Vishay/Siliconix vs. IR irfp150

amt · 22nd May 2010, 03:16 AM

I checked the specs and to the best of my limited semiconductor knowledge, they appear to be close to identical. So why the huge difference in cost?

Id like to use a $3 part vs. an $8 part if performance is equal. Am I missing something or are the Vishays of much higher quality, limited production or......

irfp150

amt

BobEllis · 22nd May 2010, 03:38 AM

IR sold the product line to Vishay a couple years ago. You can use the IRFP150PBF @ $2.43/10 pieces. The $8 parts are the old style leaded parts, limited production therefore more expensive. Note that Mouser only has one IR part left.

amt · 23rd May 2010, 07:20 PM

Thanks for the info. One thing though, the IR are the older parts I believe and the Vishay the newer so they must be selling the old part cheaper and the new one is now almost 3X.

And I dont understand the RoHS requirement. The new part isnt compliant but the older one gets a waiver?

amt

22nd May 2010, 03:16 AM	#1
amt diyAudio Member Join Date: Feb 2003 Location: oregon	Vishay/Siliconix vs. IR irfp150 I checked the specs and to the best of my limited semiconductor knowledge, they appear to be close to identical. So why the huge difference in cost? Id like to use a $3 part vs. an $8 part if performance is equal. Am I missing something or are the Vishays of much higher quality, limited production or...... irfp150 amt

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22nd May 2010, 03:38 AM	#2
BobEllis diyAudio Member Join Date: Sep 2003 Location: Upstate NY	IR sold the product line to Vishay a couple years ago. You can use the IRFP150PBF @ $2.43/10 pieces. The $8 parts are the old style leaded parts, limited production therefore more expensive. Note that Mouser only has one IR part left.

23rd May 2010, 07:20 PM	#3
amt diyAudio Member Join Date: Feb 2003 Location: oregon	Thanks for the info. One thing though, the IR are the older parts I believe and the Vishay the newer so they must be selling the old part cheaper and the new one is now almost 3X. And I dont understand the RoHS requirement. The new part isnt compliant but the older one gets a waiver? amt

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