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Old 13th April 2014, 09:25 PM   #1
Bigun is offline Bigun  Canada
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Default new SiC JFETs ?

March 14, 2014 - United Silicon Carbide Inc. releases Best In Class 1200V SiC JFET Transistor
United Silicon Carbide Inc. (USCi), releases its portfolio of 1200V Silicon Carbide JFET product in die form and TO247 packages. The breakthrough United Silicon Carbide xJ series of 1200V JFET's are the industry's lowest RDS(on) SiC transistor device. This market milestone for silicon carbide enables best in class converter and inverter system efficiency through incorporating the lowest figure of merit ( FOM) switch commercially available. The depletion mode xJ JFET series takes advantage of silicon carbide's significantly superior performance over silicon, offering the user the best wide bandgap switch at standard 175C Tj max. When appropriately packaged, the xJ series is capable of operating at temperatures of 250C and beyond.

Designed to achieve best in class system efficiency, improved thermal characteristics and industry leading FOM the xJ series enable the most efficient switching solutions for both power discrete and power module applications.

United Silicon Carbide - USCi News



and also: CoolSiC? 1200V SiC JFET & Direct Drive Technology - Infineon Technologies
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Old 13th April 2014, 10:35 PM   #2
mos57 is offline mos57  Italy
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Although designed for switching applications, they seem closer to SIT that other SIC devices recently introduced.

The output characteristics shown in the document are for high currents and it is noted clearly that they are pentode-like curves, but may be that for much lower current levels (around 2-3 A) they may have a shape similar to that of the triodes.

Hope that should be checked as soon as possible.
The most promising for our purposes seems to be the smallest.

Let's see if we can organize a small group of purchase.
Attached Files
File Type: pdf UJN1205K.pdf (564.3 KB, 185 views)
File Type: pdf UJN1208K.pdf (577.4 KB, 120 views)

Last edited by mos57; 13th April 2014 at 10:40 PM.
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Old 13th April 2014, 10:39 PM   #3
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I got an infineon sample box of these SIC-FETs, sometime I will play with them
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Old 14th April 2014, 02:38 PM   #4
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Same here, I have samples and will fire some up this month.

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Old 14th April 2014, 10:38 PM   #5
mos57 is offline mos57  Italy
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Please note that the smaller device is the UJN1208K, but with

21 amperes of continuous drain current with only 500 pF of input cap.

Also better transfer characteristics and more promising output curves vs. Infineon, Genesic and others.

Francesco
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Old 15th April 2014, 12:13 AM   #6
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I was mostly attracted to its price...

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Old 15th April 2014, 06:12 AM   #7
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Quote:
Originally Posted by mos57 View Post
Although designed for switching applications, they seem closer to SIT that other SIC devices recently introduced.

The output characteristics shown in the document are for high currents and it is noted clearly that they are pentode-like curves, but may be that for much lower current levels (around 2-3 A) they may have a shape similar to that of the triodes.

Hope that should be checked as soon as possible.
The most promising for our purposes seems to be the smallest.

Let's see if we can organize a small group of purchase.
Buon giorno.
Please take in mind my name for future GB or sucedaneous
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Old 15th April 2014, 11:56 AM   #8
Bigun is offline Bigun  Canada
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I'm interested in the lower current version - I'd like to know a bit more about them at higher voltages and at lower currents since the data sheets don't say much.
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Old 15th April 2014, 12:09 PM   #9
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Count me IN too for group buy. I like to experiment!
Looks very promising! A new paradigm shift to evolve...?
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Old 15th April 2014, 12:44 PM   #10
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What is price of this SIC devices in $ or ?

greetings
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Last edited by soundhappy; 15th April 2014 at 12:51 PM.
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