1500W bidirectional Zener TVS in DO-201AA axial
The 1.5KE150C-E3/54: It clamps transients at 215V maximum with a peak pulse current of 7A, protecting downstream circuitry from surges up to that energy level.
Through-hole package and temperature envelope
The wide thermal margin means derating is driven by the ambient temperature and surge duty cycle, not the package limits.
Obsolete — sourcing through independent channels
Vishay has marked the 1.5KE150C-/54 as obsolete. The part is available through independent surplus and excess inventory channels, with quantities and pricing confirmed at RFQ against the BOM line. For new designs, a functionally equivalent bidirectional 1500W TVS in a similar DO-201 package with a 121V standoff should be evaluated. The existing BOM position can be supported from available surplus stock while a replacement is qualified.