D28H23.5 metal oxide varistors Gradient: 235V/mm for D28-D42 and 220V/mm for D46-D115The best 4/10µs high current performance worldwideExcellent 8/20µs charge transferring performanceExcellent 2ms performanceVery low ratio of lightning residual voltage and DC U1mAVery low leakage curre