What the 1500W rating means for your board
The 1.5KE130C: At that pulse condition the clamping voltage is 187.95 V max at 8.5 A peak current — the clamp holds the transient below the downstream device's breakdown threshold when the line sees a surge. Reverse standoff voltage is 111 V, so it sits across a 100–110 V rail without conducting leakage. Breakdown starts at 117.45 V min, giving a 6 V guard band before the diode begins to avalanche.
Through-hole DO-201AA (DO-27) axial package — the body is 5.3 mm diameter, leads are tin-plated copper. The junction operates from -55°C to 175°C, so the solder joint and lead bend radius must not stress the glass passivation at the extremes. Single bidirectional channel in one package — no polarity marking to confuse; the band identifies the cathode side but the device clamps equally in both directions.
Lifecycle reality — obsolete, but we can still source it
Littelfuse has marked the 1.5KE130C as Obsolete. No official successor or second-source part number is listed by the manufacturer. For compliance verification, request the manufacturer's certificate of compliance or a third-party analysis report with the RFQ.