塑封硅台面整流二极管具有反压高、体积小、外形美观、使用方便等特点,得到了广泛地应用.已成了广播、电视、无线电通讯及国防尖端科学技术不可缺少的基础器件.但该器件一直是采用六十年代的手工组装(焊接)工艺,该工艺的致命弱点是:用银丝作内引线,成本高;工艺复杂,生产效率低,且有污染;器件的热阻大、压降大.性能差;工序多、成品率低. Plastic silicon mesa rectifier diode with high back pressure, small size, beautiful appearance, easy to use features, has been widely used. Has become the radio, television, radio communications and defense cutting-edge science and technology indispensable basis for the device, but the device Has been the use of the sixties of the manual assembly (welding) process, the process of the fatal weakness are: silver wire as the inner lead, high cost; process complexity, low productivity and pollution; device thermal resistance, pressure drop Large. Poor performance; more processes, low yield.