Device identity and surge rating
The 1.5KE220AE3/TR13: The 185 V reverse standoff voltage means the device does not conduct at normal line levels; clamping begins at the 209 V minimum breakdown and limits transients to 328 V maximum at the 4.6 A peak pulse current. This is a single-channel suppressor in a through-hole DO-201AA (DO-27) axial package, supplied on tape and reel.
Microsemi has marked the 1.5KE220AE3/TR13 as obsolete. Sourcing runs through independent distribution and surplus channels; each lot is verified for date-code authenticity and RoHS compliance per the original manufacturer's PCN window. Availability and pricing are confirmed at RFQ against the BOM quantity.
Temperature range and board fit
The junction temperature range spans -65 °C to +150 °C, covering industrial and military-grade thermal profiles. The DO-201AA axial body is a standard through-hole footprint — the leads solder into a 1.1 mm diameter plated hole on a 0.100-inch pitch. The wide operating range and 1500 W surge capacity suit it for secondary-side transient clamping in DC power rails and general-purpose board-level protection where a unipolar clamp is specified.