- Home
- Design & Build
- Software Tools
- 2SK209/2SJ106 SPICE models?

You should upgrade or use an alternative browser.

- Thread starter Mr Evil
- Start date

Mr Evil said:

I still need a model for 2SK209, if anyone has one.

I don't, but I have the datasheet, if that helps.

Mr Evil said:I don't know why they don't have any models for their devices there too.

Don't know either, but those "exotic" transistors are often hard to find too. Not sure who sells them...

I bet you could write a Spice model yourself from the data in the datasheet. N-JFETs are a base model in Spice, so you kinda only have to put the right parameters, and there you go. I'm not too keen on that, but maybe someone can help you with that...

Thanks.

I still need a model for 2SK209, if anyone has one.

Me too. Anyone found/made one in the last 10 years? This thread is the first google result.

+ beta = 0.021 lambda = 6.15e-3 rd = 12.194

+ rs = 16.746 is = 2.613e-15 cgd = 1.458e-11

+ cgs = 1.478e-11 pb = 0.3754

+ fc = 0.5 N = 1

Patrick

And of course they will only provide models of active products.

Patrick

2SJ106 is just an SMD version of 2SJ103.

Patrick

Thank you Patrick. Are these reasonable, or do you have better values?

.model 2SK209BL njf vto = -0.7869

+ beta = 0.021 lambda = 6.15e-3 rd = 12.194

+ rs = 16.746 is = 2.613e-15 cgd = 1.458e-11

+ cgs = 1.478e-11 pb = 0.3754

+ fc = 0.5 N = 1

.MODEL 2SJ103BL PJF (BETA=898.438U IS=10F RD=200 CGD=11.9398P CGS=14.4P)

2SJ106 is just an SMD version of 2SJ103.

Patrick

In terms of closest Idss match, which n channel is closest in the same sot package? It's not obvious

.model 2SK209GR NJF ; keantoken 2020

; Data from luvdunhill at DIYAudio.com

; Id is low below <-450mVgs due to model.

+ Beta=21.85m Vto=-0.5359 Rd=12.194

+ Rs=13 Is=2.613f Cgd=14.58p Cgs=14.78p

+ Pb=0.3754 Fc=0.5 N=1 Kf=0.014f

+ Lambda=6.15m Mfg=Toshiba

- Home
- Design & Build
- Software Tools
- 2SK209/2SJ106 SPICE models?