1500 W peak pulse — clamping a 33.3 V rail
The 1.5SMC39AHM3_A/H: Its 33.3 V reverse standoff voltage protects a nominal 33 V or 36 V supply rail — the device remains transparent below that threshold and clamps transients at 53.9 V maximum, passing 27.8 A peak pulse current.
DO-214AB SMC footprint — surface-mount board integration
The package footprint is shared across the 1.5SMC family, so a single land pattern serves the full voltage range from 6.8 V to 200 V. No power line protection — this is a unidirectional TVS for DC rails, not for AC mains or bidirectional signal lines. The single-channel Zener structure clamps positive transients above breakdown; reverse polarity is blocked by the diode's own forward characteristic.