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GB/T 18334-2025Specification for flexible multilayer printed boards (English PDF)

挠性多层印制板规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 18334-2025 is the English-translated version of 挠性多层印制板规范.

GB/T 18334-2025 is the Chinese standard "Specification for flexible multilayer printed boards". Its scope clause reads: This document specifies the requirements, quality assurance, and delivery preparation for flexible multilayer printed circuit boards, and describes the corresponding inspection methods.

This document applies to the design, production, and inspection of flexible multilayer printed circuit boards. Its clauses include terms and definitions.

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Document preview — GB/T 18334-2025

National Standard of the People's Republic of China

ICS: 31.180
Classification: L 30
Replacing: GB/T 18334-2001

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

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Application Level
5 Requirements
5.1 General Rules
5.2 File Priority Order
5.3 Materials
5.4 Design
5.5 Appearance and Dimensions
5.6 Structural Integrity
5.7 Physical Properties
5.8 Chemical Properties
5.9 Electrical performance
5.10 Environmental Performance
5.11 Other Requirements
6.Quality Assurance Provisions
6.1 General Rule
6.2 Inspection Conditions
6.3 Capability Approval
6.4 Approval of the appraisal
6.5 Quality Consistency Inspection
7.Delivery preparation
7.1 Packaging Requirements
7.2 Transportation
7.3 Storage

1 Scope

This document specifies the requirements, quality assurance, and delivery preparation for flexible multilayer printed circuit boards, and describes the corresponding inspection methods.

This document applies to the design, production, and inspection of flexible multilayer printed circuit boards.

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 2036 Printed Circuit Terminology

GB/T 2423.4 Environmental testing of electrical and electronic products - Part 2.Test methods - Test Db. Alternating damp heat (12h) cycle)

GB/T 2423.22 Environmental testing - Part 2.Test methods - Test N. Temperature change

GB/T 2423.58 Environmental testing of electrical and electronic products - Part 2-80.Test methods - Test Fi. Vibration mixed mode

GB/T 2523 Methods for measuring surface roughness, peak count and waviness of cold-rolled sheet and strip metal

GB/T 4588.3 Design and use of printed circuit boards

GB/T 4677-2002 Test Methods for Printed Circuit Boards

GB/T 4725 Copper-clad epoxy fiberglass cloth laminate for printed circuit boards

GB/T 5230 Electrolytic Copper Foil for Printed Circuit Boards

GB/T 13555 Polyimide film copper-clad laminates for flexible printed circuits

GB/T 13556 Copper-clad Polyester Film for Flexible Printed Circuits

GB/T 13557-2017 Test methods for flexible copper-clad foil materials for printed circuits

GB/T 14708 Coated polyester film for flexible printed circuits

GB/T 14709 Coated polyimide films for flexible printed circuits

GB/T 16261-2017 General Specification for Printed Circuit Boards

GB/T 20422 Lead-free solder

GB/T 33015 General Rules for Bonding Sheets for Multilayer Printed Circuit Boards

GB/T 35575 General Technical Requirements for Electromagnetic Shielding Films

SJ/T 10309 Solder resist for printed circuit boards

SJ20810 Printed Circuit Board Dimensions and Tolerances

SJ20828 Test patterns and layout diagrams for qualification assessment

YS/T 421 Aluminum plates, strips, and foils for indirect typesetting printing plates

YS/T 1039 Rolled Copper Foil for Flexible Printed Circuit Boards

3 Terms and Definitions

The terms and definitions defined in GB/T 2036, as well as the following terms and definitions, apply to this document.

GB/T 12631 | GB/T 19405.4 | GB/T 19405.3 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 36 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

GB/T 43799-2024Sectional specification for high density interconnect printed boards

Editions of GB/T 18334

Edition	Title	Revision	Status
GB/T 18334-2025	Specification for flexible multilayer printed boards	current edition	Current
GB/T 18334-2001	Specification for flexible multilayer printed boards with through connections	previous edition	In force

This page sells the current edition, GB/T 18334-2025. Earlier editions are listed for reference only.

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