2SK3057 Substitution

91h22a · 25th May 2011, 04:02 PM

Hello and thanks for reading.

I am repairing an eclipse amplifier that has 2SK3057 mosfets in the power supply section and 2 are missing. This amp has been gone through by someone else and it is not looking good!

My question is would a STP55NF06FP work in it's place?

http://www.st.com/stonline/books/pdf/docs/7544.pdf
VDSS : 60v
ID: 50A (k3057=45A)
RDS 18mOhm max (k3057=17mOhm)
Ciss: 1300pF (k3057=2100pF)
The STP55 is faster in turn on and rise times but it seems to be a viable option.

I looked at the IRFIZ series but they only handle 37 amps (IRFIZ48).
I appreciate any thoughts or advice as I have not had to substitute yet in my limited experience.

Perry Babin · 25th May 2011, 04:21 PM

Those should work.

91h22a · 25th May 2011, 04:29 PM

Thanks for the fast response Mr Babin!

25th May 2011, 04:02 PM	#1
91h22a diyAudio Member Join Date: Sep 2007	2SK3057 Substitution Hello and thanks for reading. I am repairing an eclipse amplifier that has 2SK3057 mosfets in the power supply section and 2 are missing. This amp has been gone through by someone else and it is not looking good! My question is would a STP55NF06FP work in it's place? http://www.st.com/stonline/books/pdf/docs/7544.pdf VDSS : 60v ID: 50A (k3057=45A) RDS 18mOhm max (k3057=17mOhm) Ciss: 1300pF (k3057=2100pF) The STP55 is faster in turn on and rise times but it seems to be a viable option. I looked at the IRFIZ series but they only handle 37 amps (IRFIZ48). I appreciate any thoughts or advice as I have not had to substitute yet in my limited experience.

25th May 2011, 04:21 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Those should work. __________________ 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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25th May 2011, 04:29 PM	#3
91h22a diyAudio Member Join Date: Sep 2007	Thanks for the fast response Mr Babin!

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