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Old 13th April 2013, 07:41 AM   #1
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Default 2SK69 datasheet?

I got some 2SK69,this VFET is made by NEC,but I can find the datasheet.anybody could help me?
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Old 13th April 2013, 10:14 AM   #2
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It has a TO-39 case, Vds of 140Volt at 100mA, 800mW dissipation with a Tj of 150C. VGs 7V max, GFS 30uS.
Hope that helps.
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Old 13th April 2013, 01:24 PM   #3
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Thanks Harleyjon,But I want to get the Id-Vds chart.anyone would help me ?
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Old 13th April 2013, 01:57 PM   #4
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Sorry, that is all I have because these are obsolete. Good luck.
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Old 14th April 2013, 11:12 PM   #5
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locky-z intelligent curve tracer, the peak dcp75 pro or any real curve tracer should help you
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Old 15th April 2013, 11:45 AM   #6
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How to test to prove it's not a fake?
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Old 15th April 2013, 12:21 PM   #7
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How do you test any other JFET ?
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Old 16th April 2013, 01:06 AM   #8
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Sorry,I don't know how to test JFET and V-FET.
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Old 16th April 2013, 12:30 PM   #9
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Difference between a Lateral MOSFET and a Vertical MOSFET is the orientation/position of the gate (+ oxide) layers.
It's a similar story for JFET's.

A regular JFET has the Gate as a parallel layer on top of the depletion zone, between Source and Drain areas on top of the substrate.
It's sorta built up as a wedding cake, in layers. (the build-up is symmetrical, the reason why Source and Drain of a JFET are interchangeable)

A VFET is actually a V-JFET, Vertical (trench) Junction (gate) FET.
The Gate area is buried, the build-up doesn't have a parallel (cake) structure, but with vertical areas. Hence the name Vertical, opposed to Lateral.

Lateral and Vertical MOSFETs behave somewhat differently, but operate in the same way.
Same story for JFET's and VFET's.

A K69 does a drain current of 100mA, so it's a Power JFET, but it handles 800mW max.
A regular N-channel JFET as e.g. K147 can do up to 30mA Idss, but handles 600mW.

In both cases, to test them, their dissipation should stay below the 800mW, respectively 600mW, otherwise it's all the same.
Means you should just read how to test a JFET, do a search, plenty measuring set-up sketches posted.
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Last edited by jacco vermeulen; 16th April 2013 at 12:40 PM.
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Old 16th April 2013, 12:34 PM   #10
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First of all, they are so much of a niche that I doubt it is a fake. Anyway, it should test as a jfet.
Second, on the curve tracer you should see a triode-like curves, that will confirm that is a V-fet.
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