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Old 10th July 2013, 09:09 PM   #1
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Default Lanzar vibe 1800d issue

Hey guys, I'm trying to fix this amp for a friend but finding it incredibly hard to find a replacement transistor for one that burned out. The markings on the front are as follows:

IRFZ44N
I ( diode symbol here)R 4 18K
6M OP

can anyone identify this part, whether it's pnp or npn, and where I might be able to buy its replacement? Thanks for any help
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Old 10th July 2013, 09:40 PM   #2
llwhtt is offline llwhtt  United States
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N channel MOSFET, Mouser has them.

Craig

Last edited by llwhtt; 10th July 2013 at 09:42 PM.
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Old 10th July 2013, 10:43 PM   #3
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Little more info please. Do I need a replacement with these exact numbers on it? I'm a good solderer but limited in my knowledge of individual parts
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Old 10th July 2013, 11:23 PM   #4
llwhtt is offline llwhtt  United States
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IRFZ44N is the part number, it is still available, use the same part. If there are several in parallel they should be matched to each other. Schematic?

Craig
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Old 11th July 2013, 02:49 AM   #5
llwhtt is offline llwhtt  United States
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I just realized this is a car amplifier, try the car stereo forum. I don't do car stereo.

Craig
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Old 11th July 2013, 01:54 PM   #6
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Sorry, thought solid state would be same across the board. So that IFRZ44N would be the same no matter what other letters or numbers come after it?
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Old 11th July 2013, 04:37 PM   #7
wg_ski is offline wg_ski  United States
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The other letters and numbers just tell you where and when it was made. But each manufacturer has his own unique code. Just make sure you get an IR (now Vishay), Fairchild, ON, ST or Samsung from a real distributor and you're good to go.

The Z44, (42, 48, etc) are in end-of-life cycle, and real ones will be getting harder to get. When they do this there are fakes everywhere. These parts are being superceded by modern versions which are better and cheaper.
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