For all practicalpurposes there is no Class 1 solder mask.Class 2 is equivalent to Class T (Telecommunications).Class 3 isthe equivalent of Class H (Military/high reliability).Solder mask materials covered in the standard are notintended for use as a substitute for conformal coatings thatare ...
Flame Retardancy - T Class XXX Resistance to XXX-Lead Solder 固化阻焊材料的颜色应为供应商证明合格的标准颜色或透明无色素的。要求固化水平符合3.5到3.9相应章节之中的某些或全部要求,并由供需双方商定确定评估要求的条数。监控测试或其他控制固化过程的测试方法也可接受,需由供需双方商定。防霉性不在测试要求范...
mentsinthissectionforsoldermask,testingtoIPC-SM- 840C,January1996,Class‘‘T’’requirementsshallbe acceptable.TherequirementscontainedintheIPCdocu- mentaresimilarorequivalenttotheonescontained herein.’’ 1.3Classes Addthefollowingparagraphattheendofsection: Note:Soldermasktypeswerepreviouslydescribedas Type...