1.5kW TransZorb TVS — key specs for the BOM line
The 1.5KE440A-E3/73: Reverse standoff voltage is 376V, meaning the diode draws negligible leakage below that line voltage; breakdown starts at a minimum of 418V, and the clamping ceiling at 2.5A peak pulse current is 602V. General-purpose application tag covers AC line, DC bus, and signal-line transient suppression in industrial and commercial gear — not power-line protection rated, but fine for secondary-side or equipment-level surge clamping.
Package, temperature, and deployment fit
Through-hole DO-201AA (DO-27) axial package — the 1.5KE body handles the 1.5kW pulse without cracking, and the axial leads let it sit in a standard drilled PCB or terminal block with good thermal path to the copper pour. Supplied in Tape & Box (TB) — the /73 suffix signals the lead-free, RoHS-compliant finish and the TB packaging format for through-hole assembly lines.
Lifecycle and sourcing — active, no substitution needed
The 1.5KE440A-/73 is a standard catalog part, not a last-time-buy candidate. For BOM continuity, the 1.5KE440A base number is the same die in the same package; the suffix only changes packaging and plating.