Will my old Suica work?

I bought my card as the old "N'ex-Suica" card and ticket combo back in 2012. I go to Japan every couple years and it has always worked. Last time I used it was in 2019. Does the chip inside it die eventually and the only way to find out is when I arrive in Tokyo in October and try to load money on it?

I read somewhere that it is good for 20 years since the last use. Even if it expires you can get refund for remaining balance.

Last time I used it was in 2019.

You can resume using that Suica card later in 2023.

The e-money stored on a Suica card
should be good for 10 years after the card was used last.

Still, I recommend you visit a JR-East counter
and have that Suica card checked.
A gate machine may stop you
because the latest record of your card is very old.

Have a nice trip!

Agreed, we have used Suica's purchased in 2013 for years, and in March this year-first use since December 2018- they were fine.

Enjoy your trip!