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zui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(Japan Electronics Packaging and CircuitsAssociation)JPCA-ES-01-1999 defines criteria
and method for“halogen-free”
--Br<0.09wt%(900ppm)
--Cl<0.09wt%(900ppm)
•IEC(International Electrotechnical Commission)
–Finalized requirements of IEC 61249-2-21:
•900 ppm maximum Cl
•900 ppm maximum Br
•1500 ppm maximum total halogens
•IPC-4101B has adopted the IEC definition of halogen-free
•1500 ppm maximum total halogen