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Star-Hspice Quick Reference Guide

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LEVEL 6 Philips Bipolar Model<br />

Parameters Unit Default Description<br />

XEXT - 0.5 Part of I EX ,Q EX ,Q<br />

TEX and I SUB that<br />

depends on the basecollector<br />

voltage<br />

VBC1<br />

QBO C 1.2e-12 Base charge at zero<br />

bias<br />

ETA - 4.0 Factor of the built-in<br />

field of the base<br />

AVL - 50. Weak avalanche<br />

parameter<br />

EFI - 0.7 Electric field intercept<br />

(with EXAVL=1)<br />

IHC A 3.e-3 Critical current for hot<br />

carriers<br />

RCC ohm 25. Constant part of the<br />

collector resistance<br />

RCV ohm 750. Resistance of the<br />

unmodulated epilayer<br />

SCRCV ohm 1000.0 Space charge<br />

resistance of the<br />

epilayer<br />

SFH - 0.6 Current spreading<br />

factor epilayer<br />

<strong>Star</strong>-<strong>Hspice</strong> <strong>Quick</strong> <strong>Reference</strong> <strong>Guide</strong> 7-13

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