Found 3 alternatives for D18V0S1U3LP20-7 by Diodes Incorporated. Tvs Diodes — 3-UDFN Exposed Pad.
TVS DIODE 20VWM 27.5VC 3QFN
TVS DIODE 22VWM 29.5VC 3QFN
TVS DIODE 22VWM 35.6VC 3DFN