1.5KE20A_R2_00001 — 1500 W Unidirectional TVS in DO-201AE
This is a unidirectional device — one channel per package — and is not rated for power line protection, meaning it is intended for secondary-side transient suppression rather than mains AC input clamping.
Obsolete — Sourcing Through Independent Channels
Panjit has marked the 1.5KE20A_R2_00001 as obsolete. Because it is a standard DO-201AE TVS, parametric equivalents from other manufacturers may be considered for new designs, but no direct cross-reference is held on this record.
Voltage Ratings and Clamping Performance
The 17.1 V reverse standoff voltage means this diode starts conducting only when the line exceeds that level — it sits across a 12 V or 15 V rail without leaking appreciably under normal operation. The 19 V minimum breakdown guarantees the avalanche region is entered before the voltage reaches a level that would stress downstream silicon rated at, say, 20 V absolute maximum.
Package and Mounting — DO-201AE Axial
The DO-201AE axial package requires a through-hole PCB footprint with lead spacing matching the body length — typically 0.375-inch lead spacing on 0.050-inch diameter holes. The -65°C to 175°C operating junction range covers extreme environments from cold storage to engine-bay heat, but the junction temperature during a transient event rises above ambient — the 175°C limit must include the adiabatic temperature rise from the pulse.