The P6SMB36CAT3 is a bidirectional Zener TVS diode from onsemi, part of the P6SMB series rated for 600W peak pulse power per the 10/1000µs waveform (cite:). It clamps transients on a 24V nominal rail — the 30.8V standoff voltage (cite:) keeps the part off the line under normal conditions, and the 34.2V minimum breakdown (cite:) ensures the avalanche triggers before the rail rises above 35V. The 49.9V maximum clamp voltage (cite:) at 12A peak pulse current (cite:) is the upper bound the downstream circuitry must survive. The 280pF typical capacitance at 1MHz (cite:) is low enough to not load a 100kHz CAN or LIN bus, but check against higher-speed interfaces.
Why the obsolete status changes your BOM decision
The OEM auditor will ask for PPAP on any substitute; a non-AEC-Q101 part requires re-qualification at the system level. For a BOM line that must be filled today, we source this part through independent and franchise channels against an RFQ. Confirm the exact date code and lot traceability requirements with your quality team before committing.
Packaged in DO-214AA (SMB) (cite:), surface-mount (cite:) with a 280pF capacitance at 1MHz (cite:). The tape-and-reel and cut-tape options (cite:) cover both prototype and volume assembly. The SMB footprint is smaller than SMC but larger than SOD-123 — the pad area under the cathode tab sets the thermal impedance for the 600W pulse.