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Old 2nd March 2013, 10:35 PM   #11
Hikari1 is offline Hikari1  United States
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Probably K1530-Y/J201-Y. But if they are not significantly better than the IRF's I dont know if its worth the hassle.
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Old 3rd March 2013, 12:04 AM   #12
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Originally Posted by Hikari1 View Post
... Don't know if I am ready to point to point a power supply yet though.
One more shameless plug: ApexJr has these Euro terminal blocks which if used strategically can be very flexible while safely handling large currents (as they're virtually touch-proof when the wires are stripped to the proper length).
And also 5mH 19AWG inductors for CLC...

Last edited by Andersonix; 3rd March 2013 at 12:08 AM. Reason: 19AWG
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Old 3rd March 2013, 03:01 AM   #13
dazed2 is offline dazed2  Canada
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I have 6 x 47,000uF caps in my F5 and I only use a CL-60, no soft start. Its been working like that for about a year and a half. Gets switched on almost daily, no problems.

You're ok.

As far as transistors I've tried the Fairchilds and the Toshibas. I like the Toshiba more, more "organic" and sweeter sound.
Farichilds are more sterile to me.

Last edited by dazed2; 3rd March 2013 at 03:16 AM.
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Old 3rd March 2013, 03:41 AM   #14
PKI is offline PKI  United States
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Just for the record, I have 0.4F and CL-60 works perfect.
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Old 3rd March 2013, 05:13 AM   #15
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I have 10 x 22,000uF caps in my F5, CL-60 no soft start. No worries. I've used both fairchilds and toshibas but in different amps so hard for me to tell if there's a difference. Nothing to lose any sleep over in my opinion.
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Old 3rd March 2013, 10:21 AM   #16
AndrewT is online now AndrewT  Scotland
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.................the Toshibas scare me with the different pin out............
all vertical mosFETs have the drain pin in the middle.
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Old 3rd March 2013, 12:17 PM   #17
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all vertical mosFETs have the drain pin in the middle.

Yes???


Rev.2.00 Sep 07, 2005 page 1 of 5
2SK1056, 2SK1057, 2SK1058
Silicon N Channel MOS FET
Outline
RENESAS Package code: PRSS0004ZE-A
(Package name: TO-3P)

1. Gate
2. Source (Flange)
3. Drain
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Old 3rd March 2013, 12:30 PM   #18
AndrewT is online now AndrewT  Scotland
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all Lateral mosFETs have the source as middle pin.
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Old 4th March 2013, 05:35 AM   #19
Hikari1 is offline Hikari1  United States
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Thanks for the info guys. Looks like 22Kuf x8 wont be an issue w/just the CL-60 and no soft start board.

So, I thought the 2SK1530/2SJ201 had a different pinout than the IRF/Fairchild mosfets. If they are the same pinout will they drop into a standard F5 build and bias up with no resistor changes/other changes?

Looks like I can get the Toshibas from Spencer at FET audio and analog metric has them as well. Cost more than the IRF's but could be worth it. Last thing I want to do is build the amp with IRF's and then always wonder if the Toshibas are better. Usually that ends up with me ripping the amp apart about 6 months later to "upgrade".
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Old 4th March 2013, 06:26 AM   #20
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Originally Posted by Hikari1 View Post

So, I thought the 2SK1530/2SJ201 had a different pinout than the IRF/Fairchild mosfets. If they are the same pinout will they drop into a standard F5 build and bias up with no resistor changes/other changes?

Same pinout 2SK1530 pdf, 2SK1530 description, 2SK1530 datasheets, 2SK1530 view ::: ALLDATASHEET :::
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