T21-A230X – fast, low-capacitance surge arrester

The T21-A230X surge arrester is a 230V, 3-electrode gas discharge tube designed to clamp high-energy transients before they reach sensitive circuits. It offers very fast response, up to 20kA nominal impulse discharge current (8/20µs), and stable performance over its service life. With capacitance below 1.5pF and insulation resistance above 10GΩ, T21-A230X suits high-frequency line, station, and base-station protection where low loading is critical. Through-hole mounting and standard cylindrical construction simplify layout in industrial and telecom hardware. Choose T21-A230X from Florida Circuit to keep your protection stages robust, repeatable, and ready for the field.