EuMW 2017 - stand 190

Exxelia expose ses solutions Microwave / RF sur le salon EuMW qui se tient du 10 au 12 octobre à Nuremberg, Allemagne. Sur le stand n°190, des condensateurs RF et des solutions hyperfréquences dédiées aux marchés des transports, du médical et de la défense seront présentés.


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 @ 500 VDC. The lowest ESR is obtained by combining highly conductive metal electrodes and proprietary of the NPO low loss rugged dielectrics. NHB series is particularly fit 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

Dielectric resonators are designed to replace resonant cavities in microwave functions such as filters and oscillators. Exxelia has developed with support of ESA and CNES, a new high-end dielectric material, E7000 series, designed for high-end filters where high Q factor is requested.

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 provides high-performance requested for space use in the frequency range 5 to 32 GHz, and guarantees up to Qxf > 250 000 at 10GHZ. Typical applications: Satellite multiplexing filter devices, radio links for communication systems (LMDS), military radars.

Publié le 18 Sep 2017 par Marion van de Graaf

Exxelia expose à Electronica China - Stand E5 5580 -

Ultra low ESR, high RF power and high self-resonant frequency The new 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.     Felsic HV, long lifetime and high voltage screw terminal The Felsic HV family of aluminum electrolytic screw terminal capacitors provides great performances in energy density and ultra-long lifetime. For example products can withstand 8 000 hours at 105°C under high values of current which makes them the perfect choice to overcome railway constraints. The family also has one of the lowest ESR for aluminum capacitors, less than 10m0hms in most cases. Products are available for voltages from 160 to 450 Vdc, and offer capacitance values from 1500μF up to 47 000μF. Thus the family is a good compromise between reliability and compacity, with for example 47 000μF @ 160V in a 90x200mm volume.     Cost-effective common-mode chokes qualified for aerospace Designed and qualified for aerospace, the TCM series is available in a through-hole package for horizontal and vertical mounting. TCM common-mode chokes are offered with inductances from 0.7 to 47mH under rated currents from 0.3A to 4A, and thoroughly tested by a dielectric withstanding strength at 1500VAC. Their excellent thermal properties allow the TCMs to operate without a hitch from -55°C up to +125°C, which, combined to the high mechanical resistance of the chosen materials (all meeting to UL94 V0 rating) make those products the perfect fit for aviation, defense and transportation industries.       Two new ranges of Metallized Polyester Film Capacitors qualified for space Ranges PM907S and PM948S of Film capacitors obtained the QPL certification from the European Space Components Coordination (ESCC). PM907S and PM948S part of the PM series, are full ranges of Metallized 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 with a voltages from 50V up to 630V with capacitance values from 22nF up to 47μF. Both ranges can support extreme conditions with temperatures from -55°C to +125°C, and offer high energy density, low ESR & ESL and high RMS current. Products are typically being used in SMPS (Switch Mode Poser Suppliers) and BUS filtering.   A new range of high capacitance wet tantalum capacitors The new wet tantalum WT83 capacitors series is based on the CLR93 MIL specification but with double the capacitance. For instance, WT83 offers 1000µf 100V in a D size case. That is a pass for impactful miniaturization of existing designs by playing on both size, by reducing the PCB footprint, and weight. Besides, thanks to their hermetically sealed package, the WT83 series can withstand high vibrations and shock levels (50g and 100g respectively) which makes them the solution of choice for Aviation, Space and Defense.

Nouveau diélectrique céramique haute tension, haute stabilité

La miniaturisation des systèmes électroniques est devenue un enjeu majeur et touche tous les domaines d’application. Afin de répondre à cette tendance, Exxelia Technologies (ex-Eurofarad) a développé une gamme de condensateurs céramique haute tension basée sur un tout nouveau matériau diélectrique (C48X) combinant tous les avantages des produits X7R et NPO/C0G. En effet, le C48X permet d’obtenir les mêmes valeurs de capacité sous tension que le X7R, avec l’avantage indéniable d’avoir un facteur de dissipation extrêmement faible (moins de 5.10-4). De plus, le C48X supporte un dV/dT très élevé jusqu’à 10kV/μs, faisant de ce matériau une solution de choix pour les applications nécessitant une charge/décharge ultra rapide ou pour des systèmes d’allumage. Les condensateurs C48X sont également parfaitement adaptés aux applications de puissance où la dissipation de chaleur peut être préjudiciable aux performances et à la fiabilité. Les condensateurs C48X du groupe Exxelia ont été développés des tailles 1812 à 16080 pour des tensions allant de 200 à 5000V, avec une capacité maximale de 10μF à 200V (10 fois supérieure par rapport à la capacité obtenue avec une céramique NPO). Les produits stackés sont proposés avec une capacité maximale de 47μF à 200V. Plusieurs solutions de report existent sur cette nouvelle gamme, compatible aussi bien avec un montage en surface qu’avec un report sur circuit à trous traversants. Toutes ces versions sont adaptées aux usages spatiaux et peuvent être conçues pour éviter le risque de whiskers (alliage étain-plomb à 10% de plomb mini). La gamme C48X est en cours d’introduction en EPPL ESA pour les tailles 0603 à 6560 de 100V à 1kV jusqu’à la taille 1210 et jusqu’à 5kV pour les tailles supérieures. Quelques applications usuelles : • Alimentations à 400Hz, • Defense • Spatial • Filtrage AC ou DC en environnement thermique

En poursuivant votre navigation sur ce site, vous acceptez l’utilisation de cookies pour réaliser des statistiques de visites.