Clamping and breakdown margins
The 1.5KE150AHE3_B/C: The minimum breakdown voltage is 143V, providing a 15V margin above the 128V standoff — this ensures the device does not conduct during normal operation while still clamping fast transients before they reach 207V. The 1500W peak pulse rating at 10/1000µs means this part handles substantial surge energy; the 7.6A peak pulse current at the clamp voltage confirms the power budget for telecom and industrial 128V bus protection.
Through-hole package and board integration
Housed in a DO-201AA (DO-27) axial-lead package with the 1.5KE supplier device package code, this TVS is a through-hole part intended for point-to-point wiring or PCB mounting with axial lead holes — the large body and leads handle the thermal pulse of a 1500W surge without lifting pads.