FS Vfets 2sk60/2sj18 pair and 2sk79

[Tape Echo]

They shouldn't read so low or in both directions...****.

 

[joshvi]

Very little chance to survive.
if one failed ,other one will also get damaged. Please be care full if you plan to go for repair. 4650 power supply have some issues. Most vfet failures are due to power supply issues. Modifications are required

 

[Rodeodave]

Hi joshvi, I'm interested in two pairs of 2sk60/2sj18 VFETs, are they still available?

 

[joshvi]

Hi Rodeodave,

you got PM

 

[joshvi]

Yesterday I bought 10 pairs 2sk60/2sj18 , 10 2sk60 singles and 5 2sk79 pairs from japan. some are reserved. remaining are available for sale. price 75USD for 2sk60/2sj18 pair,35 USD for 2sk60 single and 35USD for 2sk79 pair.

 

[arthurhamon]

Hi Joshvi, you got PM

 

[joshvi]

Replied

 

[joshvi]

some 2sk60 singles and few 2sk79 pairs are available. Sorry no 2sk60/2sj18 pair

 

[rdelaplaza]

About whay you call "grade" or what SONY calls "range"

check the picture, SONY technical bulletin No. 49

 

[arthurhamon]

Hi do you have rank 57 on 2SK60 or 2SJ18 ?

Thanks

 

[joshvi]

Hi Arthur,

Sorry for late reply. No 57 rank devices. Rank 52,53,55,56,34,35,36,26,28 are available.Some of them are used.

 

[sdaudio2]

Re:2SK60 AVAILABILITY

Hello Sir...any usable 2sk60's for myTA- 4650?

 

[joshvi]

Sdaudio2,
yes, PM the details.

BR
Joshvi

 

[Jackylama]

Hello Joshvi, I just replied to your PM.
BR
Jackylama

 

[joshvi]

Hi Jackylama,

You got PM

BR
Joshvi

 

[overpower]

One question about this V-FET.

I have some 2SK60/2SJ18 and if i want test them - can I do it with AVR tester?
If yes - what range remain parameters what i can read?
I have 2SJ18 j54 rank and 2SK60 jh55 rank.
Low power 2SK79 and Russian made VET i can measure but seems that higher power FETs not, does anyone have experience?
Has someone are measure them with AVR tester?

 

[joshvi]

AVR tester? Do you mean AVR based transistor tester? may useful for low power jfets. but Vfet need higher vgs and Id. May not work

 

[overpower]

AVR tester? Do you mean AVR based transistor tester? may useful for low power jfets. but Vfet need higher vgs and Id. May not work

Yes, like this

http://ceezblog.info/images/blog/avr-ttester-st7735.jpg


I think what this shown when measure 2SJ18/2SK60 ?

I think that maybe this not work very well but if I measure very high power MOSFET then i get some parameteres.
But I dont know why this VFET not give a result, maybe they are destroyed.
I know that 2SK79 give 100% readings.

 

[joshvi]

You can test small vfets and jfets using this tester, but high Vp (-15 to -25) vfets like 2sk60 may not be tested by this.

You can check vfets using a multimeter. Put multimeter in resistance measurement mode. measure resistance between drain to source , it will be less than 2 ohms. Change multimeter to diode test mode, measure between gate to source and gate to drain conductivity. If It shows as diode then vfets are okay.

 

[altern]

Hello josvi, I am interested in both 2sk60 and 2sk79.
Can you measure the Vgs cut-off voltage at +30Vds voltage?
Cheers,