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Old 22nd July 2015, 09:47 AM   #1
prusony is offline prusony  Belarus
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Default IRFP240 + IRFP9240 + EBAY...

HI friends.
Please look link:

2pcs IRFP240 IRFP9240 MOSFET Matched | eBay

There is word "MATCHED", is it real?
Somebody bought and tested parameters?
Where to buy genuine?
Thank You. Alex.
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Old 22nd July 2015, 10:28 AM   #2
thimios is offline thimios  Greece
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Stay away!
Look here.Recommended.IRFP240 Matched 3 Quad Set for Class A Amplifiers | eBay
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Old 22nd July 2015, 10:47 AM   #3
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Try purchasing from a propper wholesaler.
http://uk.farnell.com/international-...earchLookAhead
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Old 22nd July 2015, 10:49 AM   #4
thimios is offline thimios  Greece
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They don't sell matched parts.
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Old 22nd July 2015, 11:20 AM   #5
prusony is offline prusony  Belarus
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Thank for answers.
But i need pair of N-channel and P-channel MATCHED-pair.
BR, Alex

Last edited by prusony; 22nd July 2015 at 11:25 AM.
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Old 22nd July 2015, 11:28 AM   #6
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There is no such thing as matched pair of IRFP240 and IRFP9240, they only "match" in terms of voltage and current capacity. Even NPN and PNP transistors are almost impossible to have matched pairs and MOSFETs have much more differing parameters.
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Old 22nd July 2015, 04:44 PM   #7
prusony is offline prusony  Belarus
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Thank you and sorry for stupid question ...
IRF240 and 9240 - no complementary MOSFETs .
(I was sure that they are complementary.... and did not try to read datashet)
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Old 22nd July 2015, 05:06 PM   #8
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I won't buy critical transistors on ebay.
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Old 22nd July 2015, 06:08 PM   #9
AndrewT is offline AndrewT  Scotland
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Originally Posted by prusony View Post
HI friends.
Please look link:

2pcs IRFP240 IRFP9240 MOSFET Matched | eBay

There is word "MATCHED", is it real?
Somebody bought and tested parameters?
Where to buy genuine?
Thank You. Alex.
the Ebay listing does not state which parameter is matched !!!!!
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Old 23rd July 2015, 05:12 AM   #10
prusony is offline prusony  Belarus
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If read PDF - 240 and the 9240 is not a perfect match ...
Just look digits:

...................Vds......Rds......Qg......Qgs.. ....Qgd.......Id........Ciss..........Coss
...IRFP9240....200......0,5.......44......7,1..... ...27........12.......1200.........370...
....IRFP240.....200.....0,18......70......13...... ...39........20.......1300.........400...
...IRFP9140....100......0,2.......61......14...... ...29........21.......1400.........590...

Perhaps 9140 and 240 better?.....

(All MOSFETs from Vishay Siliconix.)
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