Transcription of JESD22-A112-A Page 1
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JESD22-A112-A Page 1
jesd22 - a112 -APage 1 Test Method a112 -AJESD22- a112 -APage 2 Test Method a112 -ATEST METHOD a112 -AMOISTURE-INDUCED STRESS SENSITIVITY FOR PLASTIC SURFACE MOUNT DEVICES(From JEDEC Council Ballot JCB-95-37,Formulated Under the Cognizance of ,Committee on Reliability Test Methods for Packaged Devices)1. PURPOSEThe purpose of this test method is to identify the potentialclassification level of plastic Surface Mount Devices (SMDs) that aresensitive to moisture-induced stress so that they can be properlypackaged, stored, and handled to avoid subsequent mechanical damage duringthe assembly solder reflow attachment and/or repair test method may be used to determine what classification level shouldbe used for initial reliability initial qualification exists and no major changes have been made, thismethod may be used for reclassification to an improved level (longer floorlife up to level 2).
JESD22-A112-A Page 4 Test Method A112-A NOTE: The Scanning Acoustic Microscope is a useful tool for helping determine the level of moisture sensitivity classification of
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