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EXXELIA at Space Tech Expo EU 2019

Exxelia showcases Space Grade Magnetics & Ceramic Capacitors at Space Tech Expo Europe 2019 in Bremen, Germany

Exxelia showcases Space Grade Magnetics & Ceramic Capacitors at Space Tech Expo Europe 2019 in Bremen, Germany

November 5th, 2019 – Paris, France - Exxelia, a leading global designer and manufacturer of highly engineered passive components, will be showcasing its ESA qualified CCM technology and its EPPL C48X Ceramic Capacitors range booth K-24 at Space Tech Expo Europe, November 19-21 in Bremen, Germany.

 

ESA Qualified CCM Technology

Exxelia’s highly customizable Chameleon Concept Magnetics technology allows to manufacture inductors and transformers. Available in 5 different sizes allowing a high number of windings and up to 10*2 pins, this technology withstands harsh environments, shocks and vibrations and operates over a wide temperature range of -55°C / +125°C.   

Thanks to its epoxy molding protecting the windings and ensuring a better thermal dissipation to the pins and PCB, CCM products imply 50% less temperature rise, hence offering an additional 10 to 20% more power compared to a standard technology.

The CCM Technology in 5 key takeaways:

  • Ideal for the design of multi outputs transformers
  • Time saving & Higher reliability: up to 10*2 pins avoiding lead wire connections
  • Easy mounting on PCB: compatible with pick-and-place surface mount
  • Up to +20% more power versus standard technologies
  • No additional cost for tooling and qualification

 

C48X Ceramic Capacitor range officially listed in EPPL

Combining the advantages of class 1 (NPO) and class 2 (X7R) dielectrics, the C48X dielectric (-2,200ppm/°C) provides, under working voltage, equivalent capacitance values to an X7R material with the advantage of a very low dissipation factor of less than 5.10-4.

  • Withstands very high dV/dt, up to 10kV/ µs
  • Very low dissipation factor -> less than 5.10-4
  • Capacitance value of 3.3µF 200V -> up to 40 times more than an NPO
  • Polymer flexible layer for chips range

Compatible to surface mounting (chips, DIL or ribbon leads) or through-hole mounting and available from 200V to 5kV with sizes ranging from 1812 to 6560 allowing a maximum capacitance of 3.3µF at 200V, the EPPL C48X series is ideal for pulse and charge/discharge applications and precision filtering capacitance in thermally challenged environment for AC or DC voltage and 400 Hz application such as on-board network. 

Published on 08 Nov 2019 by Rebecca Charles

Countering Threats from Transients in Magnetics

Understanding Electrical Transients in Magnetics Electrical transients are sudden, short-duration spikes in voltage or current. They can arise from various sources such as lightning strikes, switching operations, or inherent instabilities within the system. These transients can cause severe stress on magnetic components, leading to potential malfunctions or catastrophic failures.   Causes of Electrical Transients Electrical transients can originate from external factors like environmental conditions or input/output operations. Internally, they can be caused by the natural response of the system's reactive components: resistors, inductors, and capacitors. These components, governed by the laws of physics, react to changes in state variables, resulting in oscillations, amplification, or decay of signals.   Effects on Magnetic Components Magnetic components, such as transformers and inductors, are particularly susceptible to transients. For instance, transformers can exhibit parasitic components that affect their response to sudden voltage or current changes. These parasitic elements can cause amplification, oscillation, or even breakdown under transient conditions.   Mitigating Transient Threats Effective mitigation of transient threats involves understanding the behavior of magnetic components under dynamic conditions and implementing design strategies to counteract these effects.   Component Functions and Response Resistors: Dissipate energy to manage power levels. Inductors: Generate opposing voltages to slow current changes. Capacitors: Absorb or release charge to stabilize voltage changes. The induced voltage and current in inductors and capacitors are inversely proportional to the circuit's time constant. A smaller time constant means faster energy transfer, which can lead to higher transient voltages or currents.   Transformer Design Considerations Transformers must be designed to handle dynamic impedance transformations and provide necessary isolation. Realistic transformer models must account for parasitic components, which can significantly influence their behavior during transients. High voltage transformers, for instance, are prone to series resonance due to leakage inductance and self-capacitance, leading to oscillations and potential saturation.   Practical Mitigation Techniques High Bandwidth Instruments: Use to detect latent transient amplification and persistent ringing during normal operations. Worst Case Analysis: Evaluate bias currents and flux density for worst-case scenarios, including maximum voltage and temperature conditions. Current Transformer Verification: Ensure that protection circuits can detect transient overcurrents despite reduced output due to saturation. Residual Magnetization Control: Verify that residual magnetization does not impair operation, ensuring sufficient headroom for magnetization. Design of Experiments (DOEs), Risk Reduction Tests (RRTs), and Accelerated Stress Tests (ASTs): Implement these throughout the design stages to mitigate risks effectively. Protective Components: Use components like MOVs (Metal Oxide Varistors) to safeguard circuits from lightning-induced transients.   Countering threats from transients in magnetics requires a thorough understanding of the underlying causes and the implementation of robust design strategies. By employing high bandwidth detection instruments, performing worst-case analyses, and integrating protective measures, engineers can significantly reduce the risk of transient-induced failures in magnetic components. Adopting a proactive approach to design and testing ensures the resilience and reliability of electrical systems in the face of transient threats.

Exxelia at CMSE 2023

Come and discover the latest innovations from Exxelia at our booth during the event. We have a range of high-quality products (Capacitors, Filters, Magnetics, Materials & Tuning Components, Position Sensors, Ohmcraft Resistors, Slip Rings & Rotary Joints) designed to meet the needs of your industry. We can't wait to show you how our solutions can improve your projects and increase your efficiency. Don't miss the opportunity to meet our team of experts and find out how we can help you achieve your goals. Join us at our booth for an enlightening experience.   Exxelia is pleased to announce that its renowned expert, Victor W. Quinn, will be presenting a conference titled "Compact and reliable transformer with integrated inductor" on Wednesday, April 26th at 4:40 PM. This conference will highlight the latest technological advancements in the design of compact and reliable transformers with integrated inductors. The conference will be held in the main conference room, and attendees will also have the opportunity to ask Mr. Quinn questions at the end of his presentation. We hope to see you there.  
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