor shows competitive performance with respect to the statistical benchmark.

The impedance values are within range when compared to the benchmark data, showing that the component performs as expected. At lower test frequencies (5 to 500 kHz), the component's dissipation factors remain relatively close to the average dissipation factors of the benchmark. However, at higher test frequencies (750 kHz to 1 MHz), the dissipation factors show some deviation from the benchmark, revealing a minor weakness in the performance at high frequencies.

When examining the quality factor values, the KEMET capacitor performs satisfactorily, with values ranging from slightly below average to considerably above average as compared to the benchmark data. Furthermore, the device's series resistance and series capacitance show consistent behavior across the entire measured frequency range.

In conclusion, the KEMET C0402C105K9PAC7867 capacitor is a reliable and competitive choice with overall performance in line with the statistical benchmark. This makes the component suitable for use in various engineering applications where a dependable, surface mount ceramic capacitor is required. Engineers should consider this capacitor for their products but be mindful of the slight deviation in dissipation factors at higher frequencies.