Under the previous version of the IPC/JEDEC standard J-STD-020D, our products were not covered as the standard only mentioned semiconductor devices.
However, the latest standard version, J-STD-020E, now covers all Surface Mount products. Harwin products have not been specifically tested under this standard, and as such we can only state what our perceived MSL level is at this time.
Harwin products have a shelf-life of three years, after which they should be validated to check solderability. This falls between MSL levels 1 and 2, so we will generally quote MSL level 1 for Harwin products.
Further information on shelf-life is available on this FAQ subject. Harwin's policy on MSL and Shelf Life is available on this page.