Last Buy — what it means for your BOM
The 1.5KE130CA-E3/51: Vishay has placed the 1.5KE130CA-/51 into Last Buy status. This is not an obsolete/EOL part yet, but the manufacturer has signaled that the final production window is open. If this TVS is on your BOM, the procurement decision is time-sensitive: secure lifetime-buy quantities or qualify an alternative before the order cutoff passes.
Protection ratings — what 1500 W and 179 V clamping mean on the line
The 111 V reverse standoff means it sits across a 100 V or 110 V DC bus without leakage — it only starts conducting when the transient pushes past the 124 V minimum breakdown threshold. Bidirectional construction means a single device protects both positive and negative surges, so there is no polarity to get wrong during assembly.
Package and temperature — through-hole fit for industrial environments
Housed in a DO-201AA / DO-27 axial-lead package, the 1.5KE130CA-/51 is a through-hole part suited for wave-solder or hand-solder assembly. Bulk packaging means it ships loose in a bag or tube — not taped and reeled, so factor that into your pick-and-place planning if you are running high-volume automated insertion.