1.8 kV blocking, 1500 A RMS — a high-current thyristor for industrial power
The Infineon T830N14TOFXPSA1 is a single SCR thyristor in a DO-200AB, B-PUK package rated for chassis-mount installation. Its 1.8 kV off-state voltage and 1500 A RMS on-state current place it squarely in high-power rectifier and AC-switch applications — think motor-drive DC links, large UPS systems, and industrial welding supplies where a single device must handle hundreds of amps continuously and survive fault surges without failing short.
844 A average, 14500 A surge — sizing the thermal and protection budget
The average on-state current (It(AV)) is 844 A, but the RMS rating of 1500 A tells the real conduction story for phase-angle-controlled waveforms where the current isn't a pure DC. The non-repetitive surge capability of 14500 A at 50 Hz gives the fuse-coordination engineer a hard number for selecting the semiconductor fuse that clears before the thyristor loses blocking. Gate trigger requirements are 250 mA and 1.5 V max, so a standard pulse transformer or optocoupler driver can fire it without a separate boost stage.
The hold current (Ih) of 300 mA max means the device stays latched once triggered even with light load current — a consideration for low-load conditions where the load current might dip below the hold threshold during the AC zero-cross.
For a high-power thyristor that often has a multi-year design-in cycle, this means the BOM line is safe for both prototype builds and production ramps.