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GB/T 46378-2025Spherical alumina powder for integrated circuit packaging (English PDF)

集成电路封装用球形氧化铝微粉

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

February 1, 2026

Scope

GB/T 46378-2025 is the English-translated version of 集成电路封装用球形氧化铝微粉.

GB/T 46378-2025 is the Chinese standard "Spherical alumina powder for integrated circuit packaging". Its scope clause reads: This document specifies the classification and marking, requirements, inspection rules, and labeling, packaging, and transportation of spherical alumina micropowder for integrated circuit packaging.

The corresponding experimental methods are described for storage and handling. This document applies to the preparation of aggregates using flame melting, high-temperature melt spraying, high-temperature oxidation, plasma methods, or liquid-phase synthesis.

Spherical alumina micro powder for circuit packaging. Its clauses include terms and definitions.

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Document preview — GB/T 46378-2025

National Standard of the People's Republic of China

ICS: 31.030
Classification: L 90

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Classification and Labelling
4.1 Product Category
4.2 Mark
5 Requirements
5.1 Product Appearance
5.2 Cutting Point
5.3 Main physical and chemical properties
6.Test Methods
6.1 Test Environment
6.2 Visual Inspection
6.3 Particle content and maximum particle size above the cut point
6.4 Median particle size
6.5 Radioactive element content (U, Th)
6.6 Specific surface area
6.7 Mean sphericity
6.8 Moisture content
6.9 True Density
6.10 Thermal conductivity
6.11 alpha-phase content
6.12 Extract conductivity
6.13 Extract pH
6.14 Al2O3 content
6.15 Fe2O3 content
6.16 Na2O content
6.17 Na content in the extract
6.18 Anion content in the extract (Cl-, NO3-, SO42-, PO43-)
6.19 Magnetic foreign object
7 Inspection Rules
7.1 Inspection Classification
7.2 Batching
7.3 Inspection Item
7.4 Judgment Rule
8.Marking, Packaging, Transport and Storage 10.
8.1 Mark
8.2 Packaging
8.3 Transportation
8.4 Storage
References

1 Scope

This document specifies the classification and marking, requirements, inspection rules, and labeling, packaging, and transportation of spherical alumina micropowder for integrated circuit packaging.

The corresponding experimental methods are described for storage and handling.

This document applies to the preparation of aggregates using flame melting, high-temperature melt spraying, high-temperature oxidation, plasma methods, or liquid-phase synthesis.

Spherical alumina micro powder for circuit packaging.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 191 Packaging and Storage Graphic Symbols

GB/T 6284 General Method for Determination of Moisture in Chemical Products - Loss on Drying Method

GB/T 6609.4 Chemical Analysis Methods and Physical Property Determination Methods for Alumina - Determination of Ferric Oxide by o-phenanthroline Spectrophotometric Method content

GB/T 6609.5 Chemical Analysis Methods and Physical Property Determination Methods for Alumina - Determination of Sodium Oxide Content

GB/T 6609.32 Chemical analysis methods and physical property determination methods for alumina - Part 32.Determination of alpha-alumina content

X-ray diffraction

GB/T 6609.34 Chemical analysis methods and physical property determination methods for alumina - Part 34.Calculation of aluminum oxide content method

GB/T 6609.35 Chemical analysis methods and physical property determination methods for alumina - Part 35.Determination of specific surface area and nitrogen adsorption

Supplementary Law

GB/T 6678 General Rules for Sampling of Chemical Products

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB/T 6908 Analytical Methods for Boiler Water and Cooling Water - Determination of Conductivity

GB/T 9724 General Rules for the Determination of pH Value of Chemical Reagents

GB/T 11446.7 Ion Chromatographic Determination of Trace Anions in Electronic Grade Water

GB/T 14640 Determination of potassium and sodium content in industrial circulating cooling water and boiler water

GB/T 19077 Particle size analysis by laser diffraction

GB/T 29313 Test methods for thermal conductivity of electrical insulating materials

GB/T 32661 Spherical Silica Micropowder

GB/T 37406 Method for Determining the Sphericity of Spherical Silica Micropowder for Electronic Packaging - Dynamic Photoelectric Projection Method for Particles

GB/T 39486 General Rules for Inductively Coupled Plasma Mass Spectrometry Analysis of Chemical Reagents

GB/T 40401 Measurement of skeleton density by gas volume displacement method

3 Terms and Definitions

The following terms and definitions apply to this document. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46378

Edition	Title	Revision	Status
GB/T 46378-2025	Spherical alumina powder for integrated circuit packaging	current edition	Current

This page sells the current edition, GB/T 46378-2025. Earlier editions are listed for reference only.

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