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From: mark@mips.COM (Mark G. Johnson)
Newsgroups: comp.lsi.cad
Subject: Re: SPICE probs
Message-ID: <17979@obiwan.mips.COM>
Date: 23 Apr 89 20:07:04 GMT
References: <38973@bbn.COM>
Reply-To: mark@mips.COM (Mark G. Johnson)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 29

In article <38973@bbn.COM> slackey@BBN.COM (Stan Lackey) writes:
 >From a SPICE neophyte...
 >
 >I am trying to make a model for a schottky diode.  I set the eg parameter
 >to .69 as stated in the manual, but the model continues to behave as a
 >regular silicon diode.  What else must I do?
 >
 >I am using HSPICE on Sun.
 >Thanks. -Stan



No guarantees of course, but you might find these helpful:

	* 1N4150 (a very fast silicon diode)
	.MODEL   Dsil      D(  RS=1.16   IS=2E-14
	+                      EG=1.11   CJO=2.5P
	+                      N=1.0     M=0.5
	+                      PB=0.6    TT=2.6E-9)
	*
	* MBD101 schottky diode
	.MODEL   Dsch      D(  RS=2.00   IS=2E-14
	+                      EG=0.69   CJO=1.5P
	+                      N=1.0     M=0.5
	+                      PB=0.4    TT=1.0E-9)
-- 
 -- Mark Johnson	
 	MIPS Computer Systems, 930 E. Arques, Sunnyvale, CA 94086
	...!decwrl!mips!mark	(408) 991-0208