Has anyone seen this?
I found this 2012 article from Compound Semiconductor kind of interesting.
SiC: survival of the fittest?
I found this 2012 article from Compound Semiconductor kind of interesting.
SiC: survival of the fittest?
It would be constructive for you to make available samples of your devices to members of this forum to experiment with. This way it can be determined whether or not your claims hold true for our applications. I strongly suggest you start with Nelson Pass.
Why is it that I like better losers?
Probably because of the similarity of mind.
Well, it seems to me, this is not the beginning of a friendship.
As I can see, in business not always the better will survive.
And people like this folks, if they come in flocks, will make me leave the audio hobby.
Your attitude is simply unwelcome here. Calling someone a loser? Is this bully grade-school talk? Calling someone a poor scientist? That's mean at best and libel at worst. This is not the IEEE, this is an social audio board for audio and music lovers.
Unless your product can make unicorns and fairies sing Metallicas "Unforgiven" to me, I don't plan on ever using it. It's off the radar due to poor customer service.
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Zen Mod, You are the one in need of some manners here. Where were you when Semisouthfan was bad-mouthing GeneSiC in posts #128 and #138?
GeneSiC's SiC transistors products have been available through mainstream semiconductor device distributors (Digikey, Mouser, element14/Newark, Arrow) since before Semisouth ever had made them sell openly. So, it has been PUT UP for a WHILE.. Are you looking, or just going by what others are saying?
GeneSiC's SiC transistors products have been available through mainstream semiconductor device distributors (Digikey, Mouser, element14/Newark, Arrow) since before Semisouth ever had made them sell openly. So, it has been PUT UP for a WHILE.. Are you looking, or just going by what others are saying?
I see no poor manors or derogatory name calling in those posts. The strongest words used were associated with marketing. That in itself is not generally considered bad but, the reality is, used car salesman that can't sell cars can be marketing execs. I suppose you'll go off on me for saying that.
The point is, a noob walking all over this group like a know it all, will get back what he brings and then some. Have you done what SS and Semisouthfan have done? Are you willing to explain what you say to help us understand what it is your pushing? Someone brought up samples, are you willing to help us get samples?
Lose the personal attacks like "loser" or things wont go well here
Thx
The point is, a noob walking all over this group like a know it all, will get back what he brings and then some. Have you done what SS and Semisouthfan have done? Are you willing to explain what you say to help us understand what it is your pushing? Someone brought up samples, are you willing to help us get samples?
Lose the personal attacks like "loser" or things wont go well here
Thx
Nelson, OK. Could you please let me know how I can reach you to talk about samples? Should I contact on info@passlabs.com?
In 75% of your posts to date you have bragged about your SJTs being superior to any other option available for audio. Indeed, they may have been commercially available for some time now. However, what you need to comprehend is that you are participating in a DO IT YOURSELF audio forum.
Many DIYers, such as myself, are really CHEAP. We aren't going to spend $20.00 for each part to experiment with an unproven component. We wait until someone much more experienced like NP shows us how great it is. Then we flock to Mouser or Digikey to buy tens, if not hundreds, of the parts. You are not going to improve your company's bottom line from what takes place here.
If you joined DIYaudio today to simply respond to a post you took issue with, that was the wrong motivation. Flames are a waste of everyone's time, including yours. On the other hand, if you are here to share with us the excitement of finding a new and wonderful option for producing beautiful music, great. Make some of those devices available either as samples or at cost so they can be tested for our application.
Edit: My dog demanded my attention, so it took 20 minutes to post this.
It's good to see you are willing to send some samples. Once again, welcome to the forum!
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WBS, Thanks for your constructive comments.
I hear you about making samples available, but am not able to understand EXACTLY how to make them available - ofcourse, we cannot make more than a handful available. I do not know Nelson Pass, but he seems to get the respect of everyone here, so I am happy to make them available to him.
I hear you about making samples available, but am not able to understand EXACTLY how to make them available - ofcourse, we cannot make more than a handful available. I do not know Nelson Pass, but he seems to get the respect of everyone here, so I am happy to make them available to him.
well , call me a looser , but I can't see any name-calling activities in these two posts :
Astute observation. This is a SiC Bipolar Junction Transistor (BJT). Ranbir Singh, the founder and chief cut up of GeneSiC has been trying to "disguise" this part as anything but a BJT for years. He seems to be trying to introduce maximum confusion. In the Mouser link to a similar part it is described as "MOSFET SiC Supr Jnctn Trans" where Supr Jnctn = "super junction" transistor.
I think Ranbir intended to associate his technology with the "super junction" class of silicon MOSFETs to deflect concern about the problems with bipolar transistors in SiC. But please don't be fooled, this part is NOT a MOSFET or a JFET. When I asked him about the name he didn't really have a good answer except "marketing." I watched Dan Kinzer, who is a well respected silicon power MOSFET expert that is now hawking SiC BJTs for Fairchild, joke Ranbir about "super junction" at a conference two years ago. The whole room broke into laughter. Moral of the story? Sometimes it's hard to come up with those clever brand names.
It's interesting that the data sheet for the GA20JT12-247, roughly comparable to the R100, is filled with TBD, but it includes an entry for DC Current Gain or "beta" (value also TBD but BF = 100 in the Spice model at the end of the data sheet). Nobody selling a MOSFET or JFET would EVER put beta in a data sheet. Beta is for BJTs, which Ranbir admitted this part is when Dan asked him in public. I haven't heard the super junction term used much since and I notice that the datasheet omits the phrase "super junction." But on p. 6 you can see "SJT" in the gate drive section.
Does that mean the GA20JT12-247 can't replace the fine SemiSouth JFET in Pass amplifiers? Maybe, maybe not. You can try it, but based on pricing on Mouser for other available parts, I speculate that the 70 mOhm part, when available, won't be cheaper than a SemiSouth JFET and I can still get you those.
That Ranbir, what a comedian!!
except prepared play-field for you or anyone else interested to discuss some technical and not so technical things about all things Semi, which can teach us , Greedy Boyz , something new .
being wakoo parts or not , Semisouth parts came to DIY crowd long before Mr. Mazzola came to Forum ;
what you can do , at least what's in our interest , is to shed some light on parts made by your company
if they're good , believe me - that's all of (and certainly strongest possible) credit you need in this place
www.passlabs.com
www.firstwatt.com
https://en.wikipedia.org/wiki/Nelson_Pass
reachable at >nelson@passlabs.com<
which is important , in two possible ways :
-you are interested in audio electronics
-your company is interested in (frankly , not so big ) audio electronic parts market
Great! I don't know the best way to contact him. However, at the bottom of the FirstWatt home page you'll find an email address. I don't want to post it here for spambots to find.
Thanks for making this more interesting!
I will simply have my purchasing person get them from Digikey, thanks.
which means you're going to use another pair of slippers , to get in that person boots
Attachments
Nelson, Thanks. Please ask them for GA10JT12-247 - they represent devices that feature our latest/greatest technology at a reasonable price. Unless you want to go for surface mount (eg. GA05JT12-263, GA10JT12-263 etc.); or the more expensive 1700 V devices (GA04JT17-247, GA16JT17-247 etc.), which also offer our latest technology.