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ATLynxer

Which MOSFET for Atari Lynx I & II?

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Hi, the original mosfet for the Lynx I & II, Motorola, cod. MTD3055E and ALSO its replacement, ST, cod. STD12N06 are out of production

 

I found STD12NF06L mosfet. In production at the moment.

Does it fit for the purpose, in your opinion?

 

Here the datasheets:

 

MTD3055E: http://www.alldatasheet.com/datasheet-pdf/pdf/168557/MOTOROLA/MTD3055E.html

 

STD12N06: http://www.alldatasheet.com/datasheet-pdf/pdf/24013/STMICROELECTRONICS/STD12N06.html

 

STD12NF06L: http://www.alldatasheet.com/datasheet-pdf/pdf/24018/STMICROELECTRONICS/STD12NF06L.html

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Towers lists SMD15N05 as a replacement if that is still in production as my copy of Towers is date 1994!

The NTD3055L104G NTD3055L104T4G appear to be direct replacements and still in production. 

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I talked with some electronic experts here in Italy. We compared the datasheets (for the Lynx expressly) and they told me that STD12NF06L is better than the original mosfet....

i've ordered a couple and I will try it...

Edited by ATLynxer

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I confirm you it works great! :thumbsup:

Great =D  I've ordered some too.  Next we need to find a better replacement for the zenner!  I guess just uprating the current capability should do there.

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Best option is getting rid of the entire 9V to 5V section....

 

I wonder if there is some modern powerpacks that would fit in the Lynx cover?

 

USB power sockets are everywhere so you would just need a small cable to charge the powerpack.

 

Perhaps a powerpack with dual output would work (one for the Lynx, one for McWill screen). These powerpacks seem to deliver up to 2A per port.

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Can you send me a link to what you purchased? I need a new mosfet. Mine would not power on so I watched a YouTube video about bypassing it by running a wire from battery negative to headphone jack ground. Yes it did work and the Lynx powered on but I also had smoke coming out LOL. I opened it up to see the insulation on the wire had been burning off. I guess ide wire is not good for this application. At any rate I know what the problem is now.

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The age of the Lynx is killing the capacitors as well. So I would suggest to change the whole set. My White Lynx died recently and just changing the largest capacitor brought it back.

 

http://atariage.com/forums/topic/254446-lynx-power-circuit-upgraderepair-better-than-5v-mod/?p=3776590

 

I still have a set in case you want one.

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