在电装车间发生元器件损坏事件,大部分都是因为过电应力损伤、电流过大烧毁、大电压击穿,这些失效模式是典型的浪涌损坏.在此分析了浪涌产生的机理,早期的浪涌吸收器响应时间一般为μs级,不能很好地抑制某些高速浪涌.根据TVS管特性,把它加入到电子产品中可有效抑制高速浪涌的产生,在某军用电子产品中具体做了实验,从脉冲产生的数据表中,可明显看到增加TVS管后,抑制了浪涌产生,保证了产品的测试精度,减少了元器件的损伤,提高了产品的抗干扰能力.%Component damage events occurring in the electronic assembly workshop are mostly caused by electrical stress injury, excessive current burn and high-voltage breakdown. These failures belong to a typical surge damage mode. The mechanism of the surge formation is analyzed. The response time of the early commom surge absorbers are in μs level, which can not suppress the certain high-speed surge very well. TVS due to its characteristics was added into the electronic products to inhibit the rapid surge generation. The experiments were conducted in military electronic products. It is clear to see the surge suppression effect of TVS from the pulse generating data in the table. It ensured the test accuracy of the products, reduced the components injury and improve the anti-jamming capability of products.
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