1500 W axial TVS for general-purpose transient clamping
The 1.5KE24CA: The DO-201AA axial package (DO-27 equivalent) is a through-hole form factor that handles the 1500 W pulse without the thermal limitations of a surface-mount body — the leaded construction sinks heat into the PCB copper and the junction temperature range spans -55°C to 175°C, covering industrial and outdoor enclosures where ambient heat is a concern.
Clamping voltage and pulse current — the protection envelope
For a 24 V nominal rail, the 20.5 V reverse standoff gives a guard band of about 4.5 V before the TVS starts leaking appreciably, while the 22.8 V minimum breakdown ensures it triggers before the rail exceeds the downstream device's abs-max rating. The 1500 W rating is a peak number; continuous power dissipation is limited by the package and ambient temperature, so derating is needed in high-duty-cycle applications.
Active production — sourcing and compliance
Littelfuse lists the 1.5KE24CA as Active in its product portfolio. The 1.5KE series is a long-running TVS diode family with broad industry acceptance. Compliance documentation including RoHS and REACH declarations is available from Littelfuse for this part number — the tape-and-reel and cut-tape packaging options cover both prototyping and production volumes.