1500 W bidirectional transient suppressor for 9.4 V rails
The 1.5KE11CA: The 1500 W rating at 10/1000 µs is the standard industrial surge rating — it handles the energy in a typical lightning-induced transient or inductive load dump on a 12 V system bus.
Package and thermal fit: DO-201 axial
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE11CA mounts through-hole. The junction operates from -55 °C to 175 °C, covering the full industrial and automotive under-hood temperature envelope. The axial body conducts heat through the leads into the PCB copper — keep the lead length short and the pad area generous to keep the junction below 175 °C under repetitive surge conditions. The through-hole form factor suits point-to-point wiring on terminal strips as well as PCB mounting — a common choice in power supplies, motor drives, and telecom line cards where a single TVS clamps the input bus.
Active production — sourced per RFQ
Littelfuse lists the 1.5KE11CA as Active in its current product portfolio. For volume builds, the tape-and-reel packaging option supports automated insertion. Cut-tape quantities are also available for prototyping or low-volume production. The base part number 1.5KE covers a wide voltage range — if the 9.4 V standoff is not the exact rail voltage, a sibling in the same package and power class exists without a board change.