Improved solderability for MLVs using nickel-plated terminations

Hunter, Craig
November 2006
Electronics Weekly;11/22/2006, Issue 2266, p36
Trade Publication
The article reports that the developments in multilayer varistors (MLV) allow them a standard of solderability which is comparable to other electronics components and which resists leaching during assembly. The basic construction of an un-plated MLV includes a core of electrodes surrounded by ceramic material with thick film material capping the end. The external termination is a metal that connects the internal electrodes to the circuitry of the assembly using the MLV.


Related Articles

  • Influence of Nb addition on microstructure, electrical, dielectric properties, and aging behavior of MnCoDy modified Zn—V-based varistors. Choon-Woo Nahm // Journal of Materials Science: Materials in Electronics;Jun2010, Vol. 21 Issue 6, p540 

    The microstructure, electrical properties, dielectric characteristics, and DC accelerated aging behavior of the MnCoDy modified Zn–V-based varistors were investigated for Nb amount of 0.0–0.25 mol% by sintering at 900 °C. The microstructure of the MnCoDy modified...

  • Non-destructive monitoring of the physicomechanical properties of zinc oxide varistors. Krasavina, M. A.; Kovarskaya, E. Z.; Pugachev, S. I. // Refractories & Industrial Ceramics;Jul2007, Vol. 48 Issue 4, p306 

    Results are presented for a study of the physicomechanical properties of zinc oxide ceramic varistors produced by the St Petersburg ZAO Zavod Élektrozashchitnykh Ustroistv (ZAO ZÉU) by a non-destructive acoustic method. With analysis of the results the desirability is demonstrated of...

  • The Electrical Properties and Impedance Analysis of ZnO Varistors Doped with Different Cu2O Contents. Jiwei Fan; Huijun Zhao; Xiaoli Zhang // Applied Mechanics & Materials;2014, Issue 680-681, p173 

    The Cu2O addition deteriorates the electrical properties of ZnO varistors, which is a good agreement with similar findings on Ag2O additions. The best fitted impedance analysis reveals that the Cu2O addition increases grain resistance and lowers the grain boundary resistance, results in low...

  • New ZnSnO3-based varistor system. Zang, G.Z.; Wang, J.F.; Chen, H.C.; Su, W.B.; Wang, X.; Qi, P.; Wang, C.M. // Journal of Materials Science;May2004, Vol. 39 Issue 10, p3537 

    Investigates the effects of silicon dioxide on the zinc compound-based varistor system. Use of varistors to protect electronic circuits from voltage shock; Dependence of the degree of nonlinearity on the microstructure and electrical resistivity of the material; Preparation of the varistors by...

  • Low-voltage varistors from ZnO+CaMnO3 ceramics. Vijayanandhini, K.; Kutty, T. R. N. // Applied Physics Letters;3/20/2006, Vol. 88 Issue 12, p123513 

    Varistors prepared from ZnO with CaMnO3 perovskite as the only forming additive, exhibit voltage-limiting current-voltage characteristics with nonlinearity coefficient α up to 380 at low voltages of 1.8–12 V/mm. High nonlinearity is observed only with a suitable combination of...

  • Nonlinear property of SrCoO3-doped ZnO ceramics sintered in a reducing atmosphere and multilayer ceramic varistors with base metal electrodes. Yoshiko Higashi; Masayuki Hogiri; Eiichi Koga // Journal of Materials Research;8/14/2015, Vol. 30 Issue 15, p2300 

    This study describes the nonlinear characteristics of SrCoO3-doped ZnO varistors and multilayer ceramic varistors (MLCVs) with copper electrodes, both of which are sintered in a reducing atmosphere. Due to postannealing effects in air or N2 with low-oxygen concentration (0.02%), bulk disks can...

  • Enhanced photovoltaic properties in graphene/polycrystalline BiFeO3/Pt heterojunction structure. Zang, Yongyuan; Xie, Dan; Wu, Xiao; Chen, Yu; Lin, Yuxuan; Li, Mohan; Tian, He; Li, Xiao; Li, Zhen; Zhu, Hongwei; Ren, Tianling; Plant, David // Applied Physics Letters;9/26/2011, Vol. 99 Issue 13, p132904 

    We report the enhanced photovoltaic properties in polycrystalline BiFeO3 (BFO) thin films with graphene as top electrodes. The short circuit current density (Jsc) and open circuit voltage of the heterojunction are measured to be 25 μA/cm2 and 0.44 V, respectively, much higher than the...

  • Surface Microreliefs and Voltage—Current Characteristics of Gold Electrodes and Modified Thick-Film Graphite-Containing Electrodes. Brainina, Kh. Z.; Stozhko, N. Yu.; Shalygina, Zh. V. // Journal of Analytical Chemistry;Aug2004, Vol. 59 Issue 8, p753 

    The surface microreliefs and voltage–current characteristics of gold electrodes and modified thick-film graphite-containing electrodes were studied. The relationship between the formation of an analytical signal of mercury(II) and the surface microrelief was determined. It was found that...

  • Glass-passivation will protect surface mount devices.  // Electronics Weekly;5/25/2005, Issue 2195, p28 

    This article reports that the VJ series of varistors from AVX Corp. incorporates for added stability a glass-passivated surface to protect the device from the reactants present during PCB assembly. Zinc oxide is used in the construction of surface mount varistors. According to the supplier, with...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics