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Old 10th May 2013, 03:19 AM   #1
profun is offline profun  China
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Default 2SK69 SPICE model?

Anyone could send me the 2SK69 spice model file?
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Old 10th May 2013, 06:20 AM   #2
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This is a very old VFET. Not even datasheets are available.
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Old 10th May 2013, 10:26 AM   #3
ilimzn is offline ilimzn  Croatia
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Profun, where did you get this part?
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Old 11th May 2013, 02:57 AM   #4
profun is offline profun  China
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Quote:
Originally Posted by ilimzn View Post
Profun, where did you get this part?
It's very hard to find this part,But I bought more than 15 of then.
Do you want to buy it?
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Old 11th May 2013, 07:20 AM   #5
profun is offline profun  China
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Finding SPICE tube model parameters
Anyone would help me?
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Old 11th May 2013, 08:20 AM   #6
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Quote:
Originally Posted by profun View Post
That is an interesting page about making your own models for tubes. It still assumes you have accurate data for the device you wish to model.

Ilimzn asked where you bought the 2SK69 VFETs and I am asking for a datasheet so that others have a basis for a model, if someone is prepared to make one. Do you have full specifications for 2SK69?
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Old 11th May 2013, 08:48 AM   #7
profun is offline profun  China
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[2SK69]
VGDO:140V
VGSO:30V
VDSX:-140V
ID:-100mA
IG:-20mA
PT:800mW
Tj:150℃
Cis(pF):28
Igss:-10uA
mu:10min,30typ
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Old 11th May 2013, 10:05 AM   #8
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Thanks, but for SPICE, you need more than basic specifications.
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Old 12th May 2013, 01:29 PM   #9
profun is offline profun  China
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Quote:
Originally Posted by Ian Finch View Post
Thanks, but for SPICE, you need more than basic specifications.
What specifications should I need?
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Old 12th May 2013, 04:47 PM   #10
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If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.

Unfortunately, no datasheet = no model possible.

Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/e...s/CH9_FETs.pdf
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