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Help with MOSFETs identification

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sreekris

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Hello,
I'm working on a dry-well calibrator's power supply unit with 2 defective ST Microelectronics MOSFETs. The part numbers printed on the parts are 31N310 and 31P310 (photo attached).

I tried locating datasheets for these parts but couldn't find anything. Emailed ST but it's been over 2 months now with no answers. Will be appreciative if someone in this forum can help. Thanking you guys in advance. IMG_5999.JPG
 

Hello,
I'm working on a dry-well calibrator's power supply unit with 2 defective ST Microelectronics MOSFETs. The part numbers printed on the parts are 31N310 and 31P310 (photo attached).

I tried locating datasheets for these parts but couldn't find anything. Emailed ST but it's been over 2 months now with no answers. Will be appreciative if someone in this forum can help. Thanking you guys in advance.View attachment 123961

Hi d123,
Thank you very much for your help. I believe "VNP20N.." is the correct part number and to be perfectly honest with you, I did not notice it until after reading your reply. Was completely fixed on those 31N310 and 31P310. Don't know why ...

Many many thanks again. Cheers....:p:p:p
 

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