Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!rutgers!ames!ucbcad!ucbvax!scarolina.CSNET!HILBORN
From: HILBORN@scarolina.CSNET.UUCP
Newsgroups: comp.lsi
Subject: SPICE PARAMETERS
Message-ID: <8702121036.AA06527@zarathustra.think.com>
Date: Wed, 11-Feb-87 12:53:00 EST
Article-I.D.: zarathus.8702121036.AA06527
Posted: Wed Feb 11 12:53:00 1987
Date-Received: Fri, 13-Feb-87 21:47:28 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 16

In attempting to use SPICE to analyse bipolar circuits, I find that I am
unfamiliar with some of the bipolar transistor model parameters listed in 
the SPICE 2G.1 Users Guide.  I was wondering if anyone might be able to 
refer me to the appropriate documents in which I might find an illuminating 
discussion in regard to the following parameters:

    (1) "RBM" and "IRB", used in the equations for the base resistance.

    (2) "XTF", "ITF", "VTF", and "PTF", used in the equations for the 
    effective transit time, "TFF".

I will certainly appreciate any information provided in this matter.

Thank you.

Sam Hilborn   (HILBORN@SCAROLINA.EDU)