1500 W peak pulse, 12.9 V standoff — the rail clamp for 12 V buses
The 1.5KE16BULK: For a 12 V rail with a 16 V absolute maximum rating, the 23.5 V clamp leaves a guard band; the designer should verify the downstream device's avalanche capability against this ceiling.
Breakdown window and temperature range
Minimum breakdown voltage is 14.4 V, ensuring the diode does not conduct at the 12.9 V standoff level. Power line protection is not supported — the part is designed for unidirectional clamping on signal or DC power lines, not for AC mains or bidirectional applications.
DO-201 axial — through-hole rework and board fit
Packaged in a DO-201AA (DO-27) axial leaded form, the 1.5KE16BULK is a through-hole device. The axial leads make it straightforward to hand-solder or wave-solder; the body is large enough to read the marking clearly under a bench magnifier. No orientation ambiguity — the cathode band identifies the unidirectional polarity. The bag packaging suits low-volume assembly or prototyping. For rework, the axial leads tolerate multiple heat cycles if the joint is properly wetted; the junction-to-lead thermal path is robust enough that a hot-air station set to 300°C on the lead shoulder clears the joint without cooking the die.