Flexible Circuit Board Testing Standard

2020-05-28 Jing Guan Ying FPC 34

Common FPC flexible circuit board test standards are as follows:

1. Appearance of substrate film surface: The appearance of the substrate film surface where the conductor does not exist allows the defect range to be listed in the table. No other irregularities, creases, wrinkles and attached foreign objects that affect the use are allowed.

2. Appearance of cover layer: Defects of the cover film and the appearance of the cover coating: The allowable range is shown in the figure below, and there are no irregularities, creases, wrinkles and delamination that affect the use. 

柔性线路板测试标准

 

3, the deviation of the connecting plate and the cover layer: As shown in the figure below, the deviation e of the connection plate and the cover layer is allowed to be ± 0.3mm or less when the outer dimension is less than 100mm, and ± 0.3% or less when the outer dimension is 100mm or more.

柔性线路板测试

4. Infiltration of adhesive and covering coating: As shown in the figure below, the degree of bleeding of the adhesive and cover coating f should be less than 0.2mm. But at the connection disc, plus the deviation of the cover layer and the deviation of the punching, the minimum ring width g≥0.05mm must be met.

柔性线路板检测

5. Color change: The conductor under the cover layer is discolored. After the humidity resistance test of 40 ° C, 90% humidity and 96 hours, it must still meet the requirements of voltage resistance, bending resistance, bending resistance and welding resistance.

6. Missing coating of the coating: As shown in the figure below, the leaky coating of the coating layer is tested according to the solderability requirements. The conductor of the leaky coating portion of the coating layer should not be covered with tin.

柔性线路板FPC检测

7. Poor electroplating combination: The plating layer is not allowed to be delaminated, as shown in the figure below, the width W1, length L of the poor bonding of the plating layer, the length L, and the width W of the conductor after processing, and the poor bonding of the plating layer should not damage the reliability of the contact area.

柔性线路板检测

In the production process of flexible circuit board FPC, the test of flexible circuit board is a crucial link. Without the tested flexible circuit board, the quality cannot be guaranteed and the pass rate is low. If the circuit board is the heart of an electronic product, the flexible circuit board is undoubtedly the flexible heart and blood vessel of the electronic product. If no tested flexible circuit boards flow into the market, it will have an important impact on the function of terminal electronic products.


精莞盈FPC简介

     公司自2003年创业以来,始终以创造世界一流产品为奋斗目标,积极推动事业向多元化和全球化发展。目前,我们在全球以光学为核心的影像系统产品....

查看更多

FPC应用领域

联系精莞盈FPC

Copyright(C)2008-2012 Shenzhen Jing Guan Surplus Elec. Co., Ltd.All Rights Reserved.ICP8888888

No.6, xiuhua Road,tangxiayong industrial zone,yanluo street,bao'an district ,Shenzhen,China

Rainbow Lau 13809629365

Powered by MetInfo 5.3.19