1500W bidirectional TVS — DO-201 axial
The 1.5KE30CA-B: It clamps at 41.4V max with a 25.6V reverse standoff, making it a fit for 24V rail protection where the normal operating voltage stays under 25.6V and the transient energy stays within the 1500W envelope.
Breakdown voltage minimum is 28.5V, so the device starts conducting between 28.5V and the clamping ceiling of 41.4V. The 36A peak pulse current (Ipp) at the 10/1000µs test pulse defines the surge capacity — a 24V rail hit with a transient that pushes 36A through the TVS will be held to 41.4V, which is the voltage the downstream components must survive.
Obsolete — sourcing through independent channels
Diodes Incorporated lists this part as Obsolete. No pin-compatible direct replacement from Diodes is documented, so a board-level substitution requires reviewing the clamping voltage and package footprint against an active TVS from the same or another brand.