600W bidirectional Zener TVS for 150V rail protection
The STMicroelectronics P6KE150CARL is a bidirectional Zener TVS diode from the P6KE TRANSIL™ series, designed to clamp transients on 128V nominal rails. It delivers 600W peak pulse power per the 10/1000µs waveform, clamping at 265V maximum with a 15A peak pulse current rating at the 8/20µs test condition. The 200pF capacitance at 1MHz is a consideration for high-speed data lines, but the part is primarily aimed at general-purpose DC rail protection in industrial, telecom, and power supply applications where a through-hole axial package suits the assembly process.
The P6KE150CARL carries an Obsolete lifecycle status. STMicroelectronics no longer manufactures this specific order code, so new production buys are not available from the factory.
The 128V reverse standoff voltage sets the maximum DC operating level the protected rail can carry without the TVS conducting leakage current. Breakdown occurs at a minimum of 143V, so the part stays off below that threshold. When a surge hits, clamping at 265V maximum limits the voltage seen by downstream components — the 15A peak pulse current at 8/20µs gives the surge capacity for a typical industrial transient. The 600W peak pulse power rating at 10/1000µs is the thermal capability for longer-duration events, though the 8/20µs waveform is the more common test for fast transients like ESD or lightning-induced spikes.
DO-15 axial package — through-hole assembly note
The DO-204AC (DO-15) axial leaded package is a through-hole form factor intended for wave-solder or hand-solder assembly. It occupies more board area than a surface-mount equivalent but offers robust mechanical anchoring and easier thermal dissipation through the leads. The bidirectional configuration means a single device protects both polarities of a floating or AC-coupled line, saving one diode compared to two unidirectional parts back-to-back.