irfp240 max dissipation

hugobors · 28th May 2007, 07:11 PM

Hello,

I've obsverved that Nelson polarise the irfp240 at around 20W in all the Aleph series. Is it to stay at something like 1/6 of the max power that can handle this device or is it because the case (to247) support only this amount of power to work in long life operation?
I ask this question to know if we can run a device in the same package but rating at 400W at more than 20W.

Thanks
Hugues

Nelson Pass · 28th May 2007, 11:57 PM

The device is rated at 150 watts at a 25 deg C case temperature,
derate at 1.2 W per deg C.

I like to run them around 25 watts, and I have run them as
high as 50 watts without excessive failure rates, but this is
heat sink dependent.

hugobors · 29th May 2007, 10:27 AM

Thanks a lot

Hugues

28th May 2007, 07:11 PM	#1
hugobors diyAudio Member Join Date: Feb 2002 Location: Nantes	irfp240 max dissipation Hello, I've obsverved that Nelson polarise the irfp240 at around 20W in all the Aleph series. Is it to stay at something like 1/6 of the max power that can handle this device or is it because the case (to247) support only this amount of power to work in long life operation? I ask this question to know if we can run a device in the same package but rating at 400W at more than 20W. Thanks Hugues

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Plate dissipation	Rob11966	Tubes / Valves	12	7th August 2009 01:33 PM
27/37/56/76 plate dissipation	audiowize	Tubes / Valves	13	19th March 2009 03:42 AM
What is power dissipation?	geminni	Everything Else	7	14th January 2007 07:39 AM
power dissipation	darkfenriz	Parts	2	14th December 2004 03:08 PM
Heat dissipation	Magura	Pass Labs	26	15th November 2003 12:00 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th May 2007, 11:57 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	The device is rated at 150 watts at a 25 deg C case temperature, derate at 1.2 W per deg C. I like to run them around 25 watts, and I have run them as high as 50 watts without excessive failure rates, but this is heat sink dependent.

29th May 2007, 10:27 AM	#3
hugobors diyAudio Member Join Date: Feb 2002 Location: Nantes	Thanks a lot Hugues

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)