The SMD1206 series is a miniature mounted gas discharge tube designed for board-level surge protection of communication ports and data lines. The series provides 90V to 470V DC spark discharge voltage with a tolerance of ±30%, and its 1kV/μs impulse spark overvoltage is ≤750V to ≤1050V, which is suitable for low-voltage signal protection scenarios.
The device has an extremely low capacitance of 0.3pF, which effectively avoids signal attenuation of high-speed data lines (such as ADSL/VDSL) while maintaining an insulation resistance of ≥1000 MΩ. The core surge capability includes 0.5kA pulse discharge current under 8/20μs waveform and 4kV protection of 10/700μs combination wave.
Compliant with ITU-T K.12 standard, it provides compact overvoltage protection for communication interfaces. It is mainly used for signal port protection of main distribution frame modules, line test equipment, modems and data communication equipment. The miniaturized design is compatible with high-density PCB layout, and the optional short-circuit mechanism enhances system reliability, meeting the strict protection requirements of telecommunications equipment for space-sensitive scenarios.
The SMD1206 series adopts the 3216 (1206) standard surface mount package.