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moomoo
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Join Date: Jun 2008
Posts: 121
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Hazardous Substance Directive - Restriction.

01/01/2013 10:12 PM

Hi ,

Would like to ask if the ROHS directive for the six toxics cover only homogenous components as well as non-homogenous components.

For example the plastics , i can ask the ROHS data from the supplier, but for pcb, it has tin,copper and pcb material . As i understand the specs are asking for less than 1000 ppm by weight on homogenous material, but does that limit also apply for non homo materials, like electronic components and pcb etc.

thanks

moomoo

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lyn
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Join Date: Oct 2008
Posts: 42355
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#1

Re: Hazardous Substance Directive - Restriction.

01/02/2013 10:08 AM

From Wiki: "Everything that can be identified as a homogeneous material must meet the limit."
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Just an Engineer
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#2

Re: Hazardous Substance Directive - Restriction.

01/02/2013 3:36 PM

When we were involved in building electronic asemblies, it was necessary to report the "componentised" content of the product.

Thus for a pcb assembly, we were required to report the amount of FR4, the amount of copper, the amount of solder (and it's composition), the electronic components and the content of their terminations.

I understood that this was so that it was not possible to "dilute" the content into the total mass.

That was over four years ago now, so the interpretation may have changed.

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James Stewart
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Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

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#3
In reply to #2

Re: Hazardous Substance Directive - Restriction.

01/03/2013 9:16 AM

So this is about recycling pcb materials?

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lyn
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Posts: 42355
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#4
In reply to #3

Re: Hazardous Substance Directive - Restriction.

01/03/2013 9:19 AM

Basically, yes. But not just pcb's.

Waste Electrical and Electronic Equipment Directive
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