I have bought the 2SK216 from Farnell and it has following markings on the TO220 package (from renesas)
J117
1 A1
At the begining I thought it is an error and that they have send me the 2SJ117. I called them and after the "exchange" of goods I'v got the same J117 I called the customer/technical support and they told me that they look in to it. No reply still.... So I thought some of you could help me.
Am I wrong to think that they send me the SJ117?
Since one is p channel and the other n is there a simple non destructive test to verify my claims? The MOS is 8$ a piece and I do not want to destroy it.
Thank you in advance,
Pred
J117
1 A1
At the begining I thought it is an error and that they have send me the 2SJ117. I called them and after the "exchange" of goods I'v got the same J117 I called the customer/technical support and they told me that they look in to it. No reply still.... So I thought some of you could help me.
Am I wrong to think that they send me the SJ117?
Since one is p channel and the other n is there a simple non destructive test to verify my claims? The MOS is 8$ a piece and I do not want to destroy it.
Thank you in advance,
Pred
No, you are not wrong, the label is clear: J117 = 2SJ117 and 2SK216 should read K216. Someone mixed up the parts.pred said:Am I wrong to think that they send me the SJ117?
Since one is p channel and the other n is there a simple non destructive test to verify my claims?
/Hugo
Test to verify P or N channel:
You'll need to whip up a test jig to do this.
You'll need a variable voltage supply, something like 0-12 volts.
connect an ohmmeter to Drain and Source .
Connect the negative of power supply to source.
Set power supply to minimum voltage ( below 2V)
connect positive of supply to gate through a 100 ohm resistor.
slowly increase PS voltage and note ohmmeter reading.
if Ohms reading drops as gate voiltage increases, you have an N-channel fet.
to test for the P-channel fet, you reverse the Power supply polarities and repeat.
Adrian
You'll need to whip up a test jig to do this.
You'll need a variable voltage supply, something like 0-12 volts.
connect an ohmmeter to Drain and Source .
Connect the negative of power supply to source.
Set power supply to minimum voltage ( below 2V)
connect positive of supply to gate through a 100 ohm resistor.
slowly increase PS voltage and note ohmmeter reading.
if Ohms reading drops as gate voiltage increases, you have an N-channel fet.
to test for the P-channel fet, you reverse the Power supply polarities and repeat.
Adrian
Thanks a lot!
We have a probe station that can test the transistors but for me it seemed to much work just to verify one trnsistor. I did it your way and it proved to be p chanel MOS not n as 2SK216 should be.
Now for me what rests is to wait on farnell and negociate at least couple of good ones for my trouble
We have a probe station that can test the transistors but for me it seemed to much work just to verify one trnsistor. I did it your way and it proved to be p chanel MOS not n as 2SK216 should be.
Now for me what rests is to wait on farnell and negociate at least couple of good ones for my trouble
Small chance for something like that.
Anyway just to finish the whole story. They have found out I was right. They contacted Renesas and they confirmed that the transistor in question is 2SJ117 p chanel. Now, in their stock in Leeds the do not have anymore 2SK216 and I have to wait, as well as my small DIY project It seems that japanese transistors are rare in Switzerland. I have found one small seller that is even more expensive than Farnell (wanted like 15$ per transistor).
But, since I am doing my tube preamp for almost 1 year now (stupid decision to have remote controle) 'cos of lack of spare time I am getting use to it. Sometimes I think I should go to some shops by regular HiFi and quit the whole busines.
Again thanks a lot for help
Anyway just to finish the whole story. They have found out I was right. They contacted Renesas and they confirmed that the transistor in question is 2SJ117 p chanel. Now, in their stock in Leeds the do not have anymore 2SK216 and I have to wait, as well as my small DIY project It seems that japanese transistors are rare in Switzerland. I have found one small seller that is even more expensive than Farnell (wanted like 15$ per transistor).
But, since I am doing my tube preamp for almost 1 year now (stupid decision to have remote controle) 'cos of lack of spare time I am getting use to it. Sometimes I think I should go to some shops by regular HiFi and quit the whole busines.
Again thanks a lot for help
Don't give up
But is the application so critical that other 200V 0.5A Mosfets won't do?
I've adopted a chronic attitude of substitution, especially when I see Japanese parts specified. There's nothing a Japanese semiconductor can do that can't be done by others.
Cheers
Adrian
But is the application so critical that other 200V 0.5A Mosfets won't do?
I've adopted a chronic attitude of substitution, especially when I see Japanese parts specified. There's nothing a Japanese semiconductor can do that can't be done by others.
Cheers
Adrian
Yes I know, but the problem is that I have already done the PCB and most of Japanese transistors have different pinout.
Latest news is that I have to wait 112 days for the next order and farnell will not do special order if there is a small number of pieces. I have to look elsewere...
Latest news is that I have to wait 112 days for the next order and farnell will not do special order if there is a small number of pieces. I have to look elsewere...
you can get them form electronique-diffusion
http://www.electronique-diffusion.fr
I don't know if they ship to switzerland but they have a lot of japanese parts and they are cheap.
http://www.electronique-diffusion.fr
I don't know if they ship to switzerland but they have a lot of japanese parts and they are cheap.
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