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STMicroelectronics P6KE15CA — Circuit Protection

STMicroelectronics P6KE15CA TRANSIL TVS Diode, 600W

MPNP6KE15CA
NRND

STMicroelectronics P6KE15CA TRANSIL™ bidirectional TVS diode, 600W peak pulse power, 14.3V min breakdown, 27.2V clamp, 147A (8/20µs), DO-204AC (DO-15) axial, through hole.

$0.6400Ref. price · indicative, final on quote
STMicroelectronics P6KE15CA datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

P6KE15CA specifications
ParameterValue
TypeZener
SeriesP6KE, TRANSIL™
MountingThrough Hole
Voltage - breakdown14.3V
Voltage - clamping (Max) @ ipp27.2V
Voltage - reverse standoff12.8V
Current - peak pulse (10/1000μs)147A (8/20µs)
Power - peak pulse600W
Power line protectionNo
Capacitance @ frequency950pF @ 1MHz
PackageCut Tape (CT); Tape & Box (TB)
ApplicationsGeneral Purpose
CaseDO-204AC, DO-15, Axial
Bidirectional channels1

Product details

The STMicroelectronics P6KE15CA is a 600W bidirectional TRANSIL™ TVS diode in a DO-204AC (DO-15) axial-lead through-hole package. It is designed for general-purpose transient voltage suppression on unipolar or bipolar lines where the working voltage sits at 12.8V reverse standoff.

The 14.3V minimum breakdown voltage sets the threshold where the diode starts conducting — for a 12V nominal rail, this provides a guard band above the steady-state supply, so the device stays out of conduction during normal operation. The 27.2V maximum clamp at 147A (8/20µs waveform) defines the voltage the protected circuitry sees during a surge; a downstream DC-DC converter or linear regulator needs to survive that peak without damage. The 600W peak pulse rating is the energy-handling envelope for a single 10/1000µs pulse — derate for repetitive events or elevated ambient temperature.

ST has not issued a formal last-time-buy notice as of the current record, but the part is no longer the recommended choice for new board layouts.

Frequently asked questions

Is P6KE15CA obsolete?

It is not yet formally discontinued, but ST advises against using it in new designs. For existing production, it can be sourced through independent distribution — submit an RFQ for current availability and pricing.

What is the difference between P6KE15A and P6KE15CA?

The P6KE15A is a unidirectional TVS diode (one channel, cathode-anode orientation), while the P6KE15CA is bidirectional. The bidirectional version clamps both positive and negative transients with a single device, making it suitable for AC lines or bipolar signal rails where the polarity is not fixed.

Can I use P6KE15CA for 12V protection?

Yes — the 12.8V reverse standoff is designed for 12V nominal rails. The 14.3V minimum breakdown ensures the diode does not conduct during normal 12V operation, while the 27.2V clamp limits the surge voltage seen by the downstream circuitry.