Acronym · Reliability & Quality
MSL (Moisture Sensitivity Level)
A one to six classification of how long a surface mount plastic package may sit exposed to factory humidity before reflow soldering without risking moisture induced cracking or delamination.
MSL 1 needs no limit while MSL 6 must be baked and reflowed immediately.
- Also known as
- Moisture sensitivity rating, Moisture sensitivity level, MSL rating
- Type
- Acronym
- Domain
- Reliability & Quality, Package reliability
- Also relevant to
- Packaging & Assembly
Notes
Determined per J-STD-020 and printed on the dry pack label, with a humidity indicator card and desiccant inside the moisture barrier bag.
Related terms
Part of the Reliability & Quality glossary, with every term in the topic and the lifecycles, tools and standards that use them.
Where it appears on the Hub
Used on 3 pages of the Hub. In each group, the pages that mention it most come first.
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