针对三防材料在微波电路中多余物防控方面的可行性、可靠性问题,提出在产品表面用真空化学气相沉积法镀Parylene C薄膜,结果表明该膜层可有效控制直径
The coating material feasibility and reliability in the prevention and control of remnant material in microwave circuits was studied. The vacuum chemical vapor deposition method to deposit Parylene C film on the product surface was proposed. The experimental results show that the film can effectively control the remnant material with a diameter of less than 1 mm, and improve the pass rate of particle impact noise detection test. In the meantime, the film has good compatibility with assembly processes such as welding, gluing, interconnecting, and cleaning and meets the reliability requirements. The film has high insulation strength and excellent insulation protection for microwave circuit. Consequently, the arylene C film has application feasibility and potential value in microwave products.