1500 W peak pulse — what it means for rail protection
The 1.5SMC36A-E3/9AT: That rating defines the surge energy it can clamp without failing — a 30.1 A peak pulse current (Ipp) at the 49.9 V clamping voltage. The DO-214AB (SMC) surface-mount package shares a common footprint with other 1.5SMC family parts, simplifying BOM swaps during layout.
Active lifecycle — no obsolescence risk for new builds
The base product number 1.5SMC36 covers the full family — the -/9AT suffix indicates the tape-and-reel packaging variant.
Unidirectional clamping — signal and DC rail fit
With Power Line Protection marked No, this device is intended for DC signal lines, low-voltage power rails, or data interfaces — not for AC mains or bidirectional applications. The single unidirectional channel means it protects one polarity; for bipolar or AC-coupled lines, two devices back-to-back or a bidirectional TVS would be required. Above that, the 34.2 V minimum breakdown triggers avalanche conduction, clamping transients to 49.9 V maximum. This window suits 24 VDC rails with 30% tolerance or 28 V aerospace buses.