Improved Leakage Current, Output Power, and Electrostatic Discharge Characteristics of GaN LEDs by Chemical Etching

2009 ◽  
Vol 12 (1) ◽  
pp. D3 ◽  
Author(s):  
Tae-Young Park ◽  
Chang-Hee Cho ◽  
Il-Kyu Park ◽  
Seong-Ju Park
Keyword(s):  
Leakage Current ◽  
Output Power ◽  
Chemical Etching ◽  
Electrostatic Discharge ◽  
Discharge Characteristics ◽  
Current Output

scholarly journals Improvement on Leakage Current Performance of Semiconductor IC Packages by Eliminating ESD Events

2018 ◽  
Vol 6 (5) ◽  
Author(s):  
Frederick Ray Gomez
Keyword(s):  
Product Quality ◽  
Leakage Current ◽  
Integrated Circuit ◽  
Six Sigma ◽  
Electrostatic Discharge ◽  
Assembly Process ◽  
Technical Paper ◽  
High Leakage Current ◽  
Better Than

The technical paper discusses the reduction of high leakage current failures of semiconductor IC (integrated circuit) packages by eliminating the ESD (electrostatic discharge) events during assembly process and ensuring the appropriate machine grounding and ESD controls.  It is imperative to reduce or ideally eliminate the leakage current failures of the device to ensure the product quality, especially as the market becomes more challenging and demanding.  After implementation of the corrective and improvement actions, high leakage current occurrence was reduced from baseline of 5784 ppm to 1567 ppm, better than the six sigma goal of 4715 ppm.

scholarly journals Effect of Ice Shedding on Discharge Characteristics of an Ice-Covered Insulator String during AC Flashover

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2440
Author(s):  
Xiangxin Li ◽  
Ming Zhou ◽  
Yazhou Luo ◽  
Gang Wang ◽  
Lin Jia
Keyword(s):  
Leakage Current ◽  
Discharge Characteristics ◽  
Fundamental Component ◽  
Ceramic Insulator ◽  
Flashover Voltage ◽  
Arc Shape ◽  
Surface Discharges ◽  
Ieee Standard ◽  
Ice Shedding ◽  
Indeterminate Variation

Considering the ice shedding phenomena on ice-covered outdoor insulators, this paper conducted the artificial experiments by using a five-unit suspension ceramic insulator string covered with wet-grown ice to investigate the effects of ice shedding on the icing discharge characteristics. According to IEEE Standard 1783/2009, the minimum flashover voltage (VMF), propagation of discharges to flashover and related leakage current (LC) were measured. It was found that VMF after ice shedding can be increased by about 17% as compared with that before ice shedding. The initiation and formation of discharge arcs across ice-free regions caused by ice shedding become difficult, showing an unstable propagating path, indeterminate arc shape and longer arc column. Although VMF under ice shedding conditions is higher than that without ice shedding, the fundamental component, and harmonics show lower amplitudes for the latter case. The ratios of harmonics to the fundamental are well in accordance with discharge characteristics during the flashover for which the ratios show a relatively stable varying tendency in the absence of ice shedding, but show changeable and indeterminate variation under ice shedding conditions. The obtained results are helpful to understand the icing state and its influence on surface discharges for preventing the icing flashovers.

Output Characteristics Study of V-trough PV Concentration System

2011 ◽  
Vol 71-78 ◽  
pp. 2077-2080 ◽  
Author(s):  
Cui Qiong Yan
Keyword(s):  
Output Power ◽  
Short Circuit ◽  
Maximum Output Power ◽  
Open Circuit ◽  
Maximum Output ◽  
Water Cooling ◽  
Cell Array ◽  
Pv System ◽  
Current Output ◽  
Super Cell

A V-trough PV system with polysilicon cell array and super cell array has been constructed and tested. Open-circuit voltage, short-circuit current, output power, fill factor and influence of temperature on V-trough PV concentration system have been analyzed. The results indicate that the output power of 10 pieces of polysilicon cell array is 6.198W and it is 1.21 times as that of non-concentration condition. Maximum output power of V-trough PV system with water cooling increase to 8.28W and power increment rate reach 62.67% compared with the non-concentration PV system. For the super cell array with no water cooling, the maximum output power of V-trough PV system varies from 7.834W to 14.223W. The results of this work provide some experimental support to the applications of the V-trough PV system.

scholarly journals Research on electrostatic discharge characteristics of tunnel field effect transistors

2014 ◽  
Vol 63 (17) ◽  
pp. 178501
Author(s):  
Wang Yuan ◽  
Zhang Li-Zhong ◽  
Cao Jian ◽  
Lu Guang-Yi ◽  
Jia Song ◽  
...  
Keyword(s):  
Field Effect ◽  
Electrostatic Discharge ◽  
Field Effect Transistors ◽  
Discharge Characteristics
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