Hi Syklab,
These are not easy to find. I can't really recommend any place to get them; I received mine from a good friend in Toledo OH who had them in his inventory. I would suggest any Toshiba dealer in HK would be worth a phone call; failing that, look around the US at places like BDent and Toshiba dealers.
They are definitely available, but you do have to work at it....
Cheers,
Hugh
These are not easy to find. I can't really recommend any place to get them; I received mine from a good friend in Toledo OH who had them in his inventory. I would suggest any Toshiba dealer in HK would be worth a phone call; failing that, look around the US at places like BDent and Toshiba dealers.
They are definitely available, but you do have to work at it....
Cheers,
Hugh
There are some other places selling those toshiba mosfets worth take a look:
Amplab sells 3 pairs for $45
2SK1058 2SJ162 Audio Power Mosfets - Buy Online @ AmpsLab
cricklewoodelectronics have them for £8.00/pair
Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras
Amplab sells 3 pairs for $45
2SK1058 2SJ162 Audio Power Mosfets - Buy Online @ AmpsLab
cricklewoodelectronics have them for £8.00/pair
Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras
Those are not Toshiba mosFETs.
No wonder you can't find them.
They were originally Hitachi Lateral mosFETs.
They are now made by a few companies (with different designations) and according to the datasheets all perform almost identically.
Buy Lateral mosFETs, NOT TOSHIBA.
BUT !!
being FETs they suffer the typical wide spread of parameters that are found in FETs and usually not found in BJTs.
Don't expect close matches of parameters from a small batch.
Fortunately FetZilla only uses one pair per channel and no matching is required, nor necessary.
No wonder you can't find them.
They were originally Hitachi Lateral mosFETs.
They are now made by a few companies (with different designations) and according to the datasheets all perform almost identically.
Buy Lateral mosFETs, NOT TOSHIBA.
BUT !!
being FETs they suffer the typical wide spread of parameters that are found in FETs and usually not found in BJTs.
Don't expect close matches of parameters from a small batch.
Fortunately FetZilla only uses one pair per channel and no matching is required, nor necessary.
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Are the 2SK1058 2SJ162 drop-in replacement for ECX10N20 ECX10P20 ? I saw from an old post that 1058/162 are replacement for ECX10N16/10P16. The 2SK2220/2221 and 2SJ351/352 are for ECX10N20/10P20, is this correct ?
http://www.diyaudio.com/forums/solid-state/1449-mosfet-replacement.html
http://www.diyaudio.com/forums/solid-state/1449-mosfet-replacement.html
SEMELAB are the manufacturers of the Profusion EXICON branded and their own ALFET branded identical range of Lateral Mosfets.
ALFETS are marketed by MAGNATEC and CLASS D in the UK and Europe. FARNELL/NEWARK/ELEMENT14 distribute elsewhere, but I'm not sure that applies in all countries they service.
The problems we have with availability seem to be about distribution rights. so sidestep the nonsense and buy either brand as it comes.
Profusion's website has shown a blank lately for EXICON product, since there is no mention there and suddenly FARNELL is on the scene and the ALFET range now includes TO3 packages. Something is amiss there.
Some US guys have had better luck Gcogling SEMELAB for agencies or searching that Mosfet brand on ELEMENT 14 SITES
However, we are assured EXICON = ALFET. Part numbers are obviously different:
ECX10N20 = ALF08N20
ECX10P20 = ALF08P20
Equally suitable but cheaper 160V parts
ECX10N16 = ALF08N20
ECX10P16 = ALF08P16
Note:
1) Required TO3-P pack ALFETS need a V suffix.
2) TO3 can types are not the same as TO3-P, TO264, having a body diode to case connection so as to be substitutes for original HITACHI parts
3) The number 08 denotes 8 amp continuous current rating and 10 refers to maximum current rating. They are just different ratings of the same part.
I trust this is helpful for you guys frustrated with an antiquated supply chain, as I was. Please post if you find it different in your area. It may save someone a lot of grief.
ALFETS are marketed by MAGNATEC and CLASS D in the UK and Europe. FARNELL/NEWARK/ELEMENT14 distribute elsewhere, but I'm not sure that applies in all countries they service.
The problems we have with availability seem to be about distribution rights. so sidestep the nonsense and buy either brand as it comes.
Profusion's website has shown a blank lately for EXICON product, since there is no mention there and suddenly FARNELL is on the scene and the ALFET range now includes TO3 packages. Something is amiss there.
Some US guys have had better luck Gcogling SEMELAB for agencies or searching that Mosfet brand on ELEMENT 14 SITES
However, we are assured EXICON = ALFET. Part numbers are obviously different:
ECX10N20 = ALF08N20
ECX10P20 = ALF08P20
Equally suitable but cheaper 160V parts
ECX10N16 = ALF08N20
ECX10P16 = ALF08P16
Note:
1) Required TO3-P pack ALFETS need a V suffix.
2) TO3 can types are not the same as TO3-P, TO264, having a body diode to case connection so as to be substitutes for original HITACHI parts
3) The number 08 denotes 8 amp continuous current rating and 10 refers to maximum current rating. They are just different ratings of the same part.
I trust this is helpful for you guys frustrated with an antiquated supply chain, as I was. Please post if you find it different in your area. It may save someone a lot of grief.
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Yeah, their prices....You should try them here!
)OOPs! - error in above post - 1st line of 160V parts should be ECX10N16 = ALF08N16
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Alfia (Syklab),
Any lateral mosfet with transconductance 0.4S to 2S will work in this circuit; you need only have a voltage rating over 100V and a current rating over about 8A.
They are all pretty much useable here, Toshiba, Exicon, Semelab, and Renesas. I have not noticed differences in sound quality between them, to be honest - all sound pretty much the same.
Thanks guys for helping out, this is really useful information,
Cheers,
Hugh
Any lateral mosfet with transconductance 0.4S to 2S will work in this circuit; you need only have a voltage rating over 100V and a current rating over about 8A.
They are all pretty much useable here, Toshiba, Exicon, Semelab, and Renesas. I have not noticed differences in sound quality between them, to be honest - all sound pretty much the same.
Thanks guys for helping out, this is really useful information,
Cheers,
Hugh
Hi Mike,
Which 20R + 470uF you are looking at with the 22,000uF parallel with the 470uF that give the improvement ? I want to try something like 10000uF.
Hi Syklab,
It is not critical. My suggestion is anything from 0.8mm to 1.2mm. 1.4mm is too thick, in my view. I would suggest if you can't find the wire, simply buy a crossover inductor or choke with appropriate wire and unwind some of the turns. You only need about 60cms for one inductor!
Cheers,
Hugh
It is not critical. My suggestion is anything from 0.8mm to 1.2mm. 1.4mm is too thick, in my view. I would suggest if you can't find the wire, simply buy a crossover inductor or choke with appropriate wire and unwind some of the turns. You only need about 60cms for one inductor!
Cheers,
Hugh
Thank you Do,
A very Merry Christmas to you and to your family. I'm about to drive 500 kms in 32C heat. As a Canadian, can you imagine a Christmas with these temperatures? This is normal in Australia, aren't we lucky?
I hope you, and all other FetZilla builders, enjoy your new amp. I think it is rather good, I really do..... I can say that since Swordfishy designed it, not me!
Cheers,
Hugh
A very Merry Christmas to you and to your family. I'm about to drive 500 kms in 32C heat. As a Canadian, can you imagine a Christmas with these temperatures? This is normal in Australia, aren't we lucky?
I hope you, and all other FetZilla builders, enjoy your new amp. I think it is rather good, I really do..... I can say that since Swordfishy designed it, not me!
Cheers,
Hugh
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