Transistor component having an integrated emitter resistor

US5990539A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Conzelmann · Echterdingen, DE
• Heinz Pfizenmaier · Leonberg, DE
• Wolfgang Appel · Kelkheim, DE
• Volker Dudek · Ditzingen, DE
• Helmut Schneider · Hersbruck, DE

Key dates

• Filing date: Aug 5, 1998
• Grant date: Nov 23, 1999
• Expiry date: Aug 5, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D84/125

Abstract

A transistor component is suited for controlling large currents, even given high frequencies. The transistor component includes integrated emitter resistors which are arranged between partial-emitter regions and emitter-metal contacts. The integrated emitter resistors cause a stabilized, uniform current distribution both over the various partial-emitter regions, and within the partial-emitter regions, and bring about an improved current carrying capacity, as well as improved high-frequency properties, particularly in view of the finite magnitude of the extrinsic base resistance.