Steve Hopwood

Recent Posts

Continuing Our Investment in Surface-Mount EMI Filters

Posted by Steve Hopwood on May 25, 2022 9:00:00 AM

Since a lot of electronic component manufacturers are now focusing production efforts on high-volume commodity applications, as their specialty component production equipment ages, many companies are electing to divest in this type of production. One component that we’ve seen fall into this category in recent years is the surface-mount electromagnetic interference (EMI) filter. These three-terminal chips use conventional multilayer ceramic capacitor (MLCC) manufacturing techniques to form a filter that has a short circuit end-to-end and has a capacitance between the end terminals and the side (ground) terminals. 

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Topics: Filtering

Are You at Risk of Violating International Dual-Use Export Laws?

Posted by Steve Hopwood on May 4, 2022 7:00:00 AM

Today, many electrical systems are demanding higher operating voltages and temperatures, along with higher capacitance values – particularly in the fast-growing area of power electronics for electric vehicles (EVs). Therefore, electrical design engineers are looking to use multilayer ceramic capacitors (MLCCs) in these applications due to their inherent low inductance and wide operating temperature range.

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Topics: Capacitor, Electric Vehicles

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

Posted by Steve Hopwood on Jan 19, 2022 9:00:00 AM

In recent years, multilayer ceramic capacitors (MLCCs) have emerged as an excellent capacitor option for the high-power electrical systems needed in electric vehicle (EVs) due to their small physical size, low inductance, and ability to operate at higher temperatures. However, EV engineers are facing two big challenges with using MLCCs including DC bias that can cause capacitance loses of 80 to 90 percent of their quoted value and self-heating issues from AC ripple that can lead to inefficiencies in circuits as well as increased cooling demands. 

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Topics: Capacitor, News and Events, Electric Vehicles

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

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

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

Solving Tough Technical Challenges Through Agility and Experience

Posted by Steve Hopwood on Sep 8, 2021 9:00:00 AM

At Knowles Precision Devices, we thrive on working with companies who want to take technically challenging ideas and work through the details to figure out how to turn their seemingly impossible ideas into reality. This is because we are not limited to volume production and have extensive experience making specialty and custom parts. We are also familiar with the challenges associated with delivering high-reliability components as we supply many industries and applications that depend on the consistent functionality of custom-shaped parts. For example, we provide numerous space grade components and we are the only manufacturer who has developed planar array ceramic parts for the International Space Station. 

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Topics: Capacitor, Medical, High Reliability

Meet Safety Requirements at Higher Voltages with New Safety-Certified MLCCs

Posted by Steve Hopwood on Mar 17, 2021 7:00:00 AM

With our new expanded range of enhanced safety-certified multilayer ceramic capacitors (MLCCs), Knowles Precision Devices now offers a unique combination of capability and safety certification for electronic device applications. These new surface-mount MLCCs comply with international UL60384-14 and EN60384-14 specifications and can be used instead of leaded film capacitors in AC-DC power supplies where a lightning strike or other voltage transients represent a threat to the electronic equipment.

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Topics: Capacitor, High Reliability

Webinar: Selecting Safe and Reliable Components for High-Voltage EVs

Posted by Steve Hopwood on Jan 21, 2021 9:00:00 AM

With production of high-performance electric vehicles (EVs) such as the Porsche Taycan and several manufacturers slated to release EVs with 800 V battery systems in 2021, using high-voltage battery systems in EVs is no longer just theoretical. Since vehicles operating at higher voltages can address consumer’s main concerns with EVs, this is a welcome advancement, especially as some countries are announcing regulations to eventually allow only EV sales. These changes include accelerating charging time by increasing power and reducing the weight of vehicles which, among other improvements, helps increase driving range and reduce consumer range anxiety.

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Topics: Automotive, Electric Vehicles

Live Webinar: Selecting Safe and Reliable Components for High-Voltage EVs

Posted by Steve Hopwood on Dec 21, 2020 9:00:00 AM

Mark your calendars for Wednesday, January 13, 2021 at 11 am EST for this Knowles Precision Devices and Charged EVs live Webinar discussing how to address the challenges associated with selecting safe and reliable components for high-voltage EVs.

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Topics: News and Events, Electric Vehicles

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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