2sc5198 replace with MJW 3281A?

crippledchicken · 25th August 2006, 01:04 AM

anyone familiar with these two devices? and could the mjw3281 be used as a replacement. the mjw3281 is rated 15 amp but, the 2sc5198 is a 10 amp device. thanks!

N-Channel · 25th August 2006, 04:20 AM

Several important parameters: Check the Hfe (also known as the current gain), and the F(t) or frequency of transition. The repalcement units you choose should have the same, or nearly the same Hfe as the originals. It also helps to have sufficient voltage and current ratings, which you have covered.

If I recall, the F(t) of the MJW3281/1302 is 30MHz! That is FAST!

The MJW/MJL 1302 & 3281 are some of the best output units available today. Check the ONSemi website and have them sample you some. I think the limitr is something like 25 units at a time. So get 25 NPNs & 25 PNPs.

MJW = TO-247AC case, and MJL = TO-264 case.

Cheers,

Steve

crippledchicken · 25th August 2006, 05:57 AM

hi, and thanks for the response! the f (t) is the same on the both of them and as far as the hfe, the minimums are real close and the maximums are higher at higher amperages on the mjw3281as'. i already have some on hand as well as the mjw1302as' so i might just give them a try and see how they perform. thanks again!

N-Channel · 25th August 2006, 06:12 AM

Let us know how they perform.

25th August 2006, 01:04 AM	#1
crippledchicken diyAudio Member Join Date: Dec 2003 Location: south east mo.	2sc5198 replace with MJW 3281A? anyone familiar with these two devices? and could the mjw3281 be used as a replacement. the mjw3281 is rated 15 amp but, the 2sc5198 is a 10 amp device. thanks!

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25th August 2006, 04:20 AM	#2
N-Channel diyAudio Member Join Date: Mar 2003 Location: Sol System	Several important parameters: Check the Hfe (also known as the current gain), and the F(t) or frequency of transition. The repalcement units you choose should have the same, or nearly the same Hfe as the originals. It also helps to have sufficient voltage and current ratings, which you have covered. If I recall, the F(t) of the MJW3281/1302 is 30MHz! That is FAST! The MJW/MJL 1302 & 3281 are some of the best output units available today. Check the ONSemi website and have them sample you some. I think the limitr is something like 25 units at a time. So get 25 NPNs & 25 PNPs. MJW = TO-247AC case, and MJL = TO-264 case. Cheers, Steve

25th August 2006, 05:57 AM	#3
crippledchicken diyAudio Member Join Date: Dec 2003 Location: south east mo.	hi, and thanks for the response! the f (t) is the same on the both of them and as far as the hfe, the minimums are real close and the maximums are higher at higher amperages on the mjw3281as'. i already have some on hand as well as the mjw1302as' so i might just give them a try and see how they perform. thanks again!

25th August 2006, 06:12 AM	#4
N-Channel diyAudio Member Join Date: Mar 2003 Location: Sol System	Let us know how they perform.

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