What the 1500 W peak pulse rating means on the bench
The 1.5KE130CA-B is a 1500 W bidirectional TVS diode in the standard DO-201AA axial-lead package — the same footprint as the 1.5KE series that has been a go-to for transient protection on DC buses and signal lines for years. Rated for 111 V reverse standoff and 179 V clamping at 8.4 A peak pulse current (10/1000 µs waveform), it catches overvoltage events on 100 V nominal rails — think industrial 110 VDC supplies or automotive 24 V systems with a healthy margin for load-dump transients.
Lifecycle reality — obsolete and sourced through surplus
The closest functional replacement is another 1.5KE-series bidirectional TVS with the same standoff voltage, but the specific suffix and date-code traceability will differ — a BOM review is needed before committing. Available through independent surplus and broker channels. Quantities are lot-specific; pricing and availability are confirmed at RFQ time. Expect to verify date code and lot traceability on any surplus stock.
Package and mounting — DO-201 axial through-hole
The DO-201AA (also known as DO-27) axial-lead package is a through-hole part — it goes into a 1.0 mm (0.040 inch) hole on the PCB and is wave-soldered or hand-soldered. The leads are tin-plated copper; they bend easily for vertical or horizontal mounting. Bulk packaging means the parts ship loose in a bag or tube — no tape-and-reel. For a repair bench or low-volume production run, that is fine; for automated pick-and-place, you will need to hand-feed or transfer to a tube feeder. The axial body is about 9 mm long and 5 mm diameter — it takes up board space but reworks cleanly. A hot-air station or soldering iron lifts it without lifting the pad, provided the plated-through hole is clear.