中文摘要：

为了研究传输线长度对静电放电防护器件性能测试结果的影响，建立了静电放电模型和传输线脉冲模型两种试验系统，对某限压型防护器件进行了快沿电磁脉冲注入试验，并进行了理论分析。结果表明：传输线长度对静电放电防护器件性能测试结果具有极大影响，选用不当会导致错误结论；在对静电放电防护器件性能测试时，应优先采用传输线脉冲测试法；当采用静电放电脉冲测试法时，其传输线长度不应小于8m。

英文摘要：

To study the transient response of electrostatic discharge（ESD） protection device to the EMP with fast rise time, human-metal model （HMM） and transmission line pulse （TLP） current waveforms are widely used for ESD protection devices testing. In this paper, two testing systems were developed. One is an HMM tester, basing on IEC61000-4-2. The other can generate TLP waveform by transmission line charging and discharging. A type of ESD protection device was tested. Transient response waveforms, clamping voltage, clamping time, overshoot voltage were obtained, and the influence of transmission line length on the test results was studied and analyzed theoretically. The experiment results show that： The length of TL has a great impact on the performance testing of an ESD protection device, improper selection can lead to a wrong conclusion; When the ESD protection device is under test, TLP testing is preferred; The length of TL should be less than 8 meters when the ESD pulse testing is used.