TSMC and SEMI Release Chinese Version of Green Packaging Interconnect Guide for Sub-7nm Chips

On May 17, 2026, Taiwan Semiconductor Manufacturing Company (TSMC) and the Semiconductor Equipment and Materials International (SEMI) jointly released the Chinese-language version of the Green Packaging Interconnect Technology Guide for 7nm and Below Logic & Memory ICs. This marks the first standardized framework in China’s semiconductor supply chain to define carbon footprint accounting boundaries and ESG disclosure templates for 12 advanced interconnect processes—including Cu-Co hybrid routing, low-temperature nanosilver sintering, and lead-free high-thermal-conductivity interface materials. Its adoption into the customs-certified AEO (Authorized Economic Operator) green supply chain evaluation reference directory directly links compliance with accelerated customs clearance for high-end logic chip exports.

Event Overview

On May 17, 2026, TSMC and SEMI simultaneously published the Chinese edition of the Green Packaging Interconnect Technology Guide for 7nm and Below Logic & Memory ICs. The guide systematically specifies carbon footprint calculation boundaries and ESG disclosure templates for 12 interconnect-related manufacturing processes. It has been officially included in the reference directory for China Customs’ AEO Advanced Certification green supply chain assessments, thereby affecting customs facilitation levels for exported high-end logic integrated circuits.

Industries Affected

Direct Export-Oriented Semiconductor Companies: Firms exporting advanced logic chips (e.g., AI accelerators, server SoCs) from mainland China or through bonded zones must now align packaging interconnect process data with the guide’s reporting structure to qualify for AEO green-tier benefits—such as priority inspection, reduced document verification, and faster release cycles. Non-compliance may trigger enhanced scrutiny during customs valuation or origin verification.

Raw Material Suppliers: Providers of cobalt-based plating solutions, nano-silver pastes, and lead-free thermal interface materials face new traceability and lifecycle assessment (LCA) documentation requirements. The guide’s defined system boundaries—particularly its inclusion of upstream electricity mix, precursor chemical synthesis, and transport logistics—require suppliers to upgrade data collection protocols and disclose granular environmental metrics previously treated as proprietary.

OSAT (Outsourced Semiconductor Assembly and Test) Providers: Contract assembly and test facilities performing advanced packaging (e.g., 2.5D/3D integration, fan-out wafer-level packaging) must validate their copper-cobalt redistribution layer (RDL) processes and nanosilver die-attach steps against the guide’s carbon accounting rules. Process qualification reports now require third-party LCA verification aligned with the guide’s functional unit definition (per mm² of interconnect area).

Supply Chain Service Providers: Logistics integrators, customs brokers, and ESG verification bodies supporting semiconductor exporters must integrate the guide’s disclosure templates into pre-clearance audits and sustainability due diligence workflows. Notably, the guide’s linkage to AEO certification means service providers must verify not only end-product compliance but also sub-tier supplier alignment—especially for interconnect-specific material declarations.

Key Focus Areas and Recommended Actions

Align internal carbon accounting with the guide’s defined system boundaries

Companies should map current Scope 1–3 emissions reporting against the guide’s prescribed life-cycle stages—particularly the inclusion of substrate fabrication energy, plating bath chemistry renewal rates, and sintering furnace power profiles. Internal LCA tools may require recalibration to match the guide’s functional unit (e.g., per interconnect via count, not per package unit).

Update technical documentation for AEO green-tier applications

Applicants for China Customs AEO Advanced Certification must now submit packaging interconnect process descriptions using the guide’s standardized terminology and template fields—including material composition ratios, sintering temperature/time windows, and thermal interface material thermal resistance vs. carbon intensity trade-off data.

Engage Tier-2 material suppliers on data transparency

Since the guide mandates upstream input data (e.g., cobalt ore sourcing energy intensity, silver nanoparticle synthesis route emissions), OSATs and IDMs must formalize data-sharing agreements with material vendors—potentially requiring contractual amendments or joint LCA studies to meet disclosure thresholds.

Editorial Perspective / Industry Observation

Observably, this initiative signals a shift from voluntary ESG benchmarking toward regulatory-grade technical standardization in semiconductor advanced packaging. Unlike broader climate pledges, the guide embeds environmental criteria directly into process engineering specifications—effectively turning carbon metrics into a design constraint. Analysis shows that its adoption may accelerate consolidation among mid-tier OSATs lacking LCA infrastructure, while incentivizing vertical integration among leading foundries seeking full-stack control over interconnect sustainability. Current more critical than compliance timing is the calibration gap: many existing LCA models do not resolve at the micron-scale interconnect level mandated here—meaning implementation will depend heavily on tool vendor upgrades and cross-industry data pooling.

Conclusion

This guideline does not merely add reporting overhead—it redefines technical interoperability in green supply chains. Its real significance lies in establishing the first internationally harmonized, process-specific carbon accounting framework for sub-7nm interconnects. From an industry perspective, it sets a precedent where environmental performance becomes inseparable from electrical and thermal performance in advanced packaging qualification. A rational conclusion is that early adopters will gain not only customs advantages but also stronger leverage in multi-tier sustainability negotiations—making this less a compliance exercise and more a strategic capability enabler.

Source Attribution

Official release: TSMC Press Office and SEMI Global Communications, May 17, 2026.
Regulatory reference: China General Administration of Customs Notice No. [2026]XX on AEO Green Supply Chain Evaluation Criteria (effective June 1, 2026).
Note: Implementation guidance documents from the China Electronics Standardization Institute (CESI) and SEMI’s global LCA Working Group remain pending; these are under active observation for sector-specific interpretation and enforcement timelines.