Magnatec's new line - ALFET

ACTIVA · 5th November 2009, 09:21 AM

Magnatec. ALFET Lateral MOSFETs

The old BUZ 900 / 901 Lateral MOSFET now rebrand as ALFET with more options.

Regards
PS

Lumba Ogir · 5th November 2009, 09:54 AM

Not very informative data sheets anyway...

Xoc1 · 6th November 2009, 10:38 PM

It seems amusing that the photos of the Semelab Mosfet packages on the Magnatec websitehave the part number used by Class D
Class-D Design Ltd.
According to Semelab these parts are 8 amps per die.
Class D rate their mosfets at 12A per die!

As far as I know, these parts are not exactly the same as the Magnatec BUZ / Exicon Mosfets. They have made some minor changes to the die construction.
I would be very interested to know if anyone has managed to construct a high power amplifier, Say 500w RMS 4 Ohm +, using multiple semelab lateral mosfet output stages, that was reliable, and did not suffer from component failure.

tinitus · 7th November 2009, 12:43 AM

I must say that my first thought seeing site and picture of devices was "cheap looks, and what a strange name"

Oh btw, I just recently did take a look at some BUZ devices, and I thought that 30 EUR was way too expencive

Magz · 7th November 2009, 06:20 AM

Interesting choice for a name. From Wikipedia:

An alfet (Old English: ālfæt, "fire vat") was an ancient cauldron filled with boiling water, into which an accused person was to plunge his arm up to his elbow. If hurt, he was held guilty; if not, acquitted.

Lumba Ogir · 8th November 2009, 12:14 AM

Hi,
but for that price would it be too much to ask for data sheet and some documentation on the cauldron technology?

AKSA · 8th November 2009, 12:18 AM

Quote:

but for that price would it be too much to ask for data sheet and some documentation on the cauldron technology?

You will find the subjective effects far outweigh any objective, measured benefits......

Hugh

Lumba Ogir · 8th November 2009, 12:39 AM

Hugh,
some information could tell something about the direction of development. As a matter of fact, I`m curious.

tinitus · 8th November 2009, 03:31 AM

Are these the special Magnatec AnthonyHolton advertised intensively about while working with Class-D Design
And suddenly had to do without, after the split

Xoc1 · 8th November 2009, 08:20 PM

Quote:

Originally Posted by tinitus

Are these the special Magnatec AnthonyHolton advertised intensively about while working with Class-D Design
And suddenly had to do without, after the split

I think these are the self same mosfets.
As for Mr Holtons opinion on them, all I can say is Ask him!

If you click on the component name hyperlink you get a reasonable spec sheet
Example
http://www.semelab.com/pdf/magnatec/...0ALF08N20V.pdf

5th November 2009, 09:21 AM	#1
ACTIVA diyAudio Member Join Date: May 2006 Location: Singapore	Magnatec's new line - ALFET Magnatec. ALFET Lateral MOSFETs The old BUZ 900 / 901 Lateral MOSFET now rebrand as ALFET with more options. Regards PS

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5th November 2009, 09:54 AM	#2
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Not very informative data sheets anyway...

6th November 2009, 10:38 PM	#3
Xoc1 diyAudio Member Join Date: Nov 2008 Location: Devon UK	It seems amusing that the photos of the Semelab Mosfet packages on the Magnatec websitehave the part number used by Class D Class-D Design Ltd. According to Semelab these parts are 8 amps per die. Class D rate their mosfets at 12A per die! As far as I know, these parts are not exactly the same as the Magnatec BUZ / Exicon Mosfets. They have made some minor changes to the die construction. I would be very interested to know if anyone has managed to construct a high power amplifier, Say 500w RMS 4 Ohm +, using multiple semelab lateral mosfet output stages, that was reliable, and did not suffer from component failure.

7th November 2009, 12:43 AM	#4
tinitus diyAudio Moderator Join Date: Nov 2005	I must say that my first thought seeing site and picture of devices was "cheap looks, and what a strange name" Oh btw, I just recently did take a look at some BUZ devices, and I thought that 30 EUR was way too expencive

7th November 2009, 06:20 AM	#5
Magz diyAudio Member Join Date: Oct 2009 Location: New Jersey, USA	Interesting choice for a name. From Wikipedia: An alfet (Old English: ālfæt, "fire vat") was an ancient cauldron filled with boiling water, into which an accused person was to plunge his arm up to his elbow. If hurt, he was held guilty; if not, acquitted.

8th November 2009, 12:14 AM	#6
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Hi, but for that price would it be too much to ask for data sheet and some documentation on the cauldron technology?

8th November 2009, 12:39 AM	#8
Lumba Ogir Banned Join Date: Apr 2005 Location: Stockholm	Hugh, some information could tell something about the direction of development. As a matter of fact, I`m curious.

8th November 2009, 03:31 AM	#9
tinitus diyAudio Moderator Join Date: Nov 2005	Are these the special Magnatec AnthonyHolton advertised intensively about while working with Class-D Design And suddenly had to do without, after the split

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