This calculator provides guidance on the classification level of plastic devices that are sensitive to moisture induced stress so that they can be properly stored and handled prior to assembly solder reflow attachment and/or repair operations.
If you do not know the device family, product line and IC packaging of the product, type in the part number in the search query on the top of this page. If it is a valid part number, then the search result returns the information you need. A lead-free part number is denoted by the suffix "N".
Moisture/Reflow Sensitivity Classification
If a device is classified as MSL 1, it is not moisture sensitive and the device does not have to be dry packed again after the pack has been opened.
If a device is classified at a higher numerical level, it is moisture sensitive and must be dry packed in accordance with J-STD-033.
If a device is classified as Level 6, it is extremely moisture sensitive and the dry pack will not provide adequate protection. Please refer to Altera's packing label on the baking time before reflow soldering.
Table 1. Moisture Sensitivity levels and Floor Life
Level
Floor Life
Time
Conditions
1
Unlimited
< or = 30C/85% RH
2
1 year
< or = 30C/60% RH
2a
4 weeks
< or = 30C/60% RH
3
168 hours
< or = 30C/60% RH
4
72 hours
< or = 30C/60% RH
5
48 hours
< or = 30C/60% RH
5a
24 hours
< or = 30C/60% RH
6
Time on Label
< or = 30C/60% RH
* This calculator is designed to help you determine the moisture sensitivity level (MSL) value of an Altera® device based on specified input parameters. The calculator and MSL values contained herein are for classification level reference only and should not be used or relied upon for soldering or any other purposes. Please refer to the MSL on Altera’s packing labels to determine the criteria for baking prior to soldering. Although Altera makes every attempt to keep the information on this website current, we do not promise or guarantee that the information is correct, complete, or up-to-date. Altera may make changes to the materials at this site, or to the products described in them, at any time without notice. The calculator provided at this site is provided on an “as-is” basis. Altera makes no representations, warranties or guarantees, express or implied, as to the calculator or its results, including as to the accuracy, completeness, or genuineness thereof, or suitability for any purpose other than as indicated above.
文档资料
> 
