Knowles Precision Devices

  1. Filter Basics Part 5: Lumped Element and Distributed Element Filter Construction 5/27/2022

    Part 5 of Knowles' series dives into more detail on lumped element and distributed element filter construction techniques and when each option is most appropriate to use based on your application.

  2. A Guide To Snubber Capacitor Selection For SiC-Based Switching Converters 5/21/2022

    Most converter circuits include semiconductors and switches made of silicon carbide (SiC) instead of plain silicon (Si). Here, Knowles dives into the advantages of using snubber circuits to protect SiC-based converters and discusses how to further increase efficiencies by focusing on capacitor selection.

  3. Dual-Use Legislation And MLCCs 5/4/2022

    This application note explores the details of dual-use trade controls, how to determine if your MLCCs could fall under this regulation, and what you need to do to stay in compliance.

  4. Filter Basics Part 3: Five Key Filter Specifications To Understand 5/3/2022

    In part 3 of this series, Knowles aims to help simplify filter selection by providing an overview and reference point for five of the most commonly discussed filter technology specifications.

  5. Filter Basics Part 4: Key Filter Types And Technologies 4/28/2022

    In this new Filter Basics Series, Knowles takes a step back from its usual comprehensive filter discussions to cover background information on how filters do what they do. In part four of this series, Knowles provides overviews of the main filter types and key filter technologies available today.

  6. Impedance: Examining The Opposition 4/25/2022

    Impedance, measured in ohms, extends the concept of “opposition” to alternating current (AC) applications and plays an important role in capacitor selection.

  7. Planar Filter Technology For mmWave Applications 3/21/2022

    Planar filters are manufactured by creating flat 2D resonators with patterns of strip elements on a dielectric substrate. Depending on the filter topology, planar filters can offer a high quality factor (Q) and a reasonable approach to achieving performance in a small footprint. 

  8. Filter Basics Series Part 2: Designing Basic Filter Circuits 3/18/2022

    In part two of this series, Knowles covers how RF designers can use the different frequency dependencies of capacitors and inductors to manipulate impedance and create various filter responses. 

  9. Surface-Mount Vs. Through-Hole Technology 3/14/2022

    There are two main mounting schemes for placing components on a printed circuit board (PCB): through-hole technology (THT) and surface-mount technology (SMT). Given its popularity over the last few decades, it’s no surprise that designers default to SMT, but there are advantages to both schemes that are worth exploring, especially for high-reliability application designs.

  10. Filter Basics Series Part 1: Resistance, Capacitance, Inductance, And Impedance 2/18/2022

    To kick off this series, Knowles Precision Devices breaks down the basic properties, impacting capacitor and inductor performance including resistance, capacitance, inductance, and impedance.