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Star-Hspice Quick Reference Guide

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BJT Model Parameters<br />

Transit Time Parameters<br />

Name (Alias) Unit Default Definition<br />

ITF (JTF) amp 0.0 TF high-current<br />

parameter<br />

PTF ° 0.0 Frequency multiplier<br />

to determine excess<br />

phase<br />

TF s 0.0 Base forward transit<br />

time<br />

TR s 0.0 Base reverse transit<br />

time<br />

VTF V 0.0 TF base-collector<br />

voltage dependence on<br />

coefficient<br />

XTF - 0.0 TF bias dependence<br />

coefficient<br />

See “Using Transit Time Parameters” in the <strong>Star</strong>-<strong>Hspice</strong><br />

Manual.<br />

Noise Parameters<br />

Name (Alias) Unit Default Definition<br />

AF - 1.0 Flicker-noise exponent<br />

KF - 0.0 Flicker-noise<br />

coefficient<br />

<strong>Star</strong>-<strong>Hspice</strong> <strong>Quick</strong> <strong>Reference</strong> <strong>Guide</strong> 7-9

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