JFET Spice models

ucetnahranie — Wed, 27 Mar 2019 07:47:17 GMT

Hi,

I would like to ask, whether it´s possible (and if so, where) to get Spice models for following JFET transistors:

BFR31

BF556A

BF861A

Re: JFET Spice models

LPP — Thu, 28 Mar 2019 09:33:41 GMT

I found these definitions:

*PHILIPS SEMICONDUCTORS        Version: 1.0
*Filename: BFR31.PRM         Date: Oct 1992
*
.MODEL BFR31   NJF
+             VTO = -1.0686E+000
+            BETA = 1.73071E-003
+          LAMBDA = 2.29157E-002
+              RD = 9.05115E+000
+              RS = 9.05115E+000
+              IS = 1.70538E-016
+            CGS = 2.20000E-012
+            CGD = 2.20000E-012
+              PB = 9.78591E-001
+              FC = 5.00000E-001
*Parameter with default value: FC

*PHILIPS SEMICONDUCTORS        Version 1.0
*Filename: BF556A.PRM       Date: Jan 1993
*
.MODEL BF556A   NJF
+             VTO = -2.1333E+000
+            BETA = 1.06491E-003
+          LAMBDA = 1.68673E-002
+              RD = 1.41231E+001
+              RS = 1.41231E+001
+              IS = 3.50865E-016
+            CGS = 2.10000E-012
+            CGD = 2.30000E-012
+              PB = 7.73895E-001
+              FC = 5.00000E-001
*Parameter with default value: FC

* BF861A NJF model
* created using Parts release 6.2 on 07/20/95 at 14:54
* Parts is a MicroSim product.
.MODEL BF861A NJF
+ VTO=-.5111
+ BETA=15.19E-3
+ LAMBDA=35.93E-3
+ IS=410.2E-18
+ ALPHA=1.000E-6
+ VK=1
+ RD=4.164
+ RS=4.164
+ CGD=6.299E-12
+ CGS=6.299E-12
+ PB=.6917
+ KF=21.54E-18
+ AF=.7958
+ BETATCE=-.5
+ VTOTC=-2.500E-3
*

Have a great day,

Pavel
TIC

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Re: JFET Spice models

ucetnahranie — Thu, 28 Mar 2019 11:35:32 GMT

Thank you very much for your response Pavel. Have a nice day!

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