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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 2nd January 2015, 03:37 PM   #51
JP is offline JP  United States
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Your link doesn't work and the spec sheet is for a CCS, not MOSFET.
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Old 3rd January 2015, 01:08 PM   #52
canersahin is offline canersahin  Turkey
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Opps sorry, was loooking for something else then. That's what i got

FDPF5N50NZ Fairchild Semiconductor | FDPF5N50NZ-ND | DigiKey
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Old 8th January 2015, 05:36 PM   #53
Warmsound is offline Warmsound  United States
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There are a lot of 2SK3563's listed on eBay. Question is, are any of them authentic and how do you tell.
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Old 9th January 2015, 12:12 AM   #54
JP is offline JP  United States
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3 or 4 people have bought them in the past, myself included. All fake. Plenty of current parts available that'll work fine.
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Old 9th January 2015, 01:18 AM   #55
evanc is offline evanc  United States
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Mosfets for Tubelab SE?
2SK3565(Q,M) Toshiba Semiconductor and Storage | 2SK3565QM-ND | DigiKey
both suppliers have very few of these in stock....Buy while you can.
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Old 10th January 2018, 12:04 PM   #56
michaeljessen is offline michaeljessen  Denmark
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I am looking for a substitute for the Mosfet 2SK3563Q-ND Can I use FDPF5N50NZ-ND in sted ? Is it a usefulness substitute?

I had a chat with an Engineer from Digikey. He Came up with two sub. TK6A60DSTA4QM-ND and FDPF5N50NZ-ND There are apposing zener diodes across the gate and source just like the 2SK3563Q-ND. Witch of these are the best substitute for 2SK3563Q-ND ?

I do not have the Knowledge to see it on the data sheets. Can somebody help?

I get a link to chip1stop.com they have 400 2SK3563Q in stock. I buy a pair because I dit not know enough about a substitute for 2SK3563Q-ND This will possible be sold out quick I think.

2SK3563(Q) Toshiba | Transistor | MOSFET - chip1stop.com
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Old 10th January 2018, 09:05 PM   #57
Tubelab_com is offline Tubelab_com  United States
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See if you can get any NDF04N60ZG. I know that Mouser still has about 1000. I just ordered some and they are on their way. I have been using them in my amps with good results, but they are now on the endangered species list as well. It seem that HV mosfets have a product lifetime measured in months. If they don't find their way into a high volume product, they go away.

There have been too many builders, especially in Europe who have been burned by counterfeit Mosfets and CCS chips from Ebay.

Mouser number for the On Semi mosfets:


Digikey has zero left
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
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Old 10th January 2018, 09:08 PM   #58
mctavish is offline mctavish  Austria
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I still have about 10 of the toshiba's from back when.

I am sure I could spare a pair.

Send me a PM if you are interested...
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