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#1
22nd September 2020, 10:31 AM
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Silicon Carbide Schottky diodes
Just saw this in an advert from Farnell, if anyone is interested.
They assure us "Silicon Carbide (SiC) Schottky Diodes use a completely new technology that provides superior switching performance and higher reliability compared to Silicon." I have not investigated why the new technology is superior. https://uk.farnell.com/on-semiconduc...icon%20carbide Part number https://uk.farnell.com/on-semiconduc...icon%20carbide Edit - For those interested I found this. https://www.onsemi.com/video/overvie...c-capabilities Last edited by A Stuart; 22nd September 2020 at 10:49 AM. 
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#2
23rd September 2020, 03:19 PM
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Re: Silicon Carbide Schottky diodes
Also thought Pre65's attention would prick up on noticing that they also come in 1.7kV versions.
 They don't seem to offer a hair-standing-on-end emoji to adequately cover this.
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#3
23rd September 2020, 03:57 PM
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Re: Silicon Carbide Schottky diodes
I saw the carbide bit and wondered if you add water do you get acetylene gas and power your old 1900s car headlight?
I guess its basically silicon alloyed (is that the right term) with carbon or a compound of silicon and carbon. Worth a look, I would say aside from switching speed advantages its worth a look to see what its noise characteristics are. A.
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#4
23rd September 2020, 06:36 PM
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Re: Silicon Carbide Schottky diodes
Either to make acetylene or sharpen your chisels on it, I thought.
 Having looked further, I must apologise and declare this whole thread a bit of a waste of time. They have been around for 10 years! See http://www.world-designs.co.uk/forum...light=schottky - and worse than that, I already have Silicon Carbide ones. They are still in their packet 8 years later. At least I have learnt something new: cats whiskers from 80(?) years ago were essentially schottky diodes. Just to prove I am not going round the bend, this is a screenshot of what Farnell just sent
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#5
23rd September 2020, 08:17 PM
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Re: Silicon Carbide Schottky diodes
Reading about Shottky diodes some time back, I purchased 4 for one of my PSU's HT rectifier, I think they were 10 amp rated, I later found out that is better to use diodes of the lowest current rating to avoid feed back into the transformer. Most Shottky's are rated too high for our HT needs, but fast recovery 500mA are favoured. Bob
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