Where can I find the weight of PI packages?

Which part and package are you interested in? 

-The Traveler

I'd like to know the weight of TO-220-7C and eSIP-7C packages.

Thanks! 

Sorry, I forgot the part.

Parts are: TOP261EN and TOP261YN.

I pulled some parts from labstock and weighed them.  This is just an average of a handful of ICs and from only one lot but it should get you pretty close.

TOP261EN - 48 IC's = 23.8 grams =  ~0.50 grams per IC

TOP261YN - 25 IC's = 48.2 grams =  ~1.93 grams per IC

For the Y package part, the weight per IC will be smaller in an actual production use scenario due to excess material from the IC legs getting cut off after soldering.

I hope that helps, 

-The Traveler

It helps a lot.

Thanks for the information.