JST connector

I am looking for some of these JST connectors. I need the plug side. The only identification on the plug is JST Y (I believe that Y is the key type).

The machine schematic lists this- but does not indicate whether this is for the socket or the plug

B12B-J21D-GG-R (LF) (AU)

Hello deadnutscnc,

Welcome to the DigiKey TechForum.

There is B12B-J21DK-GGXR(LF)(AU) but we don’t have a lot of information about this product as it is new to us. Looking at JST site and putting in the first few numbers on that B12B-J21D it shows us the https://www.jst.com/wp-content/uploads/2025/06/eJFA-J2000.pdf document. Page 9 seems to show similar part numbers. Looks like the one on your board is the 12 pin in two rows, but since we don’t readily carry this line, we’re not going to have the mates to it. Only ones we have are some J2100 housings here: Rectangular Connector Housings | Rectangular Connectors | Electronic Components Distributor DigiKey