The breakdown voltage range starts at 11.4 V, and clamping is held to 16.7 V at the peak pulse current of 90 A — enough margin to protect 12 V logic and sensor supplies without nuisance triggering from normal line ripple.
Lifecycle reality: obsolete, no direct successor listed
onsemi has marked the 1.5KE12AG as Obsolete. No official successor part number is published under the 1.5KE base series. For new designs or BOM maintenance, a parametric cross to another 1500 W, 10.2 V standoff Zener TVS in DO-201AD is the practical path. Confirming date-code consistency and original packaging is critical when sourcing from non-franchised supply.
Package and mounting: DO-201AD axial leaded
Through-hole DO-201AD axial package — the lead spacing and body diameter match industry-standard footprints for 1.5 kW TVS diodes. No special pad geometry beyond the usual 0.042-inch (1.07 mm) hole diameter for the leads.
Sourcing the 1.5KE12AG today
With the 1.5KE12AG classified Obsolete by onsemi, new-stock availability is limited to surplus inventories and distributor backlots. Pricing and lead time are lot-dependent — date-code spread and packaging condition (sealed reel vs. cut tape) drive the per-unit cost. Submit an RFQ with your target quantity and acceptable date-code window for a current-market assessment.