Awwww yeah......

MatthewS · 10th May 2008, 01:28 AM

http://www.datasheetcatalog.org/data...rf/irf1405.pdf

nuff said!

- Matt

luka · 10th May 2008, 05:36 AM

Hi

Well I don't like that big Qg, but diode inside is good...
If you are able to rdive it well, this fet should be good

ifrythings · 10th May 2008, 05:39 AM

You do realise that the limit of the TO220 pakage is 75A right? The die maybe able to handle 169A but not in a TO220 package.

The same thing goes for the IRF3205 that I like but same issuse 75A limit.

Perry Babin · 10th May 2008, 10:18 AM

The 1405 can work well if the drive circuit is designed for it. It's definitely not a drop-in replacement in most amps.

Like the 3205 (my FET of choice), it's rated for more current than the continuous current flow that the package can handle. Virtually all electrical components are derated as the temperature increases. If you consider the part to be a 75 amp device (due to the case), it can deliver 75 amps safely at much higher temperatures. The 3205 can be used up to 75 amps up to ~110C. The 1405 can be used to 75 amps up to ~140C. You wouldn't design a power supply that would push them that hard normally but it means they're more likely to survive at high temps when the amp is stressed.

10th May 2008, 01:28 AM	#1
MatthewS diyAudio Member Join Date: Feb 2008	Awwww yeah...... http://www.datasheetcatalog.org/data...rf/irf1405.pdf nuff said! - Matt

10th May 2008, 05:36 AM	#2
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi Well I don't like that big Qg, but diode inside is good... If you are able to rdive it well, this fet should be good __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

10th May 2008, 10:18 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The 1405 can work well if the drive circuit is designed for it. It's definitely not a drop-in replacement in most amps. Like the 3205 (my FET of choice), it's rated for more current than the continuous current flow that the package can handle. Virtually all electrical components are derated as the temperature increases. If you consider the part to be a 75 amp device (due to the case), it can deliver 75 amps safely at much higher temperatures. The 3205 can be used up to 75 amps up to ~110C. The 1405 can be used to 75 amps up to ~140C. You wouldn't design a power supply that would push them that hard normally but it means they're more likely to survive at high temps when the amp is stressed. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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10th May 2008, 05:39 AM	#3
ifrythings diyAudio Member Join Date: Oct 2005	You do realise that the limit of the TO220 pakage is 75A right? The die maybe able to handle 169A but not in a TO220 package. The same thing goes for the IRF3205 that I like but same issuse 75A limit.

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