Semi-finished product · Electronic components
Printed circuit board assembly
One kilogram of assembled printed circuit board
This page shows what the product is made of and where each figure comes from. It shows no death toll. The toll is computed from this bill of materials from session 19, and published only once it has an uncertainty interval and has passed a backtest.
A printed circuit board by mass, as sixteen studies average it: 34.7% metals — copper 21.4%, iron 3.3%, tin 3.1%, aluminium 3.0%, lead 1.9%, nickel 1.0%, zinc 0.7%, silver 0.13%, palladium 0.05%, gold 0.04%, tantalum 0.01% — and 65.3% glass fibre, epoxy resin and other non-metals. Boards differ by product and age; the source's standard deviations are as large as some of the means.
- Overall grade — medium
- Status — draft
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What it is made of
Each line is one component of one kilogram of assembled printed circuit board: how much of it goes in, how much had to be produced for that, and where the figure comes from.
Down to raw materials
The whole chain multiplied out — everything one kilogram of assembled printed circuit board needs, through every intermediate product, with every loss on the way included.
| Input | Per functional unit |
|---|---|
| Bauxite | 121 g |
| Coal and lignite | 19.4 g |
| Copper | 214 g |
| Gold | 0.400 g |
| Iron ore | 37.2 g |
| Nickel | 10.3 g |
| Silver | 1.30 g |
| Tantalum | 0.100 g |
| Tin | 31.4 g |
| Zinc | 7.30 g |
| Electricity, electric arc furnace route (not in the register) | 0.0226 MJ |
| Lead (not in the register) | 18.6 g |
| Limestone (not in the register) | 7.07 g |
| Non-metallic fraction — glass fibre, epoxy resin and other (not in the register) | 653 g |
| Palladium (not in the register) | 0.500 g |
| Recycled steel (scrap) (not in the register) | 9.86 g |
An input marked “not in the register” is counted by mass and reaches no supply chain yet. Industries appear as the euros or tonne-kilometres the bill of materials gives them.
How much of it is explicit
100% of this product’s mass is explicit in its own bill of materials.
Its whole chain draws on 1.13 kg of materials, losses included. 39% of that is registered raw materials — the part the model can trace harm to — 61% is inputs not yet in the register, and 0% is a declared remainder.
In the input–output model it belongs to “Manufacture of computer, electronic and optical products” (FIGARO industry C26).
In the input–output model it belongs to “Manufacture of computer, electronic and optical products” (FIGARO industry C26).
What uses it
Products whose own bill of materials includes this one.
- Laptop — 336 g in one laptop of 2,706 g, the average of 16 disassembled models from 1999 to 2011
- Smartphone — 18.9 g in one smartphone of 135 g, the average of 12 disassembled models from 2004 to 2015
The number this page does not show
The harm in this chain is not shown.
The model allocates the harm counted where each raw material is produced to the products that use it. That number is a count of people with a run behind it and no uncertainty interval yet, and nothing of that kind is published before the backtest of session 21. What this page can show without it is the structure: what the product is made of, and where each part of that knowledge comes from.