New, 3-Cell Supercapacitors Support Significant Jump in Energy Storage

Posted by Trent Carroll on Mar 20, 2024 8:15:00 AM

We recently released new supercapacitor modules that provide a significant jump in voltage rating over typical radial-mount supercapacitors, up to 9.0 WVDC.

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Topics: Capacitor

AEC-Q200 Leaded Standoff MLCC for Automotive Applications

Posted by Matt Johnson on Feb 14, 2024 8:15:00 AM

To help PCBs and other physically connected components survive vibration, board bending, thermal mismatching, and stress during thermal cycling, Knowles Precision Devices has launched a range of leaded standoff components, Metal Frame J-Lead Terminal MLCCs, that are qualified to AEC-Q200. AEC-Q200 is the global standard for stress resistance in passive electronic components in automotive applications. 

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Topics: Capacitor

Snubber Capacitors in the Field

Posted by Jordan Yates on Jan 31, 2024 8:16:00 AM

Given that snubber capacitors address the negative impacts of switching, it’s no surprise that they’re most commonly found in switching power supplies. These systems face major challenges from switching, including: 

  • Switching transients 
  • Parasitic elements 
  • High-frequency noise 
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Topics: Capacitor

Understanding the Critical Roles of Specialty Capacitors in Power Electronics

Posted by Jordan Yates on Jan 10, 2024 8:15:00 AM

Capacitors serve many crucial functions in power electronic circuits. Their ability to store electric charge makes them essential components for regulating and smoothing power flow. 

Many of these capacitors are standard fare, but a few play highly specialized, functional roles. To meet application-specific demands, these capacitors must be selected carefully based on function, size, and interoperability. 

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Topics: Capacitor

Today’s RF Power Applications Require Understanding Equivalent Series Resistance & Q Factor

Posted by Steve Hopwood on Dec 20, 2023 6:00:00 AM

As a fundamental component of circuit design, equivalent series resistance (ESR) is the measurement of all the non-ideal electrical resistances in series with a capacitor. When current flows through a multilayer ceramic capacitor (MLCC) due to application of alternating voltage, heat is generated in the MLCC due to the losses, specifically ESR. As a result, this self-heating can cause various performance and reliability issues in the circuits of today’s more complex and smaller electronic systems.

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Topics: Capacitor, Automotive, Electric Vehicles

The Roles of Capacitors in EV Traction Inverter Topologies

Posted by Jordan Yates on Dec 13, 2023 8:15:00 AM

The power electronic systems in an electric vehicle (EV) feature a wide variety of capacitors. From DC-link capacitors to safety capacitors and snubber capacitors, these components play a critical role in stabilizing and safeguarding the electronics from factors like voltage spikes and electromagnetic interference (EMI). Here, we’ll focus on the capacitors used in the EV traction inverter.  

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Topics: Capacitor, Electric Vehicles

Resonant Wireless Power Transfer in Implantable Medical Devices

Posted by Peter Matthews on Dec 6, 2023 8:15:00 AM

With the rising prevalence of cardiovascular, orthopedic, and other chronic conditions, and an increase in the number of patients needing care, the demand for implantable medical devices continues to increase. 

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Topics: Capacitor, Medical

Non-Magnetic Trimmer Capacitors for In-Suite or Portable MRI Machines

Posted by Jordan Yates on Nov 1, 2023 8:15:00 AM

MRI systems are so robust and require so much infrastructure that they need their own dedicated room—until recently.

A portable magnetic resonance imaging (MRI) system, or point of care (POC) MRI machine, is a compact, traveling device that’s designed for patient imaging outside of the traditional MRI suite (e.g., emergency rooms, ambulances, rural clinics, field hospitals, etc.)

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Topics: Capacitor, Medical

Power Divider Basics

Posted by Peter Matthews on Oct 25, 2023 8:15:00 AM

Radio frequency (RF) power dividers are designed to split an incoming signal into multiple outputs such that there’s a portion of the original signal’s power in each output. Given their critical function, power dividers play a particularly important role in antenna systems, telecommunications, and signal processing.

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Topics: Capacitor, Military and Aerospace, High Reliability

How Gallium Nitride (GaN) Semiconductors in Defense Power Supplies Affect Capacitor Selection

Posted by Jordan Yates on Oct 18, 2023 8:30:00 AM

Defense applications tend to operate at high voltages and wide temperature ranges. They require components with increased efficiency, reduced size, and high power density. Because a wideband gap (WBG) semiconductor embodies these characteristics, defense and aerospace systems are increasingly using Gallium Nitride (GaN) for power conversion. 

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Topics: Capacitor, Military and Aerospace, High Reliability

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

and much more. Subscribe below to stay informed.

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