What the 1500W peak pulse rating means for your protection design
The 1.5KE350A_R2_00001: At that waveform, the diode clamps a 3.2A peak pulse current to 482V maximum. The 300V reverse standoff voltage is the DC operating level below which the diode is effectively an open circuit; the 332V minimum breakdown voltage is where avalanche conduction begins. Between 300V and 332V the part is in the linear region, so the protected rail must stay below 300V steady-state.
Package and mounting — DO-201AE axial through-hole
The DO-201AE axial package is a through-hole form factor with a 0.052-inch (1.32 mm) lead diameter typical. It requires a 0.040-inch (1.02 mm) hole in the PCB and hand-solder or wave-solder assembly — no reflow profile.
Lifecycle reality — obsolete, sourced through surplus channels
Panjat International Inc. lists this part as Obsolete.