Clamping and standoff — what the ratings mean for the rail
The 1.5KE56CHE3/54: Reverse standoff voltage is 45.4 V typical — the rail voltage must stay below this during normal operation to avoid leakage. Breakdown starts at 50.4 V minimum, and the clamping voltage at peak pulse current (18.6 A) is 80.5 V maximum, which defines the voltage the downstream components must survive during a transient.
Obsolete — sourcing through independent channels
Vishay has marked the 1.5KE56CHE3/54 as obsolete. Available through independent distribution against an RFQ — lot traceability and date codes confirmed at quote time. For volume or last-time-buy requirements, submit a request with target quantity and delivery window.
