Part Pin to Pin Compatibility Repetitive Peak Off-State Voltages, V drm, Vrrm, V RMS On-State Current, It (RMS) I2t, for Fusing, I2t, A2c Off-State Leakage Current, Id,Ir,mA Holding Current, Iн, mA Latching Current, IL, mA Gate Trigger Current, Igt, mA Peak Gate Current, Igm, A Package PDF
KU251А МСR100-8 600 1 0.415 ≤0.05 ≤5 ≤0.2 ≤1.0 TO-92
KU251Б КУ251Б 800 1 0.415 ≤0.05 ≤5 ≤0.2 ≤1.0

OD-92

KU613А ВТА208-600В 600 8 21 ≤0.5 ≤60 ≤50 2 TO-220AB
KU613Б ВТА208-800В 800 8 21 ≤0.5 ≤60 ≤50 2 TO-220