building firstwatt f1 - questions on parts - Page 3

Netlist · 13th June 2006, 04:33 PM

55-60° is a bit high and a small silent fans will work wonders.
Water cooling works fine too, some run them with alcohol cooled devices during the winter.

/Hugo

choariwap · 16th June 2006, 10:45 AM

bad luck, the supplier ran out of IRFP240s.. they are suggesting IRFP240PBF which is the lead free version.

will this be ok as an alternative? i've checked the net and their spec sheets are identical (the exact same file)

Thanks!

gl · 16th June 2006, 03:26 PM

Thay are the same. The tinning on the pins will be different but the internal die (the important part) will be exactly the same.

Graeme

Adams_Leo · 20th June 2006, 06:44 AM

Quote:

Originally posted by jh6you

Compromise bias current . . . :rdevil:
The highly efficient corns still welcome lower current !!!

Where is this :rdevil: ????????????
Am I still drunk ~~~ ???

Good luck!!!

Hi Jh,I want to build the F1 power amp and I am in China.I tried to send a mail to you,but you do not wish to receive emails.Could you send a message to me.I will try to contact with you.Do you mind....?

Regards,
Leo

jh6you · 20th June 2006, 12:55 PM

Hi Leo,

Click here to email me

Regards

JH

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13th June 2006, 04:33 PM	#21
Netlist diyAudio Moderator Emeritus Join Date: Jan 2003	55-60° is a bit high and a small silent fans will work wonders. Water cooling works fine too, some run them with alcohol cooled devices during the winter. /Hugo

16th June 2006, 10:45 AM	#22
choariwap diyAudio Member Join Date: Jun 2006	bad luck, the supplier ran out of IRFP240s.. they are suggesting IRFP240PBF which is the lead free version. will this be ok as an alternative? i've checked the net and their spec sheets are identical (the exact same file) Thanks!

16th June 2006, 03:26 PM	#23
gl diyAudio Member Join Date: Dec 2003 Location: Sierra Foothills - California	Thay are the same. The tinning on the pins will be different but the internal die (the important part) will be exactly the same. Graeme

20th June 2006, 12:55 PM	#25
jh6you Account Disabled Join Date: Aug 2002 Location: Near to the Pacific Ocean	Hi Leo, Click here to email me Regards JH