A Comparison of RF Inductors

Now that we’ve covered a general overview, the materials used, the importance of the Q factor in RF Inductors, typical applications, and the construction of the RF Inductor, our blog series continues with a comparison of these inductors.

Now we can compare the different streaming types of products to see how they stack up against one another. These products from our catalog have the same inductants, but different Qs. This is very representative of what happens with the construction even if the same inductance value has to be hit.

For the WE-KIs, we have a Q of 40, followed by the TCIs, which are deposited, on the surface of the ceramic. Finally, we have MKs which are the multilayer type. Generally, all three have very similar resonant frequency, but a significant difference is that the DPRs change dramatically. In the case of the thin film side, we have the highest resistance compared to 0.34Ohms for a KI. As you can imagine, this is in due part because the wire is much thicker in a wire wound than it would be in a thin film.

Inductance can be controlled much better with a thin film inductor, but then you suffer such as DTR. However, in the case of KI, it has a very low RDC, a very wide range of inductances, and it has a very high Q as well.

The tolerance for an inductor may not be as good and if you have a good matching impedance circuit, sometimes it’s important to have a very high tolerance. Therefore, you much place them on a valence and see what would be the most important parameter that you’re looking for in order to select an inductor.

Since the same traits are deposited on the surface of the ceramic, the thin film inductors that are sent out also lower the currents of some air to the multi-layer, or the wire wound. Therefore, this is a very representative comparison between these three materials.

Want to learn more? Stay tuned for more posts about, availability of models, tutorials, and general questions.

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