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GB/T 4725-2022 English PDF

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Q: Should I purchase the latest version GB/T 4725-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4725-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 4725-2022: Epoxide woven glass fabric copper-clad laminated sheets for printed circuits
Status: Valid

GB/T 4725: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4725-2022	199	Add to Cart	3 days	Epoxide woven glass fabric copper-clad laminated sheets for printed circuits	Valid
GB/T 4725-1992	239	Add to Cart	2 days	Epoxide woven glass fabric copper-clad laminated sheets for printed circuits	Obsolete

Similar standards

GB/T 12631 GB/T 4721 GB/T 4722

Basic data

Standard ID: GB/T 4725-2022 (GB/T4725-2022)
Description (Translated English): Epoxide woven glass fabric copper-clad laminated sheets for printed circuits
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L30
Word Count Estimation: 10,178
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 4725-2022: Epoxide woven glass fabric copper-clad laminated sheets for printed circuits

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Epoxide woven glass fabric copper-clad laminated sheets for printed circuits ICS 31.180 CCSL30 National Standards of People's Republic of China Replacing GB/T 4725-1992, GB/T 12629-1990 Copper clad epoxy fiberglass cloth laminate for printed circuit Published on 2022-03-09 2022-10-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 1 5 Product Category 1 6 Material 2 6.1 Copper foil 2 6.2 E glass fiber cloth 2 6.3 Resin system 2 7 Technical requirements 2 7.1 Appearance 2 7.2 Size 2 7.3 Performance requirements 2 8 Test method 7 9 Quality Assurance7 10 Packaging, marking, transport and storage7 11 Ordering documents 7

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document replaces GB/T 4725-1992 "Copper Clad Epoxy Glass Cloth Laminates for Printed Circuits" and GB/T 12629-1990 "Limited Thin copper-clad epoxy glass cloth laminate with constant flammability (for the manufacture of multi-layer printed boards)". This document is mainly based on GB/T 4725-1992. Combined with the content of GB/T 12629-1990.Compared with GB/T 4725-1992, except for structural adjustment and editorial changes, the main technical The changes are as follows. a) Changed product classification (see Chapter 5, 3.1 of GB/T 4725-1992); b) The description of the structure is deleted (see 3.2 of GB/T 4725-1992); c) Deleted the description of insulating base material (see 3.2.1 of GB/T 4725-1992); d) Changed the requirements for copper foil (see 6.1, 3.2.2 of GB/T 4725-1992); e) Added the requirements for E glass fiber cloth and resin system (see 6.2 and 6.3); f) Changed the requirements for appearance and size (see 7.1, 7.2, 4.2.1~4.2.4 of GB/T 4725-1992); g) Changed the performance requirements (see 7.3, 4.1, 4.2.5 of GB/T 4725-1992); h) Appearance and dimension test methods are added (see Chapter 8); i) Changed the performance test method (see 7.3, Chapter 8, 4.1, 4.2.5 of GB/T 4725-1992); j) Change the quality assurance (see Chapter 9, Chapter 5 of GB/T 4725-1992); k) Changed the technical requirements for packaging, marking, transportation and storage (see Chapter 10, Chapter 3.3 and Chapter 6 of GB/T 4725-1992); l) Added the provisions for ordering documents (see Chapter 11). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This document is under the jurisdiction of the National Printed Circuit Standardization Technical Committee (SAC/TC47). This document is drafted by. Guangdong Shengyi Technology Co., Ltd., National Electronic Circuit Substrate Engineering Technology Research Center, Suzhou Shengyi Science and Technology Co., Ltd. Technology Co., Ltd., Shaanxi Shengyi Technology Co., Ltd. The main drafters of this document. Su Xiaosheng, Yang Zhongqiang, Cai Qiaoer, Yang Yan, Liu Shenxing, Wang Jinrui, Luo Penghui, Wang Airong. The previous versions of this document and its superseded documents are as follows. --- First published in 1984 as GB/T 4725-1984, first revised in.1992; ---First published in.1990 as GB/T 12629-1990; --- This is the second revision, incorporating the content of GB/T 12629. Copper clad epoxy fiberglass cloth laminate for printed circuit

1 Scope

This document specifies the product classification, materials and technical requirements of copper clad epoxy fiberglass cloth laminates for printed circuits (hereinafter referred to as "copper clad laminates"). Requirements, test methods, quality assurance, packaging, marking, transportation, storage and ordering documents. This document is applicable to the design, manufacture, shipment monitoring and downstream use of single-sided or double-sided copper clad laminates with a thickness of 0.05mm~6.4mm. Purchase inspection of households, etc.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 4721-2021 General Rules for Rigid Copper Clad Laminates for Printed Circuits GB/T 4722-2017 Test method for rigid copper-clad laminates for printed circuits GB/T 5230 Electrolytic copper foil for printed boards GB/T 18373 E glass fiber cloth for printed boards

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Abbreviations

The following abbreviations apply to this document.

5 Product Category

The classification of copper clad laminates shall comply with the provisions of Table 1. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 4725-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 4725-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 4725-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 4725-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 4725-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4725-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.