Article mainly introduces the single side ptfe aluminum plate processing technological process and key technology of process control points.

One, foreword

Metal base printed circuit board as the printed circuit board of a category, was invented by the United States in the 1960 s, because of its small possess good heat dissipation, thermal expansion, high dimensional stability and good shielding etc., are widely used in high frequency receiver, power modules, power supply, electronic and telecom products. My unit application the most is the single sided aluminum ptfe board (hereinafter referred to as the aluminum plate).

2, the aluminum base plate processing difficulty

Due to the aluminum plate in the special requirements of electrical performance, metal double sex characteristics of Al and Al substrate thickness thicker (3-10 mm) are caused by the following processing difficulty.

2.1 line of high precision, such as: engineering line width compensation value should rely on the accumulation of experience judgment.

After 2.2 etching, etching line width must conform to the requirements of the drawings, to achieve without the residual copper and a smooth line.

2.3 machining: request processed aluminum plate without stratification, no burr hole, and shape required edges.

2.4 aluminum panel is not allowed to scratch, black, color, and so on and so forth.