Interest for genuine Semisouth SJEP120R100 curve tracer matched pairs & quads

[EUVL]

This is not the right place to discuss alternatives to Semisouth's.
There are threads at the Pass forum dedicated for that.

But I have drawn my own conclusions long ago.
Obvious choice, based purely on facts.


Cheers,
Patrick

.

 

[joshvi]

Transistors arrived.Thank you .

 

[gary s]

OK, no problem with your comment at all Patrick, have mentioned them in another thread now.

 

[Lazybutt]

I have received my Quad today.

Couldn't help getting out the curve tracer
Looks pretty darn good to me as a quad (and one almost absolutely perfect Pair)

Thanks again!

PS: this is arbitrary Vds = 5V

 

[soundslave]

Just got my quad today, now what to do with them? Thanks Patrick

 

[GnuB]

Received my Package today . Thank you very much Mr Patrick and his team .

Ditto!
Thank you!

 

[EUVL]

> Couldn't help getting out the curve tracer

You will not get the true story until you have 20V Vds and controlled 55°C +/-0.1°C case temperature.
And your "curve tracer" should have current sensing resistors on heatsinks with 0.01% accuracy, 30ppm/K tempco and Kevin connections.


Patrick

 

[Quantensprung]

Hello Patrick and XEN



My 2 Quads arrived already some days ago. Thank you very much for all your work. You are the best.



Kind Regards



Phil

 

[EUVL]

Patrick

 

[sampsonite]

Thank you. The quads arrived safely. I appreciate your time and effort doing this.

 

[Lazybutt]

> Couldn't help getting out the curve tracer

You will not get the true story until you have 20V Vds and controlled 55°C +/-0.1°C case temperature.
And your "curve tracer" should have current sensing resistors on heatsinks with 0.01% accuracy, 30ppm/K tempco and Kevin connections.


Patrick

Curve traced @20V Vds
Looks even better indeed at the parameters they've been matched for

Re. temp control, I certainly can't do better than 1°C (with a chinese IR temp reader lol) but I'm the "engineer" type of guy, so it's good enough for me since I can't garantee that type of temperature control in my application anyway.

At this stage this was more for self satisfaction than anything else.

 

[EUVL]

That looks a bit better.
Bear in mind that the matching criteria is around the operating point, and not necessary down to zero current.


Patrick

 

[yoaudio]

Quad arrived today.
Thanks Patrick and team!

 

[EUVL]

We have many people asking for Semisouths by PM.

This GB is closed and completed.
We still have devices left as some have opted out or simply did not pay.
So we shall offer those some time early next year.
Please keep an eye here at the GB forum, and do not send PMs.
We shall not reply.

If you cannot wait, you can still get some from ebay.


Thanks for your interest,
Patrick

 

[cochleus]

My package arrived at the post office on the 18th. Thanks Patrick and associates.

Al

 

[flancfuster]

Package received. Thank you for effort of sourcing and matching.

 

[EUVL]

Samoloko,

Please release your Paypal payment like all others before we ship to you.
See for example post #485, 486, etc.


Patrick

 

[samoloko]

Patrick,
I have confirmed receipt

regards

 

[EUVL]

Thanks.


Patrick

 

[OtisCampbell]

Happy to read there will be another chance at matched pairs... If anyone figures they might not make use of theirs hit me up!