High dv/dt conditions in low impedance circuits using surface mount tantalum capacitors is discussed. Circuit designs utilizing low R(DS)ON MOSFETs for preventing these conditions are presented in detail. TECHNICAL INFORMATION INCREASING RELIABILITY OF SMD TANTALUM CAPACITORS IN LOW IMPEDANCE APPLICATIONS by David Mattingly Application

Single crystalline microcubes of a new tantalum compound, tantalum oxychloride (TaO2.18Cl0.64), have been fabricated hydrothermally in a concentrated aqueous solution of hydrochloric acid and acetic acid. They contain a superstructure and exhibit remarkably enhanced photocatalytic activities for hydrogen production due to the improved light harvest and facilitated charge transport.

Abstract Three new iridium aluminum intermetallics CaAl 4 Ir 2 , SrAl and EuAl were synthesized from the elements using silica or tantalum ampoules. They crystallize in tetragonal crystal system with space group P 4/ ncc lattice parameters of a = 782.20(1) c 779.14(2) pm for 797.62(1) 772.75(2) finally 791.78(5) 773.31(5) . All compounds isostructurally adopt structure type that can be derived ...

Element 73 was first extracted from mineral samples and described in 1802 by the Swedish chemist Anders Ekeberg. He chose the name tantalum because “when placed in the midst of acids it is incapable of taking any of them up and saturating itself with them”, in a manner reminiscent of the Greek mythological king Tantalus (pictured) who couldn’t eat or drink anything despite being surrounded by f...

DIS. CHEST, VOL. 56, NO. 1, JULY 1969 FIGURE 3 (upper). Histologic section from right lower lobe of an animal sacrificed immediately after hronchography. Tantalum particles are seen in the lumen of the secondary bronchus. FIGURE 4 (lower). This histologic section from the right lower lobe of a dog sacrificed 24 hours after tantalum bronchography shows no evidence of the heavy metal in the airwa...

To develop an effective process for tantalum powder production, a new preform reduction process (PRP) based on the magnesiothermic reduction of feed preform containing tantalum oxide (Ta2O5) was investigated. The feed preformwas fabricated from slurry, which was made by mixing Ta2O5 powder, flux (e.g., CaCl2), and binder. Various compositions of preform in the form of plates were prepared using...

Niobium and tantalum carbide clusters have been isolated in the gas phase and irradiated with intense tunable infrared (IR) light. Stable neutral clusters are selectively ionized and subsequently detected in a mass spectrometer. By tuning the IR frequency, infrared multiphoton absorption spectra are obtained for a whole range of clusters. These mass-selective IR spectra lead to insights into th...