Patent · US Expired

Semiconductor element and method for producing the same

US4686557A · kind A · utility

11Cited by
4References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 28, 1984
Grant dateAug 11, 1987
Priority date
Expiry dateDec 28, 2004

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH10D62/177

Abstract

Semiconductor element, including at least one bi-polar power transistor having parallel-connected transistor regions, active and contacted partial base zone regions, an emitter zone-base zone pn-junction, and base barrier resistances disposed between the active base regions at the emitter-base pn-junction and the contacted base regions, the greater part of the base current being conducted through the base barrier resistances and the voltage drop over the emitter region being small compared to the voltage between the active base region and the contacted base region.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.