New Low Loss, Ultra Stable High-Capacitance MLCCs for Power Electronics

Posted by Steve Hopwood on Dec 1, 2021 9:00:00 AM

Many power electronics today are being designed for use in high-temperature, high-voltage environments, such as inside electric vehicles (EVs). However, size, weight, and power (SWaP) are also key factors driving electronic product development. These conflicting design criteria are an issue for many electrical engineers because space is not available to simply add a cooling system, as this will add weight and increase the product’s overall footprint. Therefore, many of these electronic components are susceptible to “running hot” at the high temperatures and high voltages used in these tiny spaces.

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Topics: Capacitor, Electric Vehicles, High Reliability

Looking Closer at Resonant Capacitors in Electric Vehicles

Posted by Simon Mao on Nov 23, 2021 7:15:00 AM

One of the primary goals in electric vehicles (EVs) is to increase the efficiency of its power conversion devices. The more efficiently power is converted, the further distance the EV can travel on one charge. For example, by reducing losses in a DC-to-DC (or DC/DC) converter, the converter (and overall vehicle) benefits from improved energy efficiency, a more streamlined design, and diminished heating from components.

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Topics: Capacitor, Automotive, Electric Vehicles

Addressing Electronic Circuit Development Challenges for Medical Devices

Posted by Shiraz Vakharia on Nov 17, 2021 9:00:00 AM

From systems that diagnose, like a magnetic resonance imaging (MRI) machine, to implantable devices that treat patients, like pacemakers and implantable cardioverter-defibrillator (ICDs), highly reliable electronic components are necessary. While the functionality of these devices is quite different, the challenges associated with designing these devices, such as selecting failsafe electronic components designed for lifetime reliability and ensuring supplier partners can meet industry-specific standards, are shared. Let’s look more closely at some of the industry-wide challenges associated with electronic component selection for medical devices as well as some of the application-specific decisions medical device designers need to make to ensure these devices function consistently and reliably for the long term.

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Topics: Medical, High Reliability

Live Webinar: Addressing MLCC Performance Issues in High-Voltage EV Applications

Posted by Steve Hopwood on Nov 10, 2021 9:00:00 AM

Join us and Charged EVs on Wednesday, November 17 at 10 am EDT for our latest live webinar – Addressing MLCC Performance Issues in High-Voltage EV Applications.

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Topics: Capacitor, News and Events, Automotive, Electric Vehicles

Simplifying the Transition from 5G Operations at Sub-6GHz to mmWave

Posted by Peter Matthews on Nov 3, 2021 9:00:00 AM

Turning 5G wireless communication into a widespread reality will require the use of mmWave frequencies. However, there are many of us RF engineers out there that have spent much of our careers working in the sub-6 GHz range, which actually has quite different needs than mmWave. Therefore, it is critical to get a handle on the key differences between working in this range and mmWave frequencies.

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Topics: 5G, RF and Microwave

Simplify Capacitor Dielectric Selection by Understanding Dielectric Coding Methods

Posted by Victor Lu on Oct 27, 2021 9:00:00 AM

When designing a ceramic capacitor, the type of dielectric used will influence the characteristics of the capacitor and define its electrical behavior. At a high level, there are two types of dielectrics made with ceramics – paraelectric and ferroelectric. Dielectrics containing paraelectric (or non-ferroelectric) ceramics are known as Class I dielectrics. These dielectrics show a linear relationship of polarization to voltage and are formulated to have a linear temperature coefficient. Capacitors using a Class I dielectric have high stability across various temperatures, but have low permittivity, which means the capacitor will offer low capacitance.

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Webinar: High-Reliability MLCCs for Medical Implantable Applications

Posted by Victor Lu on Oct 20, 2021 9:00:00 AM

If you’re struggling with the challenges of ensuring high-reliability with your medical device electronics, you won’t want to miss our upcoming webinar sponsored by GlobalSpec, Using High-Reliability MLCCs for Medical Implantable Applications, on Thursday, November 4 at 11:00 am EDT.

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Topics: Capacitor, News and Events, Medical, High Reliability

A Custom Approach to Large Capacitor Assembly

Posted by Steve Hopwood on Oct 13, 2021 9:00:00 AM

Achieving high capacitance means going big. But how do you do that while still maximizing board space? At Knowles Precision Devices, we’ve developed a new method for building customizable large capacitor assemblies that capitalize on the vertical space above the circuit board. While stacked capacitor assemblies have been around for many years, these parts do not have very good bump and vibration withstand due to the thin leads used in their construction. These new assemblies from Knowles Precision Devices offer a ruggedized construction capable of withstanding high levels of shock and vibration. This offers a unique combination of capability, durability, high capacitance, and very high voltage in a smaller area, making these capacitors ideal for automotive, military, and aerospace applications.

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Topics: Capacitor, Automotive, Military and Aerospace, High Reliability

Webinar: RF Components in Emerging SATCOM Applications

Posted by Peter Matthews on Oct 6, 2021 9:00:00 AM

In recent years, the focus for satellite communication (SATCOM) applications has shifted from coverage to capacity. As a result, SATCOM devices are being pushed to operate at higher bandwidths in the Ka, V, and E bands. At the same time, these devices need to be made increasingly smaller, which means smallsats, or satellites weighing less than 500 kg, are quickly gaining momentum, making size, weight, and power (SWaP) critical design considerations as well.

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Topics: RF and Microwave, Military and Aerospace, Filtering

RF Filtering Techniques for Millimeter Wave Applications

Posted by Peter Matthews on Sep 29, 2021 8:30:00 AM

The millimeter wave (mmWave) part of the electromagnetic spectrum is at the high end of the microwave region, which spans ~300 MHz to 300 GHz, and is usually taken to mean frequencies from ~30 GHz to 300 GHz and wavelengths in the range of 1mm to 1cm (Table 1). This dramatically increases available bandwidth, thus expanding achievable data rates, which makes these frequencies extremely interesting to teams around the world working on fifth generation (5G) communications.

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Topics: 5G, RF and Microwave

Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of Compex, DLI, Johanson MFG, Novacap, Syfer and Voltronics, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

This Blog will provide insights into:

  • Filters for 5G and mmWave
  • Capacitors for High Voltage
  • Capacitors for High Reliability

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