What the 1.5 kW rating means in a 300 V rail
The 1.5KE350CA-E3/51: The 300 V reverse standoff voltage is the maximum continuous DC voltage the part blocks without conducting; the 333 V minimum breakdown voltage is where avalanche conduction starts.
Obsolete — sourcing through independent channels
Vishay has marked the 1.5KE350CA-/51 as obsolete. No official successor order code is recorded in the lifecycle documentation. The part is no longer available through Vishay's franchised distribution channel for new production orders. Sourcing for this order code runs through independent surplus and excess inventory channels. Availability is lot-specific and confirmed at RFQ — the part carries no manufacturer warranty from the original factory. Buyers should verify date code, quantity, and traceability against their BOM line before committing.
Package and mounting — axial leaded DO-201AA
The through-hole package is DO-201AA, also known as DO-27, axial leaded. The 1.5KE body is the standard Vishay outline for this power class. Lead spacing and body diameter match the common 1.5KE footprint used across the industry — the PCB hole pattern and lead bend radius are the same as any 1.5KE-series bidirectional TVS in this package. Mounting is through-hole with axial leads; the part is supplied in bulk. No MSL rating applies to leaded glass-passivated devices — no bake-out or moisture sensitivity handling is required before soldering.