Tablet Device

Material Composition Assumptions

The standard tablet device modeled weighs 500 grams and consists of five primary material categories. The aluminum enclosure represents the largest component at 250 grams, accounting for 50% of total device weight. The glass display assembly contributes 100 grams or 20% of the weight. Battery and electronics components combine for 75 grams, representing 15% of the total mass. Plastic components including the internal frame and connectors weigh 50 grams at 10% of device weight. Additional materials including adhesives, small metal components, and packaging materials account for the remaining 25 grams or 5% of the total weight.

This composition reflects modern tablet designs featuring premium aluminum construction with integrated lithium-ion batteries and high-resolution displays. The material breakdown aligns with teardown analyses of popular tablet models and represents typical mid-range to premium tablet specifications.

Manufacturing Geography

Tablet production concentrates primarily in China, Taiwan, and South Korea, where major original equipment manufacturers and component suppliers maintain fabrication facilities. The electrical grid intensity for this manufacturing region averages 650 gCO2e/kWh based on China’s energy mix, which heavily influences the overall carbon footprint due to the electricity-intensive nature of semiconductor and display production.

China dominates tablet assembly operations while Taiwan and South Korea specialize in high-value components like processors and displays. This geographic concentration creates supply chain efficiencies but also concentrates carbon emissions in regions with relatively high grid carbon intensity compared to global averages.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	650 gCO2e/kWh	100	Baseline
Europe	300 gCO2e/kWh	75	-25%
United States	400 gCO2e/kWh	85	-15%
Japan	500 gCO2e/kWh	92	-8%
India	720 gCO2e/kWh	108	+8%

Provenance Override Guidance

Organizations can submit specific product data to override the default CCI score through the following priority data types:

1. Third-party verified life cycle assessment results covering cradle-to-gate emissions for the specific tablet model including all upstream material production and manufacturing processes.

2. Supplier-specific environmental product declarations showing actual production facility locations, energy sources, and measured emissions data for component manufacturing including processors, displays, and aluminum processing.

3. Bill of materials with exact component weights, material specifications, and supplier locations to enable more precise material-level emissions calculations for the specific product configuration.

4. Manufacturing facility energy consumption data and renewable energy procurement records demonstrating actual grid intensity or clean energy usage during production rather than regional averages.

5. Transportation and logistics data showing actual shipping routes, methods, and distances from component suppliers through final assembly to distribution centers.

Methodology Notes

• The CCI score represents cradle-to-gate embodied carbon emissions including all upstream material extraction, component manufacturing, and final assembly through the factory gate
• Scope 2 emissions dominate at 78% due to electricity consumption during energy-intensive semiconductor fabrication and display panel production in regions with carbon-intensive electrical grids
• The functional unit covers one complete tablet device weighing approximately 500 grams with standard specifications including aluminum enclosure, lithium-ion battery, and touchscreen display
• User phase emissions, end-of-life treatment, and packaging materials beyond basic protective packaging are excluded from the assessment boundary
• Significant data gaps exist around specific component supplier practices and the wide variation in tablet specifications across manufacturers and price segments