Anyone want some MOSFET entertainment on Sunday evening? Got time and some good IPA?
I was casually researching some large sized MOSFETs and smacked into some disinformation which makes me want to laugh or cry…not sure which to do first. Why limit disinformation to American/Russian/British politics? If I can report this without typos to add to the confusion I will be amazed. I started out sorting some 40V to 60V FETs on the Digikey website.
I am looking at the NTMTS0D6N04C from ON Semi. My first reaction is “That is pretty good. It looks like ON has gotten into making FETs in 5 x 6 mm footprint similar to Infineon and Vishay.” But wait. This is not 5 x 6 mm. It is roughly 8 x 8 mm. OK it is a big FET. But that is not all; they put the gate connection on pin 1 instead of pin 4 as on the Vishay and Infineon 5x6 mm packages.
OK. I wonder if any other manufacturer puts FETs in the same package and pinout?
According to the sorting table at Digikey, for this FET the package is an 8-PowerTDFN and the supplier device package is 8-DFNW. According to the ON datasheet, the package is DFNW8, and Case 507AP. On the datasheet front page, it is also called “Power 88”.
That is all simple enough, right? (sarcastic) But I will try sorting the table at Digikey. I try filtering to the 8-PowerTDFN package/case. (Use the “more filters” button.)
Hey! I find the Infineon BSC007N04LS56ATMA so I open up the datasheet. Which says that the package is their TDSON-8 FL. And that is a 5 x 6 mm package with the gate connected to pin 4. No Problem! (sarcastic again.)
So let’s try the “DFNW8” designation which is listed on the ON Datasheet. I do not see that under either “Package/Case” or “Supplier Device Package” filters but I do find “8-PowerWDFN” under “package/case” so let’s try that. Arbitrarily picking out a couple from the list:
Here is another 5x6 mm package; an ST STLD200N4F6AG and an ON Semi NTTFS5C454NL which is in a 3x3 mm package.
I think I could try to follow this trail further, but I do not want to end up somewhere such as either Alice in Wonderland or North Korea. But if you THINK that you do not understand then you do “get it” and in fact you do understand… Just be VERY CAREFUL in selecting and using these MOSFETs!
Confusion begetting confusion…