The Designer's Guide Community Forum https://designers-guide.org/forum/YaBB.pl Modeling >> Semiconductor Devices >> spreading on VBE for a bipolar https://designers-guide.org/forum/YaBB.pl?num=1148399217 Message started by horizon on May 23rd, 2006, 8:46am

Title: spreading on VBE for a bipolar Post by horizon on May 23rd, 2006, 8:46am Hello, I would like to have a piece of advice for a small problem i have. here it is. I am using model for bipolar pnp transistor, those transistors are horizontal device that we get for free, I mean they are not optimized . the beta is rather low. The sigma on the Vbe that I calculate is about 20uV...using sigma=Avbe/sqrt(WL) is it possible? I mean, for a vbe which is changing by 2mV/°C it means that the measurments have been done on bipolar with less that 0.01 °C difference (without considering the mismatch caused by process....) does somebody can give me a value for AVBE ? thank you a lot for feedback                                Horizon

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