Found 6 alternatives for SM15 by NextGen Components. Tvs Diodes — SOT-23.
TVS DIODE 5VWM 9.8VC SOT23
TVS DIODE 24VWM 43VC SOT23
TVS DIODE 3.3VWM 10VC SOT23
TVS DIODE 12V/7V, 20V/12V SOT23
TVS DIODE 5VWM 10VC SOT23
TVS DIODE 15VWM 24VC SOT23