Interest for genuine NOS Harris IRFP9240s, Vgs matched quads and pairs

[EUVL]

Just to show you a typical (average) quad set.
First column is Vgs @ 1.25A, second column is Yfs at same current.
Matched at room temperature, so the values at 55°C heat sink will change.

4.305 3.44
4.306 3.44
4.307 3.42
4.308 3.43

You should all be very pleased with what you are getting.


Patrick

 

[gary s]

That is very impressive matching for those devices Patrick. Can I ask what is Yfs - as that term is not mentioned in the Harris datasheet at all. The datasheet I assume will call that something else maybe.

Members should be pleased.

 

[Dennis Hui]

That should be the transconductance.

 

[gary s]

OK thanks Dennis, Gfs on the Harris data sheet.

Cheers,

Gary..

 

[EUVL]

Definition of Yfs and Gfs
http://literature.cdn.keysight.com/litweb/pdf/5990-8733EN.pdf

Difference between transadmittance and transconductance
Transconductance - Wikipedia

Please use google.


Patrick

 

[Dennis Hui]

To the participants of this GB:

Thanks for waiting.

Please PM me with your forum handle/real name, your postal info, a contact telephone number.
(Canada post likes to ask for a phone number).

I will reply with payment info.

Thanks,
Dennis

 

[EUVL]

Dennis,

Please check email.


Thanks,
Patrick

 

[Dennis Hui]

A quick update. Over half of the packages have been mailed out. Thanks.

 

[EUVL]

We are all very grateful for all the donkey work you did for us.


Most appreciated,
Patrick

 

[brianco]

A quick update. Over half of the packages have been mailed out. Thanks.

Thanks to both of you (Euvl and Dennis) for making this possible.

 

[Dennis Hui]

Glad to be of assistance.

Except for one member with whom I'm trying to clarify some info, all other packages
have been shipped as of today.

As stated before, there is no tracking/insurance with these packages. I've taken
pictures before heading to the post office. If you want to see yours, please send
me an email (which you should already have) so I may reply with the info.

Cheers,
Dennis

 

[Itsmee]

Package arrived 10 minutes ago

Thank you Dennis for arranging

 

[yoaudio]

Package arrived 12 minutes ago.

Thanks again!!

yo

 

[brianco]

......They have arrived - safe and sound thanks to Dennis's excellent packaging. Thank you for an excellent GB and trouble free regarding being the 'real thing' service.

 

[feds27]

Hi Dennis, thanks so much for putting this together. I received my order today and everything was very well packed. Looking forward to using these.

 

[darrr]

Glad to be of assistance.

Except for one member with whom I'm trying to clarify some info, all other packages
have been shipped as of today.

As stated before, there is no tracking/insurance with these packages. I've taken
pictures before heading to the post office. If you want to see yours, please send
me an email (which you should already have) so I may reply with the info.

Cheers,
Dennis

Such a nice small packages must have take a lot of time to prepare. Thank you Denis for all the work you did.