Active production — confirmed lifecycle
The 1.5SMC150A TR13 PBFREE: For a BOM manager auditing lifecycle risk, an Active status on a standard TVS diode like this means the line can be committed without a near-term requalification trigger. No successor or replacement part is listed because none is needed at this point.
Protection window — 128V standoff, 207V clamp
The 128V standoff makes this part a fit for 100V to 120V DC rails — common in telecom rectifiers, 48V-to-120V converters, and industrial power supplies where the nominal bus sits below 128V and the TVS must not conduct during normal operation but must clamp fast on a transient. The 207V clamp at 7.2A means the downstream circuitry must survive up to that voltage for the surge duration.
Package and board-fit — DO-214AB SMC
Housed in the DO-214AB (SMC) surface-mount package, a standard footprint shared across the 1.5SMC family. The SMC body handles the 1500W dissipation through the copper pad area on the PCB — the thermal vias under the cathode tab set the junction-to-ambient thermal resistance. Tape & Reel packaging supports automated assembly with standard pick-and-place nozzles. Operating junction temperature spans -65°C to 150°C, a wide industrial/military range. No derating is required at the low end; at 150°C the junction is at its absolute maximum and the leakage current increases per the Zener characteristic. The part is not rated for power line protection — it is intended for DC signal and power rail transient suppression, not AC mains clamping.