Last-buy sourcing for the 1.5KE130A-E3/51
Vishay has placed the 1.5KE130A-/51 TransZorb Zener TVS diode into Last Buy status — the manufacturer's last-time-buy window is closing, and remaining stock is finite. This part protects a 111V nominal rail with a 124V minimum breakdown and clamps transients to 179V at 8.4A peak pulse current (10/1000µs waveform), absorbing 1500W of peak pulse power.
What the 1500W rating means for your rail
The 1500W peak pulse power is rated for a 10/1000µs exponential waveform — the diode absorbs that energy without failing, but the actual power the junction sees depends on the pulse duration and duty cycle in your application. At 179V clamping, the 8.4A peak pulse current means the diode conducts hard enough to shunt the transient away from downstream circuitry on a 111V bus — the 124V breakdown gives a 13V margin above the standoff before conduction starts.
Through-hole axial package and temperature range
The DO-201AA (DO-27) axial leaded package mounts through-hole — the leads carry the transient current into the board, and the body dissipates heat into the surrounding air or potting compound.