December 29, 2020
Halogen Free PCB legislation
What global legislation dictates
the specification of Halogen Free PCBs? Is the Montreal Protocol
included? Have there been any generic reliability risks identified for
Halogen Free PCBs which are to be used in Aerospace or Military
applications? To get more news about Halogen Free PCB, you can visit pcbmake official website.
Outside of San Francisco, there is no current legislation or regulation
(and there is no such thing as 'global legislation' --that would
require a global government) in the world that requires removal of all
halogens from PCBs. There is pressure from NGOs like Greenpeace to
remove all bromines from electronics, however, and iNEMI has a project
underway to identify replacements in PCBs. San Francisco banned
bisphenol A in products and child care items for infants/toddlers under 3
years of age.
See my article, Bisphenol-A and phthalates banned
from electronic toys. This would restrict the sale of electronics
intended for this age group due to TBBPA in PCBs and components.
However, the American Chemistry Council, which is the chemical industry
lobbying organization, filed suit recently and succeeded in obtaining a
temporary injunction. See the article " City sued over ban on children's
products using suspect chemicals Plaintiffs say state law pre-empts the
local ordinance." Also, Sweden is investigating whether to restrict
TBBPA (tetrabromobisphenol A), which is used in PCBs. They have been
warned that this would effectively make electronics unavailable in
Sweden (even if it were removed from PCBs it is used extensively in
"plastic" packaged electronic components like integrated circuits and
tantalum capacitors).
I think the questions confuses two different approaches for different classes of materials.
The Montreal protocol included CFC materials in a product but also
material used to make a product even if it was not left in the finished
article. The legislation for halogenated flame retardents covers
materials actually in the pcb. The Montreal protocol had global
government signatories but as far as I know, regional legislation covers
halogenated flame retardents. I am not aware of specific issues raised
for halogen-free pcb for aerospace/military applications but cannot say
for sure that none have been identified.
Posted by: wisepowder at
12:15 PM
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