Recently I've been seeing an alarming number of Malaysia based SFPs 1783-SFP1GSX / A having a failure. These SFP's were purchased during the pandemic and it's a wonder if there was some kind of poor quality control during this time.
Googling around I've also seen some similar articles
https://community.hpe.com/t5/proliant-s ... GTHm3bMKUk
https://www.cisco.com/c/en/us/support/d ... 72192.html
I've been successful with Rockwell replacing all SFP's from Malaysia during the 2020-2021 production run for product that is "unopened". We still have about 11-15 of these in service and are essentially waiting for them to die.