1 Scope: This standard involves rigid flexible double-sided printed boards with through connections, regardless of their manufacturing method. This standard will serve as the basis for signing contracts between the supply and demand parties. This standard specifies the performance and test methods to be evaluated, and establishes unified requirements for identifying performance and dimensions. The term 'relevant specifications' used in this standard refers to these agreements. This standard does not apply to flat cables. 2. The provisions included in the following standards are incorporated into this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using each standard should explore the possibility of using the latest version of the following standards. IEC and ISO member countries maintain a current list of valid standards. GB/T 2423.34-86 Basic Environmental Testing Procedures for Electrical and Electronic Products - Part 2: Test Z/AD; Temperature/humidity combined cycle test method (idt IEC 68-2-38:1974) IEC 68-2-3; 1985 Basic environmental testing procedures for electrical and electronic products. Part 2: Test Ca: Steady state damp heat IEC 68-2-20:1979 Basic environmental testing procedures for electrical and electronic products. Part 2: Test T: Soldering IEC 194:1988 Printed circuit terms and definitions IEC 321:1970 Design and use guidelines for components installed on printed circuit boards IEC 326-2:1990 Printed circuit boards. Part 2: Test methods IEC 326-3:1991 Printed circuit boards. Part 3: Design and use of printed circuit boards. General principles The following tables specify all important properties and applicable tests cited to verify these properties. It is best to conduct 4 sample tests on the product board. When agreeing to use the attached test plate, the test specimen should be prepared in accordance with 4.2. A of IEC 326-2. The relevant specifications should include all necessary information to clearly and completely determine the printed circuit board, and should comply with the requirements recommended by 1EC 326-2
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China