I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N50FS

[DXseekerMO]

I don't get frustrated all that often, but when I do, I drink whiskey

I need to order a replacement for MOSFET KF5N50FS, but there are so many damn choices on DIGIKEY that I DON'T KNOW WHICH ONE TO GET, or if ANY OF THEM ARE A CORRECT REPLACEMENT!!!!!

All the differences in specs are CONFUSING AND FRUSTRATING THE ABSOLUTE HELL OUT OF ME so I was hoping someone here may be able to help?

And dammit all to hell anyways WHY DO THEY MAKE THIS CRAP SO DAMN CONFUSING????? One part number and 8 million different specs? I mean for F*** sakes I'm about ready to go have a long visit with my Old Grand Dad!

[ecking767]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

why not just order the original part from aliexpress.com

https://www.aliexpress.com/wholesale...hText=KF5N50FS

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

That may be the best idea I've heard all day! I never heard of that place and they didn't seem to google. Are they stateside or overseas?

[ecking767]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

China, I buy from them all of the time, I buy IC chips from there and never had any problem

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Darn, I almost hate to give someone in China my debit card number for fear of my bank account being drained. Ever had any trouble like that with them? Counterfeit parts? I hear stories about ordering from China....

[ecking767]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Well , I don't like to give my debit card number period when making any purchase on anybody website local or international, I always use a credit card for all of my purchases on any website local or International

there is no protection when you use a debit card

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

That's what I was afraid of

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Any way to get those stateside?

[petehall347]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

http://nikkoe.com/catalogsearch/result/?q=KF5N50FS

[ecking767]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

but the website is safe when making any purchases by credit or debit card. this is a multi-millon company, credit card is best to use.

they also have other ways to pay like money gram

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

http://nikkoe.com/catalogsearch/result/?q=KF5N50FS

Thanks for the link!

but the website is safe when making any purchases by credit or debit card. this is a multi-millon company, credit card is best to use.

they also have other ways to pay like money gram

Ahhhh...I see. So it's unlikely they will steal me blind? lol

[ecking767]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

even if you paid with a debit card you should be okay. or you can buy one of the prepaid credit card and you should have protection that way too.

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Right on, I like the pre-paid card idea....I may do just that for overseas ordering. GREAT idea!

I'd really like to know how to spec that out and find an identical spec one on Digikey. Maybe one of these days.

Thanks to you guys for your input and links. My frustration level has come way way down!

[mmartell]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Chat with Digikey and explain you need a replacement part as good or better. They're pretty helpful.

[dick_barton]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Here's a MOSFET equivalent page you may find useful to bookmark

https://alltransistors.com/mosfet/cr...5&caps=TO220IS

[tom66]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

General rules for MOSFETs.

PACKAGE - must be identical or mechanically compatible. Ensure that metal tab version replaced with metal tab. Ensure that plastic tab version replaced with plastic tab.

VDSS - must be same or higher

IDSS - must be same or higher

RDSon - must be same or lower

Qg(TOTAL) - must be same or lower

Vth - ideally same or lower; up to 0.5V higher is acceptable

[angelos]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Nicely summed up Tom!

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

This is excellent! Thanks for this valuable information, this will help me out a lot guys!

[budm]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

https://cdn.badcaps-static.com/pdfs/...7da7f2061e.pdf
https://cdn.badcaps-static.com/pdfs/...e701a703b0.pdf
https://cdn.badcaps-static.com/pdfs/...19d1be1cc7.pdf
https://cdn.badcaps-static.com/pdfs/...3b3483e353.pdf
https://cdn.badcaps-static.com/pdfs/...21a7cc1c83.pdf
https://training.ti.com/understandin...ing-parameters
http://micro.rohm.com/en/techweb/kno...i/03-s-si/4955

Look at the switching time also.

[DXseekerMO]

Re: I am FRUSTRATING THE P*** out of myself trying to find a replacement MOSFET KF5N5

Thanks budm, this will be a good read for me!