What the 1500W pulse rating means for your protection design
The 1.5KE24CAHE3_B/C: That 1500W figure is the maximum power it can absorb in a single pulse before the junction temperature exceeds the safe operating area — it's not a continuous rating, but a surge-handling spec for transient events like load dump or lightning-induced spikes. With a 20.5V reverse standoff voltage and a 22.8V minimum breakdown, this part clamps transients at 33.2V maximum while conducting 47A peak pulse current. The 6.7V gap between standoff and clamp means a 24V nominal rail sees the TVS start conducting around 23V and hold the line below 34V — clean protection for sensitive downstream silicon.
Automotive-grade qualification and deployment context
The DO-201AA axial-lead package is a through-hole form factor — hand-solderable on a perfboard or wave-solderable in production. The 1.5KE series footprint is standard across the TransZorb family, so a board layout for a 1.5KE24A (unidirectional) takes this bidirectional variant with the same pad geometry.