Testing Methods and standards for Flexible Printed Circuit Boards——Electromagnetic Heating Roller
作者：管理员 时间：2020-06-04 09:12 来源：未知
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The test range includes flexible circuit single - sided, double - sided and multi - layer board. The flexible circuit board mentioned in this standard refers to the single, double and multilayer flexible copper foil substrate with polyimide (PI) or polyester (PET) as the substrate, including the flexible copper foil substrate with glue or without glue. The purpose of the test is to establish a general criterion for judging the appearance quality of the flexible circuit board, which can be used as the criterion for judging the appearance quality of the soft board between tiapai and suppliers. Test methods the main test methods are visual inspection, magnifying glass and ruler gauge, and other applicable test instruments or equipment may be used when necessary.
Basic test standards:
1. Appearance of substrate membrane surface;
2. Appearance of covering layer;
3. Deviation of connecting plate and covering layer;
4. Flow infiltration of binder and coating;
5. The discoloration of the conductor under the covering layer must still meet the requirements of voltage resistance, bending resistance, bending resistance and welding resistance after the humidity test of 40℃, 90% and 96 hours;
6. Leakage of coating layer;
7. Poor combination of electroplating.
Note: flexible circuit board (hereinafter referred to as FPC)
FPC conductor part, need to pass surface coating (rust) treatment, such as: plating, gold, OSP, tin, etc.. The storage environment should avoid corrosive gases, and the temperature should be controlled at 20 /-5 ° c and the relative humidity should be controlled below 70%R.H. Under the above storage conditions, the effective storage period of the product is 6 months after delivery.
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