What the 1500W pulse rating means for your protection design
The 1.5KE110CHE3/73: The reverse standoff voltage is 89.2V, and breakdown occurs between 99V and the clamp ceiling. A 24V nominal rail with a 100V transient sees this part stay off until the surge exceeds 99V, then it hard-clamps the spike to 158V — enough margin for a 200V-rated downstream MOSFET.
Obsolete — sourcing through surplus channels
Vishay lists the 1.5KE110CHE3/73 as Obsolete. Availability is lot-specific and confirmed at RFQ; date-code spread and packaging condition (sealed reel vs cut tape) vary by lot and are verifiable before commitment.
Automotive temperature grade and package
No power line protection — it is a unidirectional/bidirectional transient clamp, not a crowbar or filter.
