The best I could find was in the LNE Drivers catalog from 2017 when I guess these were first released it says:
"Delta warrants that the products (“Products”) sold in this catalog will be free of defects in material and workmanship within the warranty period. The warranty does not apply to Products which have been subjected to abuse, misuse, accident, neglect, unauthorized and/or improper installation, operation, use, maintenance, repair or alteration, or accident of unusual deterioration or degradation of the Products or parts thereof due to physical environment beyond the requirements of the Product specifications."
So sounds like it does have a warranty, but I have not found out how long it is good for. I guess I will email Arrow to see if they offer a standard 1yr at least on any items purchased. For $12 a pop I almost don't care.