[sdiy] stupid ebers-moll question

[ASSI]

On Dienstag, 28. März 2006 18:51, Karl Ekdahl wrote:
> Hi kids, i'm trying to learn how to use the Ebers-Moll
> equation and i have a problem. The Is parameter.

Get a spice model for a bipolar and read out the parameter from there. 
Example fromthe 700 series library from Array Design:

.MODEL N1 NPN IS=3.8E-16 LOT/UNIFORM=50% DEV/GAUSS=1%
+ BF=220 LOT/1/UNIFORM=50% DEV/GAUSS=1% BR=0.7
+ ISE=1.8E-16 IKF=17E-3 NK=0.75 IKR=3E-2 NE=1.4 VAF=60
+ VAR=7 RC=63.4 RB=300 RE=19.7 XTB=1.17 XTI=5.4
+ TF=1.5E-10 TR=6E-9 XTF=0.3 VTF=6 ITF=5E-5 CJE=0.21E-12
+ MJE=0.33 VJE=0.7 ISC=5E-12 KF=2E-13 AF=1.4
.MODEL P1 PNP IS=1E-15 BF=100 CJE=0.175E-12 XTI=5.4
+ MJE=0.38 VJE=0.6
.MODEL DZ D IS=1E-16 RS=250 BV=5.9 LOT=0.3 DEV=0.05
+ TBV1=1.8E-4 VJ=.6 M=0.5 IBV=10UA EG=1.11 XTI=3 N=1.75


Achim.
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