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  • Breakdown analysis of a power transformer terminal lead
    For dielectric breakdown analysis, a common procedure is applied which is based on obtaining the field data from FE electrostatic field analyses. This article uses the simulation of a shielding ring and terminal lead of a typical power engineering transformer as an example.
  • Effects of Deposition Method of PECVD Silicon Nitride as MIM Capacitor Dielectric for GaAs HBT Technology
    film is shown to have significantly superior and higher dielectric breakdown voltage and lower leakage current characteristics, as compared to the single layer film, while the capacitance density is found to be similar. Additionally, the multi-layer Si3N4 film is shown to have lower compressive stress
  • The Megger Guide to Oil Breakdown Dielectric Testing
    Oils that combine a high flashpoint with high dielectric strength have long been used as an insulating medium in. transformers, switchgear and other electrical apparatus. To ensure that the dielectric strength of the oil does not. deteriorate however, proper maintenance is essential, and the basis
  • The Effect of Moisture on the Breakdown Voltage
    Power transformers utilize oil as a heat transfer medium and a dielectric material, together with cellulose. Breakdown voltage (dielectric strength) is one of the most important parameters of transformer oil. It is measured when the transformer is taken into use and typically monitored by sampling
  • ALD HfO2 and Al2O3 as MIM Capacitor Dielectric for GaAs HBT Technology
    25 to 150oC, the breakdown voltage of both films decreased, while the leakage current increased. These results show that both ALD HfO2 and Al2O3 are. compatible with, and suitable as MIM capacitor dielectric in GaAs HBT technology and can be adjusted to meet the specific application
  • A Roadmap for SiC Power Modules and Diodes
    The continual drive for greater efficiency and power density in power conversion systems is leading to the expanded use of silicon carbide (SiC). This wide-bandgap semiconductor has a dielectric breakdown capability 10 times that of silicon with excellent thermal conductivity.
  • Electron Trapping in Polymer Insulators
    molecular properties, space charge and insulation failure. The presence of space charge in the polymeric insulation of high-voltage cables is correlated with dielectric breakdown. The
  • Application Note - Effect of Solder Reflow on Secure(R) Adhesive
    expansion between the different substrates cause stress within the adhesive layer. The ability of Secure TM 1500FG to deal with this stress is determined as the difference in before and after values of adhesion strength, thermal impedance, and dielectric breakdown strength. It is shown that Secure TM
  • Arc Tracking and Silicone Self-Fusing Tape
    Many electrical insulation applications are designed with dielectric breakdown strength (DBS), or the voltage potential required to break through an electrically insulating material, as a major factor. While this is a good test to determine how resistive a material is through its volume it does
  • AN0005 Mechanical Cracking
    dielectric breakdown leading to capacitor failure in service. Mechanical cracks are created by excessive mechanical stress after the capacitors have been soldered onto the substrate. Excessive mechanical stress can be the result of the following: *?Exceptional Circumstances _ Interference fit
  • AN0022 Open Mode Capacitors
    assembly test. Over time, moisture penetration into the crack can cause a reduction in insulation resistance and eventual dielectric breakdown leading to capacitor failure in service.
  • Impulse Testing and Turn Insulation Deterioration in Electric Motors
    a failure. Following the failure, additional testing investigated the possible deteriorating effects on turn-turn insulation due to impulse testing beyond the motor's dielectric breakdown. Unplanned downtime of industrial processes is very expensive, frequently with costs exceeding tens of thousands
  • AN0001 Polymer Termination
    dielectric breakdown leading to capacitor failure in service. In order to reduce the possibility of mechanically cracking multilayer ceramic capacitors Syfer in conjunction with customers has been actively developing a new termination material. This termination is a silver loaded epoxy polymer

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