V-15-2C26-K is a non-stocking part that we have had several requests for. It currently has approximately 14 weeks lead time.
An alternative for that part is part number V-15-2C26.
Here is a link comparing the two side by side for comparison.
https://www.digikey.com/short/zfb87q
The datasheet doesn’t show anything on the “K” suffix. Below is an explanation from Omron.