无卤一般不是要求不含卤素,通常是指要求卤素的含量低于某个标准的大限值,至于限值是多少,不同的标准有不同的限值要求。附:无卤素要求的。
•JPCA(JapanElectronicsPackagingandCircuitsAssociation)JPCA-ES-01-1999definescriteria
andmethodfor“halogen-free”
--Br<0.09wt%(900ppm)
--Cl<0.09wt%(900ppm)
•IEC(InternationalElectrotechnicalCommission)
–FinalizedrequirementsofIEC61249-2-21:
•900ppmmaximumCl
•900ppmmaximumBr
•1500ppmmaximumtotalhalogens
•IPC-4101BhasadoptedtheIECdefinitionofhalogen-free
•1500ppmmaximumtotalhalogen