ROHS Substances
XECO inverted mesa blanks and plated blanks are inherently RoHS compliant. XECO products use cultured high quality pure quartz which is nearly 100% SiO2. The determined levels of content of RoHS Directive listed substances and other elements tested for quartz are as follows:
|
Substance |
Symbol |
Tested Results (ppm) |
|---|---|---|
|
Lead |
Pb |
<1 |
|
Mercury |
Hg |
<1 |
|
Cadmium |
Cd |
<1 |
|
Hexavalent chromium |
Cr6+ |
<1 |
|
polybrominated biphenyls (PBB) |
PBB |
<1 |
|
polybrominated diphenyl ethers (PBDE) |
PBDE |
<1 |
|
Iron |
Fe |
<1 |
|
Aluminum |
Al |
<5 |
|
Calcium |
Ca |
<1 |
|
Lithium |
Li |
<5 |
|
Sodium |
Na |
<10 |
|
Potassium |
K |
<5 |
|
Titanium |
Ti |
<1 |
|
Magnesium |
Mg |
<1 |
|
Manganese |
Mn |
<1 |
|
Copper |
Cu |
<1 |
This tables below define the maximum substance content of for XECO blanks. RoHS substances are not detectable in quartz and XECO does not use any RoHS substance in production. Hexavalent Chromium is an RoHS substance, however the chromium listed below is not an RoHS listed substance as it is not Hexavalent-Chromium.
Metal Maximums are calculated using 50% coverage of each side. Actual may be lower and determined by each unique pattern. Actual maximum for each design can be determined by determining percent coverage and recalculating.
Gold Plated Crystal Blanks
| Gold plated Crystals | Blank Area |
Material Maximums |
||
| Type | mm2 | SiO2 (mg) | Cr (ug) | Au (ug) |
| Rx098 | 4.552 | 1.326 | 1.577 | 15.814 |
| Rx126 | 5.853 | 1.705 | 2.028 | 20.333 |
| Rx138 | 6.410 | 1.867 | 2.221 | 22.268 |
| Rx150 | 9.677 | 2.819 | 3.353 | 33.618 |
| Rx196 | 12.392 | 3.610 | 4.294 | 43.050 |
| SM141 | 12.826 | 3.736 | 4.444 | 44.558 |
| SM156 | 15.701 | 4.573 | 5.440 | 54.545 |
| Maximums derived from: | SiO2 | Cr | Au | |
| Max Thickness (um) | 110 | 0.001 | 0.180 | |
| Material Density gm/cm3 | 2.648 | 6.930 | 19.300 | |
| max ug/mm2 | 291.280 | 0.347 | 3.474 | |
100% Aluminum plated Crystal Blanks
| Aluminum plated Crystals | Blank Area |
Material Maximums |
|
| Type | mm2 | SiO2 (mg) | Al (ug) |
| Rx098 | 4.552 | 1.326 | 6.145 |
| Rx126 | 5.853 | 1.705 | 7.902 |
| Rx138 | 6.410 | 1.867 | 8.654 |
| Rx150 | 9.677 | 2.819 | 13.064 |
| Rx196 | 12.392 | 3.610 | 16.729 |
| SM141 | 12.826 | 3.736 | 17.315 |
| SM156 | 15.701 | 4.573 | 21.196 |
|
Maximums derived from: |
SiO2 | Al | |
|
Max Thickness (um) |
110 | 0.500 | |
|
Material Density gm/cm3 |
2.648 | 2.700 | |
|
max ug/mm2 |
291.280 | 1.350 | |
Crystal Blanks
| Blank only | Blank Area | Material Maximum |
| Type | mm2 | SiO2 (mg) |
| Rx098 | 4.552 | 1.326 |
| Rx126 | 5.853 | 1.705 |
| Rx138 | 6.410 | 1.867 |
| Rx150 | 9.677 | 2.819 |
| Rx196 | 12.392 | 3.610 |
| SM141 | 12.826 | 3.736 |
| SM156 | 15.701 | 4.573 |
| Maximums derived from: | SiO2 | |
| Max Thickness (um) | 110 | |
| Material Density gm/cm3 | 2.648 | |
| max ug/mm2 | 291.280 | |