2SK170BL and 2SJ74BL

[samoloko]

Curious, this guy have 3 more like this:

200 each: RARE Toshiba 2SJ74BL and 2SK170BL TO-92 JFETS - eBay (item 250816623470 end time Jun-06-11 17:16:43 PDT)

If are real parts, someone wants to do a GB? (I want 50) :-D

I would like 50 of sj74 If they are not fake

 

[Alettagla]

To good to be true mostly often proves to be correct....

 

[ramallo]

I asked him and he posted a closeup photo on the sale page, looks ok.

If somebody is interested in a GB, I'll take 50x 74 and 50x 170

 

[ramallo]

I asked him and he posted a closeup photo on the sale page, looks ok.

If somebody is interested in a GB, I'll take 50x 74 and 50x 170

Wow! These transistors been disappeared like a candy at the door of a school

 

[Nikon1975]

Even in the local shops here in Japan, they are almost all gone.

D.

 

[canvas]

I am attaching photos of genuine parts and fakes.

Yes, those are faked ones. I still remembered the marking. There is no way that K170BL has Idss of 15~20ma. I got them from one of my source and returned.

 

[Rush]

Fake J74

I bought some J74BL from eBay and they measured Idss 11 to 20 ma.
What happens if I use them in a circuit designed for a real J74? Will they work? What are they really?

 

[prooptiki]

Wow! These transistors been disappeared like a candy at the door of a school

I saw the posted pics!
I beleive they are fake!!!! Compare them to the first picture post 16!

 

[tiefbassuebertr]

I am attaching photos of genuine parts and fakes.

The only feature, that distinguishes the genuine parts and the other is the higher resolution font. No logo isn't to find on both (also by pics from post #25) This means for me, without exact analysing of the parameters it is impossible to make a statement about the quality, reliability and long-term stability.
Or is there a feature by genuine parts as a clear visual distinction, that I have overlooked?
In the attachement various logos from Toshiba (TOKYO SHIBAURA ELECTRIC CO).
Nothing of them I notice on 2SK/2SJ small signal jFET types.

 

[finwbu]

Hi this is the guy on Ebay ho sell high IDSS 2SJ74 Fets...

NAME: alweit

eBay-Bewertungsprofil für alweit

I asking 6 month ago about 20mA Fets , after i contact Toshiba.

Toshiba never sale with IDSS 20mA SJ74BL

 

[ramallo]

I saw the posted pics!
I beleive they are fake!!!! Compare them to the first picture post 16!

I don't know, I have some real parts (170 and 74) and looks similar, I have some originals with a differences between series.

This is some of my genuine 170 and 74

But this is a genuine part as well (170GR)

 

[Bill Fuss]

Curious, this guy have 3 more like this:

200 each: RARE Toshiba 2SJ74BL and 2SK170BL TO-92 JFETS - eBay (item 250816623470 end time Jun-06-11 17:16:43 PDT)

If are real parts, someone wants to do a GB? (I want 50) :-D

I just traded messages with the seller and bought a batch. He assured me they are the real deal, I'll know when I get a chance to test them. I'll probably buy more and match them up for the forum guys.

 

[jacco vermeulen]

4oo for Dollah each, ouch.

 

[3GGG]

4oo for Dollah each, ouch.

think they are $0.50 each, you get 200 of each for $200, more have been listed.

 

[Bill Fuss]

He just doubled the price after I bought the first batch for $199. I think he went a little overboard. You might be able to negotiate with him.

 

[Russellc]

Like others, I would also be interested in a group buy for these devices.

Russellc

 

[prooptiki]

He just doubled the price after I bought the first batch for $199. I think he went a little overboard. You might be able to negotiate with him.

This photo is attached from the seller!!!

And a single genuine!

 

[Bill Fuss]

That's meaningless, they made them for years and they can look very different from batch to batch. The proof is in the pudding, I'll let you know.

 

[jacco vermeulen]

If they're not, posting pictures of box and bumper sticker along with the sale ad would make it as big a scam can get.
Me curious what the outcome is.

 

[ramallo]

If they're not, posting pictures of box and bumper sticker along with the sale ad would make it as big a scam can get.
Me curious what the outcome is.

He have a new sale:

200 pcs: RARE Toshiba 2SJ74BL (only) TO-92 JFETS | eBay