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TCM Series of High-Reliability Common-Mode Inductors

Exxelia is pleased to present the new TCM series of common-mode inductors. Designed and qualified to be compatible with aerospace and other high-reliability applications, the TCM series is a cost-effective solution for harsh environments.

Exxelia designed this extensive and cost-effective range to be an easy commercial (COTS) solution for aerospace, defense, and other high-reliability applications.

The TCM series is available in a through-hole package for horizontal or vertical mounting. TCM chokes are offered with inductances from 0.7 mH to 47 mH under rated currents from 0.3 to 4.0 A.  Each unit is thoroughly tested with a dielectric withstanding strength of 1,500 VAC.

Excellent thermal properties allow the series to operate from -55° C to +125° C. The high mechanical performance of the component materials (all meeting to UL94 V0 rating) makes TCM a perfect fit for aviation, defense and transportation industries.

The TCM series of common-mode chokes is designed into circuit boards of a large number of power electronic devices used for a wide range of applications, including switch-mode power supplies and converters, inverters, battery management systems, and chargers. Exxelia’s TCM series fully complies with the requirements of RoHS and REACH.

Published on 12 May 2017 by Marion Van de Graaf

Exxelia Ohmcraft: Empowering Military Innovations

Innovation is the cornerstone of military success. At Exxelia Ohmcraft, we understand this fundamental truth. For over two decades, we have been the stalwart provider in the realm of electronic warfare, weapons platforms, force protection, and intelligence programs. Our steadfast commitment lies in enabling advancements across diverse military sectors through our unparalleled custom resistors. Our unique Micropen® precision printing technology produces ultra-stable parts that are perfectly suited to the military’s rugged requirements, delivering a typical load life of 0.1% over 10,000 hours. This proven stability, accuracy, and quality support the long-term program life of many military products and programs. Micropen 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:     High Voltage (to 40 kV) Low Noise / Very low noise Vers low TCR Resistor Value (> 1 MΩ up to 10 TΩ) Ultra-high stability Extremely tight tolerances to 0.1%         Custom designs for Military applications Exxelia Ohmcraft’s ability to design and deliver custom resistors is essential for military suppliers. 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 Small runs to support prototypes to large volume manufacturing Exxelia Ohmcraft can test parts using a number of military specs, including: MIL-PRF-55342, 83401, 55182H, 914B, and 49462B MIL-STD-129, 1276F, and 1285F MIL-STD-202 Space-grade resistors Extended temperature range Rapid prototyping   Our expertise in designing for military applications spans across a spectrum of products, each contributing significantly to advancing military capabilities: Flight & Space   Products: HVC, HVR, HVD, HVCD and Custom Applications: Aerospace Flight controls Satellites SATCOM Microwave Radar Tactical   Products: HVC, HVR, HVD, HVCD and Custom Applications: Night vision goggles Ordnance Electronic warfare Munitions Bomb fuze Tasers   Systems   Products: HVC, HVR, HVD, HVCD and Custom Applications: Surveillance Detection Navigation Monitoring Sight systems Motion control Communications Networks   At Exxelia Ohmcraft, our commitment transcends the creation of resistors. We are dedicated to empowering the visionary innovations that define the future of military technology. Our team is poised to collaborate and customize solutions that perfectly align with the evolving needs of military applications. In a landscape where reliability is non-negotiable and precision is imperative, Exxelia Ohmcraft stands as the beacon of unwavering support, fortifying military operations with resilient, high-performance 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. 

Exxelia at IMS

Ultra low ESR, high RF power and high self-resonant frequency The NHB series is a complete range of MLCC based on NPO dielectric material providing a very high Self Resonant Frequency and limiting the parasite Parallel Resonant Frequencies. The series is available in 1111 size with capacitance ranging from 0. 3pF to 100pF. NHB series offers excellent performance for RF power applications at high temperature up to 175°C and at 500 VDC. The lowest ESR is obtained by combining highly conductive metal electrodes and proprietary of new NPO low loss rugged dielectrics. NHB series particularly fits for high power and high frequency applications such as: cellular base station equipment, broadband wireless service, point to point / multipoint radios and broadcasting equipment. Typical circuit applications: impedance matching, bypass, feedback, tuning, coupling and DC blocking. 100% invar tuning screws with self-locking system   Invar-36 is a unique Iron-Nickel alloy (64 % Fe / 36 % Ni) sought-after for its very low coefficient of thermal expansion. With 1.1 ppm. K–1 between 0°C and 100°C, Invar-36 is about 17 times more stable than Brass which is the most traditional and common alloy Tuning Elements are made of. The working temperature range in Space is so wide that this property becomes essential for a reliable and stable cavity filter tuning. Self-locking system is a technology commonly used on Tuning Element made of Brass or other soft “easy-to-machine” alloys but is innovative and pretty advanced when applied to hard and tough Invar 36. The design consists of two threaded segments separated by two parallel slots. After cutting both parallel slots, the rotor is compressed in its length in order to create a plastic deformation. Thus, an offset is induced between the two threaded segments which generates a constant tensile stress in the rotor from the moment threaded segments are screwed. High Q Factor Dielectric Resonators in large batches Dielectric resonators are designed to replace resonant cavities in microwave functions such as filters and oscillators. Exxelia with the support of ESA and CNES developed the E7000 series that provides a narrow bandwidth with smaller size. E7000 is Ba-Mg-Ta materials based that combines an ultra-high Q-factor and the possibility to get all the temperature coefficients upon request. E7000 features the high-performance requested for space use in the frequency range from 5 to 32 GHz, and guarantees up to Qxf > 250 000 at 10GHZ. Being one of the few manufacturers producing its own raw materials, Exxelia perfectly masters the production of dielectric resonators. Induced by the success of this new range, the company is now able to provide larger batches (up to 20kg of powder) of its E7000 series while keeping the exact same product properties, resulting in opportunities for cost-effective volume fabrication.
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