The 1.5KE120CHE3/54: Its 97.2 V reverse standoff voltage and 108 V minimum breakdown voltage make it suited for clamping transients on 48 V nominal or higher automotive and industrial DC rails.
Clamping and current ratings for surge protection design
This sets the upper bound on the voltage the downstream circuitry sees during a surge event — a key parameter for selecting the TVS in a 48 V bus or a 12 V system with high-energy transients.
Obsolete — sourcing through independent distribution
Vishay has marked the 1.5KE120CHE3/54 as obsolete. No official successor order code is recorded from the manufacturer for this specific bidirectional automotive-grade variant.