mosfet question

mike49504 · 12th November 2009, 05:36 AM

Im working on an amp the power supply fets are blown. The fets that were in there were fqp65n06 60v 79a 8.4 m Ohm i have alot of ndp7060's laying around wondering if they might work 60v 81a 12mohm wondering if theese might work for me any help would greatly be appericated

Perry Babin · 12th November 2009, 06:16 AM

In a power supply they should work unless the drive circuit is weak. The 7060s are going to be a bit harder to drive so if the gate resistors are more than ~68 ohms, I'd replace them (I'd recommend 47 ohm gate resistors).

mike49504 · 12th November 2009, 11:25 AM

ok thanks perry the gate resistors are 100 ohm right now. So i should replace them with 47 ohm correct??

Perry Babin · 12th November 2009, 11:33 AM

Yes.

mike49504 · 9th December 2009, 03:48 AM

decided not to use the npd7060 wondering though whats a good sub for the fqp60n06's. Since its a class d amp

Perry Babin · 9th December 2009, 08:13 AM

The originals are available at Mouser.

12th November 2009, 05:36 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	mosfet question Im working on an amp the power supply fets are blown. The fets that were in there were fqp65n06 60v 79a 8.4 m Ohm i have alot of ndp7060's laying around wondering if they might work 60v 81a 12mohm wondering if theese might work for me any help would greatly be appericated

12th November 2009, 06:16 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	In a power supply they should work unless the drive circuit is weak. The 7060s are going to be a bit harder to drive so if the gate resistors are more than ~68 ohms, I'd replace them (I'd recommend 47 ohm gate resistors). __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

12th November 2009, 11:33 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Yes. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

9th December 2009, 08:13 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The originals are available at Mouser. __________________ 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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12th November 2009, 11:25 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	ok thanks perry the gate resistors are 100 ohm right now. So i should replace them with 47 ohm correct??

9th December 2009, 03:48 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	decided not to use the npd7060 wondering though whats a good sub for the fqp60n06's. Since its a class d amp

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