2SK412 and 2SJ113 MOSFETs

Markus2006 · 11th August 2008, 03:42 PM

Can someone tell me whether these two MOSFETs are of lateral or vertical type?

Mark

jacco vermeulen · 11th August 2008, 04:08 PM

Vertical.
Low capacitance parts but positive tempco doesn't happen till something like 3.5 to 4 Amps of drain current.
They belong to the DI series of switching vertical mosfets.

Markus2006 · 11th August 2008, 08:34 PM

Thanks,

I couldn't find this information.

Markus2006 · 20th August 2008, 01:40 PM

I'm still looking for lateral MOSFETs to be used in Marshall amp. Can someone verify whether 2SJ162 and 2SK1058 are lateral? It seems that they are available and not that expensive as ECX10P20 and ECX10N20.

Mark

jacco vermeulen · 20th August 2008, 02:57 PM

Very lateral, apart from the package they are identical to the original lateral MOSFETs in TO3 case that Hitachi used to make.

2SJ160=2SJ48
2SJ161=2SJ49
2SJ162=2SJ50
2SK1056=2SK133
2SK1057=2SK134
2SK1058=2SK135

Downside of the plastic lateral MOSFETs is that their thermal properties are somewhat less compared to TO3 specimens.
Which is mainly a burden for Class A power amps because of the much higher heat transfer.
MOSFETs do not suffer from secondary breakdown and lateral MOSFETs in particular are selfprotecting, for Class AB power amps it makes hardly a difference to use metal TO3s or plastic TO247 case devices.

The advantage of the plastic 2SJ160 to 2SK1058 is that they're both easier to mount than TO3s and cheaper, a pair of 2SJ162/2SK1058 now cost less than what had to be paid for a pair of 2SJ50/2SK135 20 years ago.
Amusing bit is that the plastic 2SJ62/2SK1058 have now been produced for close to the same period as Hitachi manufactured the TO3 versions.

The advantage of the other Exicon lateral MOSFETs you mention is their much higher voltage rating, 200V.
Basically, they'd be good for the output stage of a 1000W/8 power amp, hardly interesting for normal folks.

Markus2006 · 20th August 2008, 03:13 PM

Thanks. I think about building this: http://www.drtube.com/schematics/marshall/3520pwr.gif Marshall amp. It's 200W bass amp and I don't think it's class A.

Mark

jacco vermeulen · 20th August 2008, 03:19 PM

You want to build the amp for home use or to amplify musical instruments ?

Markus2006 · 20th August 2008, 04:37 PM

To amplify bass guitar. Is it a good idea? I heard the amp and it sounded quite good.

Mark

11th August 2008, 03:42 PM	#1
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	2SK412 and 2SJ113 MOSFETs Can someone tell me whether these two MOSFETs are of lateral or vertical type? Mark

11th August 2008, 04:08 PM	#2
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Vertical. Low capacitance parts but positive tempco doesn't happen till something like 3.5 to 4 Amps of drain current. They belong to the DI series of switching vertical mosfets. __________________ Looks like Sponge Bob has killed another thread.

20th August 2008, 01:40 PM	#4
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	2SJ162/2SK1058 I'm still looking for lateral MOSFETs to be used in Marshall amp. Can someone verify whether 2SJ162 and 2SK1058 are lateral? It seems that they are available and not that expensive as ECX10P20 and ECX10N20. Mark

20th August 2008, 02:57 PM	#5
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Very lateral, apart from the package they are identical to the original lateral MOSFETs in TO3 case that Hitachi used to make. 2SJ160=2SJ48 2SJ161=2SJ49 2SJ162=2SJ50 2SK1056=2SK133 2SK1057=2SK134 2SK1058=2SK135 Downside of the plastic lateral MOSFETs is that their thermal properties are somewhat less compared to TO3 specimens. Which is mainly a burden for Class A power amps because of the much higher heat transfer. MOSFETs do not suffer from secondary breakdown and lateral MOSFETs in particular are selfprotecting, for Class AB power amps it makes hardly a difference to use metal TO3s or plastic TO247 case devices. The advantage of the plastic 2SJ160 to 2SK1058 is that they're both easier to mount than TO3s and cheaper, a pair of 2SJ162/2SK1058 now cost less than what had to be paid for a pair of 2SJ50/2SK135 20 years ago. Amusing bit is that the plastic 2SJ62/2SK1058 have now been produced for close to the same period as Hitachi manufactured the TO3 versions. The advantage of the other Exicon lateral MOSFETs you mention is their much higher voltage rating, 200V. Basically, they'd be good for the output stage of a 1000W/8 power amp, hardly interesting for normal folks. __________________ Looks like Sponge Bob has killed another thread.

20th August 2008, 03:19 PM	#7
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	You want to build the amp for home use or to amplify musical instruments ? __________________ Looks like Sponge Bob has killed another thread.


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11th August 2008, 08:34 PM	#3
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	Thanks, I couldn't find this information.

20th August 2008, 03:13 PM	#6
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	Thanks. I think about building this: http://www.drtube.com/schematics/marshall/3520pwr.gif Marshall amp. It's 200W bass amp and I don't think it's class A. Mark

20th August 2008, 04:37 PM	#8
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	To amplify bass guitar. Is it a good idea? I heard the amp and it sounded quite good. Mark

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