Abstract
In the 2-D BJT simulation, the BJT device can be treated as two parts. One is the intrinsic (internal) BJT and the other is the extrinsic (parasitic) BJT. The extrinsic BJT effect is the factor that affects the current gain of the 2-D BJT model. To study the extrinsic BJT effect, we propose the branch-cut method to define and calculate the current components of the intrinsic and extrinsic BJTs. The current gain of the 2-D BJT model (β) will depend on the intrinsic base current ratio (IB1/IB), the current gain of the intrinsic BJT (β2), and the current gain of the extrinsic BJT (β1). When the extrinsic BJT effect becomes stronger in the 2-D BJT simulation, IB1/IB will become smaller, and therefore β will decrease. In this paper, we will study the 2-D BJT simulation with the different geometric parameters and the recessed-base structure. According to these simulation results, we can verify that β will decrease by the extrinsic BJT effect.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
