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Exxelia Ohmcraft High voltage resistors in 3D dental imaging

To ensure the reliability of 3D imaging used by dentists, CBCT system manufacturers have relied on Exxelia Ohmcraft's custom high voltage resistors.

To capture adequate images of a patient’s teeth and jaw, dentists rely on advanced 3D imaging from cone-beam computed tomography (CBCT) systems. The CBCT system’s outputs are critical for the accurate diagnosis of oral health concerns and subsequent plans for treatment. To ensure the reliability of these images, manufacturers of CBCT systems have leveraged Exxelia Ohmcraft’s custom, high voltage resistors.

“In general, X-Rays require very high voltages to operate and generate clear, precise 3D images,” said Eric Van Wormer, Vice President of Exxelia Ohmcraft. “Because of the unmatched precision and control in surface-mount and leaded resistors from Exxelia Ohmcraft, manufacturers of this type of technology have turned to us to help ensure the reliability of their systems and the quality of the images they produce.”

CBCT systems are used to assist dentists in a variety of procedures, including dental implant placement, root canal therapy, the treatment of temporomandibular joint (TMJ) dysfunction, and oral surgery.

Exxelia Ohmcraft’s technology utilizes the proprietary Micropen electronic printing system to “print” precise, narrow, serpentine lines with resistive ink on a ceramic substrate, producing higher performance resistors over a wider range of values on a smaller surface area than is possible with conventional film resistor technology.

Published on 17 Mar 2021 by Valentine Taffineau

Revolutionary Exxelia MML™ Ultra-High Energy Density Film Capacitors

Discover the power of MML™ technology The best performing film capacitors on the market with the highest energy density ever! Exxelia&#39;s revolutionary MML™ ultra-high energy density Film Capacitors are a game changer in the industry due to their unparalleled energy density of 400 J/dm3. This allows for a significant reduction in size and weight in comparison to traditional Polypropylene or Polyester dielectrics, as well as an increased operating temperature of up to 140°C and protection against transient voltage. Not only do MML™ capacitors offer a large flexibility in design, allowing for low profile configurations, but they have also been tested in actual cases for controls and DC-Links functions in aircraft applications and have shown a reduction in size and weight of about 50% compared to other film technologies.   Furthermore, when compared to MLCCs, MML™ capacitors have demonstrated a reduction in weight of between 70% to 90%, with no capacitance derating with voltage applied and a low drift of less than 5% across the temperature range. Applications that previously required clusters of stacked MLCCs can now be replaced by a single MML™ unit of similar size, with the added reliability that film dielectric offers. The exceptional properties of Exxelia&#39;s new MML™ capacitors make them suitable for a wide range of applications including power supplies, DC-links, AC/DC/AC power converters, charge/discharge or power generation functions of commercial/military aircraft, satellite platforms and payloads, launchers, defibrillators, downhole tools and any other applications that require confined electronics. Samples are available upon request.   Features & Benefits : Miniaturization of the function : Up to 50% size reduction vs other film technologies ; matching footprint with stacked MLCC Lightweight : 50% lighter vs other film technologies ; 80 to 90% lighter than ceramic No capacitance derating in voltage, stable in temperature (<5% drift through the temperature range) Capacitance from 1μF to 1000μF  Voltages from 50V to 1000V  Operating Temperature -55 °C to +140 °C Highly customizable   Get your white paper around our MML Film Capacitor Download our white paper now on our innovative Miniature Micro-Layer™ (MML™) technology, which offers the highest capacitance per volume for film capacitors available on the market, by filling out the form below.   Chargement&hellip;

Exxelia Ohmcraft's cutting-edge resistors redefining reliability in the aerospace industry

Exxelia Ohmcraft provides designers of space instrumentation with resistors that are the foundation for building robust power supplies, sensors and imaging equipment. Exxelia Ohmcraft products have helped push forward scientific advancements in mass spectrometry, image intensifiers, X-Ray sources and spectroscopic analysis. We provide standard and custom products to many market leaders with the reliability that makes Exxelia Ohmcraft the resistor of choice for such critical scientific space applications.   Our unique Micropen precision printing technology produces ultra-stable resistors with exceptional reliability that are perfectly suited for space flight applications. For over 20 years, Exxelia Ohmcraft has been designing resistors used in instruments on various spacecrafts. Our resistors enable the analytical equipment designed for strategic science missions which creates the space technology that explores outer space. Exxelia Ohmcraft technology produces a superior resistor. The combination of our longer serpentine pattern and high-aspect ratio gives our resistors unmatched design flexibility, linearity, stability and low noise capability as well as:     Ultra High Voltages up to 60 kV Extremely tight tolerances to 0.1% Very low TCR with extended temperature range Very low noise / Very low VCR Ultra-high stability         Custom designs for Space applications Exxelia Ohmcraft ability to design and deliver custom resistors is essential for space instrumentation designers. Our engineers work closely with you to design resistors that match your exact specifications. Surface-mount resistors, dividers and networks Extensive experience designing custom resistors and supporting source control drawings (SCD) for existing and new designs Engineering Models Flight Models Exxelia Ohmcraft can perform Lot Acceptance Testing (LAT) on our resistor products using a number of Space and Military Specifications, including: NASA EEE-INST-002 Level 1, Level 2 or Level 3 MIL-PRF-55342, MIL-PRF-49462 and MIL-PRF-83401 MIL-STD-202 ESCC 4001 (ESA/SSC 4001)   Our expertise in designing for military applications spans across a spectrum of products, each contributing significantly to advancing military capabilities: Scientific Instrumentation   Products: MCH, HVR, HVD, HVA and Custom designs Applications: Mass Spectrometers Ion Mobility Spectrometers Test Equipment Signal Generators Chemical / Mineral Sample Analysis Instrumentation Power Supplies   Products: MCH, HVR, HVD, HVA and Custom designs Applications: High Voltage Custom Power Supplies Vision Systems   Products: MCH, HVR, HVD, HVA and Custom designs Applications: Image Intensifier Circuits  Optical Spectrometers Photomultipliers     Exxelia Ohmcraft is the leader in high performance resistor design and manufacturing. Our proprietary Micropen precision printing technology enables superior precision thick-film resistors. Exxelia Ohmcraft can meet the most challenging space instrument specifications for high voltage and high value resistors.   Exxelia Ohmcraft’s sister division, Exxelia Micropen Medical is at the forefront of medical device product development, providing design engineers with unique insights on conceiving and implementing new designs and features. 
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