Vishay/Siliconix vs. IR irfp150 - diyAudio
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Old 22nd May 2010, 04:16 AM   #1
amt is offline amt  United States
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Default 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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Old 22nd May 2010, 04:38 AM   #2
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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.
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Old 23rd May 2010, 08:20 PM   #3
amt is offline amt  United States
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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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