1500 W axial TVS — what the ratings mean for the board
The 1.5KE160A-E3/54: The 136 V standoff means this part sits across a 120 VAC or 130 VDC rail without conducting in normal operation — it only starts to avalanche at 152 V, so it stays invisible to the circuit until a transient pushes the line above that threshold. The 219 V clamp voltage tells you the worst-case voltage the protected load sees during a 6.8 A surge, which is the figure to check against the downstream device's absolute maximum rating.
Axial package and thermal reach
DO-201AA axial — the leads are thick enough to handle the 1500 W pulse without fusing, and the through-hole mounting means the body heat-sinks into the PCB traces and ambient air. No power line protection rating (says 'No'), so this is a signal- or DC-rail clamp, not a mains-side suppressor. The 1.5KE series is a standard footprint — the axial leads bend to fit existing through-hole pads, and the body orientation is polarity-marked by the cathode band.
Active production — sourcing posture
Listed as Active — the part remains in Vishay's current production portfolio.