As per Tray's specifications, the material was packaged.There is no doubt that the QFN is the most cost-effective package in the electronics industry.Finding the related parts of a Base Part Number NT22L31 is possible.
NT22L31-QFN Features
Supplied in the QFN package
NT22L31-QFN Applications
There are a lot of Semtech Corporation NT22L31-QFN Laser Driver ICs applications.