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ElectroComponent Science and Technology - Volume 8 1981, Issue 3-4, Pages 229-233

Sanken Electric Co., Ltd., 3-6-3 Kitano, Saitama, Niiza, Japan

Copyright © 1981 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In the course of the development of hybrid voltage regulators for automobile use, increasing the reverse blockingvoltage with decreasing of saturation voltage for output power darlington transistors, the capability of monolithic ICchip against surge pulses generated in cars, and an improvement of the pattern design of thick film in order towithstand temperature cycling, have been important subjects. Power darlingtons have more than 150 V of reversevoltage as well as large secondary breakdown capacity and less than 1.2 V of saturation voltage. A monolithic chiphaving small saturation voltage and more than 500 mA of surge current capability, has been developed. Aneck-shaped thick film pattern was developed to make soldering in a controlled manner. The problems in the earlierstage with surge current and temperature cycling have been almost solved by these improvements.

In this paper the characteristics of the transistor and the monolithic chip the structure of the device and relatedproblems observed in temperature cycling are described.

Autor: Akihiro Sawamura, Tadashi Takahashi, and Sei-Ichi Denda

Fuente: https://www.hindawi.com/


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