Projeto de dispositivo supressor de surto de tensão / Design of voltage surge protective device

AUTOR(ES)

Roberto Lacerda de Orio

DATA DE PUBLICAÇÃO

2006

RESUMO

This work intends to design a voltage surge suppressor device for telecommunications equipments. The project was conducted with the help of simulation tools. The physical parameters like dopings and dimensions, as well as structures with and without emitter­ shorts were studied in order to understand their influence on the device behavior and to establish in which conditions its best performance is obtained. Based on these simulation results, a simple fabrication process for line production was developed. The final device presented a breakover voltage of 250 V when a current pulse of 100 Alcm2 was applied. After the device turn-on the most uniform distribution of current density was observed for a structure with emitter-shorts non-centralized on the emitter device area

ASSUNTO(S)

tiristores overvoltage semiconductor semicondutores simulação (computadores) sobretensão simulation thyristors

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