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onsemi P6SMB68CAT3 — Circuit Protection

P6SMB68CAT3 TVS Diode – onsemi 600W Bidirectional Zener

MPNP6SMB68CAT3
Obsolete

onsemi P6SMB68CAT3, 600W bidirectional Zener TVS diode, DO-214AA (SMB) package, 58.1V reverse standoff, 92V clamping, AEC-Q101 qualified for automotive use.

$0.4600Ref. price · indicative, final on quote
onsemi P6SMB68CAT3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

P6SMB68CAT3 specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101
MountingSurface Mount
Voltage - breakdown64.6V
Voltage - clamping (Max) @ ipp92V
Voltage - reverse standoff58.1V
Current - peak pulse (10/1000μs)6.5A
Power - peak pulse600W
Power line protectionNo
Capacitance @ frequency155pF @ 1MHz
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsAutomotive
CaseDO-214AA, SMB
Bidirectional channels1

Product details

Automotive-grade 600 W bidirectional Zener TVS

It clamps transients at 92 V max from a 58.1 V reverse standoff voltage, with a 6.5 A peak pulse current rating (10/1000 µs waveform).

onsemi lists the P6SMB68CAT3 as Obsolete. Available inventory is lot-specific and confirmed at RFQ through independent distribution. Existing designs should verify qualification before committing to a last-time-buy quantity.

AEC-Q101 and temperature range for under-hood deployment

The 155 pF capacitance at 1 MHz is low enough for 1 MHz CAN/LIN bus lines without loading the signal.

Frequently asked questions

Is P6SMB68CAT3 obsolete and what is the replacement?

Yes, onsemi lists the P6SMB68CAT3 as Obsolete. No official replacement has been announced. For a functionally equivalent 600 W bidirectional TVS in DO-214AA with similar standoff and clamp voltages, look at the onsemi P6SMB68A (unidirectional) or the SMBJ58A series, but verify the breakdown voltage and AEC-Q101 grade against your application. The P6SMB68CAT3 is available through independent surplus channels; request a quote for current lots.

What is the difference between P6SMB68CAT3 and P6SMB68A?

The P6SMB68CAT3 is a bidirectional device (clamps both polarities) with a 58.1 V reverse standoff and 92 V clamp, while the P6SMB68A is a unidirectional version with a 58.1 V reverse standoff but a slightly different breakdown voltage range. The bidirectional CAT3 is preferred for AC-coupled or floating lines where polarity is unknown.

Can P6SMB68CAT3 be used in automotive applications?

Yes, it is AEC-Q101 qualified, which certifies it for automotive-grade reliability including temperature cycling and ESD stress per the AEC-Q101 standard.