2sc3358 transistor nonlinear model

时间：04-06 整理：3721RD 点击：

hi.
i want simulate a oscillator circuit with NEC2sc3358 transistor in ADS,but i don't have nonlinear model (parasitic internal capacitances and inductances) of it.can anyone help me?it has a datasheet in internet that only have voltage and current characteristics...
or what transistor work likely NEC 2sc3358?

Dear ghasem
Hi
I can't help you in ADS but if you want i can help you in Ps pice .
Best Wishes
Goldsmith

When you try Google search and type "2sc3358.lib" you find this:
http://www.madlabo.com/mad/edat/spice/qnom/2sc3358.lib

Are you sure it is NEC? You need the NEC part number but I cannot find it. The 2SC3357 is the NE85634 and this is the model:

Code:

***  Part: 2SC3357/NE85634  ***
***  Type: BJT   	     ***
***  Version: Ver.1.3        ***
***  Date: 2002/12/16        ***
***  Create: NECxxxxx        ***
***   10V 3GHz              ***

.SUBCKT q2SC3357_v13 7 8 9

 Ccb  2 5 250e-15
 Cce  2 6 80e-15
 Cbe  7 9 150e-15
 Cb   1 2 50e-15
 Ce   2 3 50e-15
 Lb   5 7 1.25e-9
 Lc   2 8 0.5e-9
 Le   6 9 1.6e-9
 Lb2  1 5 0.01e-9
 Le2  3 6 0.01e-9
 Qnpn 2 1 3 q2SC3357_v13_M

.MODEL q2SC3357_v13_M NPN
+(IS=684.2e-18 BF=161.1 NF=1.0 VAF=51
+ IKF=574.6e-3 BR=10.71 NR=1.0 VAR=2.1
+ IKR=28.05e-3 ISE=1.0e-18 NE=1.193 ISC=6.211e-18
+ NC=1.1 RB=3.0 IRB=75.9e-5 RBM=1.0
+ RE=2.67 RC=3.5 CJE=1.847e-12 VJE=1.014
+ MJE=464.8e-3 CJC=1.086e-12 VJC=617.4e-3 MJC=353.8e-3
+ XCJC=0.1 CJS=0 VJS=0.75 MJS=0
+ FC=0.50 TF=23e-12 XTF=0.39 VTF=0.668
+ ITF=0.06 TR=0 PTF=20 EG=1.11
+ XTI=3.0 XTB=0)

.ENDS q2SC3357_v13

NEC transferred their RF business to CEL. They have an ADS design kit but only for current devices I suspect, and only if you know the NEC part number: http://www.cel.com/product.do?comman...hTools&group=4

Keith.

hi keith.how are you?thank you for your attention.yes,I'm sure.my transistor model is NEC2SC3358.but i couldn't find it in internet.it has a simple electrical characteristics,but doesn't have parasitic elements.how find equivalent circuit and noise model of NEC2SC3358?

- - - Updated - - -

hi keith.how are you?thank you for your attention.yes,I'm sure.my transistor model is NEC2SC3358.but i couldn't find it in internet.it has a simple electrical characteristics,but doesn't have parasitic elements.how find equivalent circuit and noise model of NEC2SC3358?

I guess it must be old then - I cannot find it in my NEC data but it only goes back about 10 years. CEL won't be much help I suspect - they don't list equivalents even for NEC devices.

Possible equivalents are MRF571/2/3. The datasheet is here: http://www.datasheetcatalog.org/data...ola/MRF571.pdf

A model for the MRF571 is:

Code:

.MODEL MRF571/MC              NPN   (                       IS    =1.93E-15
+BF   =120                    NF    =1.011                  VAF   =37
+IKF  =0.2                    ISE   =1.91E-14               NE    =1.97
+BR   =39                     NR    =1.01                   VAR   =10
+IKR  =0.02                   ISC   =7.01E-17               NC    =0.986
+RB   =11                     IRB   =2.6E-4                 RBM   =6.3
+RE   =0.51                   RC    =0.650                  TF    1.065E-11
+XTF  =1                      ITF   =0.15                   VTF   =100
+PTF  =0                      TR    =1.0E-9                 CJE   =3.78E-12
+VJE  =0.786                  MJE   =0.338                  FC    =0.5
+CJC  =1.90E-12               VJC   =0.496                  MJC   =0.274)

Keith

Why don't you use the SPICE model that I linked to above (post #3) ?

Code:

.model Q2SC3358 NPN(Bf=120 Br=1 Is=16f Eg=1.11 Cjc=0.5p Cje=0.75p Vaf=200
+               Tf=23p  Tr=2n  Mjc=.330  Vjc=.75  Mje=.33  Vje=.75 
+               Cjs=1p )

hi to all.thank you keith and volker.i used from another transistor.
dear volker,I need to parasitic elements,such as collector-base,emitter base,collector-emitter capacitances.really internal equivalent circuit of NEC2SC3358.but i coulden't find any model.your model is very basic and is not full for a good simulation in ads.

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