Found 3 alternatives for CM1248-08DE by onsemi. Tvs Diodes — 8-UFDFN Exposed Pad.
TVS DIODE 8.2VWM 9.64VC 8-UDFN
TVS DIODE 3.3VWM 8VC SLP2116P8
TVS DIODE 5VWM 12.5VC SLP2116P8