Moisture sensitivity level (MSL) is a rating that shows a device's susceptibility to damage due to absorbed moisture when subjected to reflow soldering as defined in J-STD-020. It relates to the packaging and handling precautions for some semiconductors.

Most semiconductor products are rated MSL3 or higher. MSL 1 is the highest rating where it is considered as being not moisture sensitive even at 85% RH and components rated MSL1 do not require dry packing.

Jul 23, 2019 · The Moisture Sensitivity Level – known in the electronics industry as simply “MSL” – helps identify how long a component can be exposed to 60-85% relative humidity at temperatures less than 86 degrees F before it becomes …

MSL 1: Components in this category have the lowest sensitivity to moisture and can typically be exposed to ambient air without special precautions. They have a long shelf life and are considered moisture-insensitive. MSL 2: Components in this category …

Thus, MSL1 correspond to packages that are immune to popcorn cracking regardless of exposure to moisture, while MSL5 and MSL6 devices are most prone to moisture-induced fracture. Table 1 below presents the MSL definitions per IPC/JEDEC's J-STD-20. Table 1. IPC/JEDEC J-STD-20 MSL Classifications

Moisture sensitivity level (MSL) is a rating established by JEDEC for electronic components that indicates the floor life of the component and provides the maximum allowable exposure for electronic components in humid environments.

MSL defines moisture absorption into 6 different levels through standard test methods and criteria. The MSL 1 classified non-hermetic package is the least sensitive to moisture and MSL 6 is the most sensitive.

Moisture Sensitivity Level (MSL) is a standard defined by IPC/JEDEC J-STD-020 that indicates how susceptible a moisture/reflow-sensitive electronic component is to moisture-induced stress during storage, handling, and the PCB assembly process.

Jan 20, 2025 · Correct understanding of pcb msl levels can prevent component damage, enhance quality control and ensure product compliance. MSL levels range from 1 to 6, where level 1 represents the lowest sensitivity to moisture and level 6 represents the highest. Here is a detailed classification of each level: Share This Story, Choose Your Platform!

Level in the following table indicates the moisture sensitivity level, the level is from 1 to 6, and in principle level 1 (MSL 1) indicates that the parts have the lowest moisture requirements, that is, the less susceptible to moisture.