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Exxelia at IMS

Exxelia is pleased to exhibit at IMS in Philadelphia, USA. From June 11 to 15 at booth# 2050, the company will be previewing several high-reliability microwave and RF components dedicated to a variety of industries including medical, transportation and defense.

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.

Publié le 29 May 2018 par Marion van de Graaf

Les condensateurs révolutionnaires MML™ d’Exxelia à ultra-haute densité d’énergie

MML™ est une nouvelle technologie révolutionnaire qui offre la plus grande capacité par volume dans les condensateurs à film disponibles sur le marché.    Pourquoi cette technologie change-t-elle la donne ? Parce qu’une densité d’énergie inégalée de 400 J/dm³ permet une réduction considérable de la taille et du poids par rapport aux diélectriques traditionnels en polypropylène ou en polyester, ainsi qu’une température de fonctionnement supérieure pouvant atteindre 140 °C et une protection contre les tensions transitoires. En outre, les condensateurs MML™ offrent une grande flexibilité dans la conception, permettant facilement des configurations à profil bas. Plusieurs études ont été menées sur des cas réels de commandes et de fonctions DC-Links pour des applications aéronautiques. Toutes ont montré une réduction d&#39;environ 50 % de la taille et du poids par rapport aux autres technologies de film.  Le tableau comparatif avec les MLCC est encore plus flatteur, puisqu’il démontre entre 70 % et 90 % de réduction de poids, tout en ne montrant aucune dérive de capacité avec la tension appliquée et une faible dérive < 5 % sur toute la plage de température. Les applications utilisant des regroupements de MLCC empilés peuvent désormais être remplacées par une seule unité MML™ de taille similaire, avec toute la fiabilité accrue qu’offre le diélectrique à film. Avec de telles propriétés exceptionnelles, les nouveaux condensateurs MML™ d’Exxelia sont parfaitement adaptés aux alimentations, aux liaisons DC, aux convertisseurs de puissance AC/DC/AC, aux fonctions de charge/décharge ou de génération d&#39;énergie des avions commerciaux/militaires, des plateformes et des charges utiles de satellites, des lanceurs, des défibrillateurs, des outils de fond de puits et de toutes les applications d’électronique confinée. Des échantillons sont disponibles sur demande. Caractéristiques et avantages :   Miniaturisation de la fonction : jusqu’à 50 % de réduction de taille par rapport aux autres technologies de film ; taille identique à celle des céramiques empilées. Légèreté : 50 % plus légère que les autres technologies de film ; 80 à 90 % plus légère que la céramique. Pas de dérive de la capacité en tension, stable en température (<5 % de dérive sur la plage de température). Capacités de 1μ F à 1000 μF  Tensions de 50 V à 1000 V  Température de fonctionnement -55 °C à +140 °C Hautement personnalisable

Exxelia à Space Tech Expo

ESA QPL Film Capacitors PM907S and PM948S are full series of Polyester Film Capacitors. PM907S products are suitable for voltages from 50V up to 1250V and offer capacitance values from 82nF up to 180μF. PM948S can be used from 50V up to 630V with capacitance values from 22nF up to 47μF. Both series can support extreme conditions with temperatures from -55°C to +125°C, and offer high energy density, low ESR & ESL and high RMS current. Film capacitor Series PM907S and PM948S are ESA QPL certified according to the ESCC Detail Specification No. 3006/025 and 3006/026   Smallest ESA QPL Ceramic Capacitor of the Market Exxelia ranges of low voltage MLCC for surface mounting, CEC19 and CNC19, have achieved the ESA Qualified Part List status under the criteria of the European Space Component Coordination’s (ESCC) 3009/042 and 3009/043 respectively. The  0402 size QPL-qualified parts are available from 10V to 25V, enabling substantial miniaturization and cost-saving. They are available either in the very stable NPO dielectric (type 1) or the high capacitance X7R (type 2). CEC and CNC series combine high capacitance values with high thermal and voltage stability. Versions with polymer terminations are also QPL-certified.   Miniature EMI filters for space application Exxelia’s gold-plated glass-sealed EMI filters SFC030 is the solution of choice to protect several embedded power supplies and data lines.  These small and reliable filters are available up to 5A @ 200V and 22nF.  Available in a Kovar package, the better alternative to steel for enhanced temperature cycling resistance, all Exxelia’s EMI filters for space are ESA qualified according to ESCC 3008. Thanks to this extensive experience in stringent ESA testing, Exxelia is able to adapt the tests of any filter according to any need (example: SMD 20A chip, 0pF capacitor value for an arrays of filters).
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