SM6T39AY

STMicroelectronics

STMicroelectronics SM6T39AY, Automotive AEC-Q101, SM6TY, TRANSIL™, Zener, 600W, DO-214AA, SMB, Tape & Reel (TR); Cut Tape (CT).

STMicroelectronics SM6T39AY
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[IN STOCK] In Stock: 7 pcs
$1.39/ pc

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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

SM6T39AY specifications
Parameter / AttributeSpecification / Value
TypeZener
SeriesAutomotive, AEC-Q101, SM6TY, TRANSIL™
MountingSurface Mount
Voltage - breakdown37.1V
Voltage - clamping (Max) @ ipp69.7V
Voltage - reverse standoff33.3V
Current - peak pulse (10/1000μs)57A (8/20µs)
Power - peak pulse600W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsAutomotive
CaseDO-214AA, SMB
Unidirectional channels1

Technical details

It is designed to protect sensitive downstream electronics from voltage transients on 24 V or 33 V nominal rails, with a reverse standoff voltage of 33.3 V and a maximum clamping voltage of 69.7 V at the peak pulse current. Its single unidirectional channel in a surface-mount DO-214AA (SMB) package suits automated assembly lines and high-volume production.

33.3 V standoff — what it protects

With a reverse standoff voltage (VRWM) of 33.3 V, this diode is intended for 24 V automotive systems or 33 V DC rails where normal operating voltage stays below that threshold. The breakdown voltage range starts at 37.1 V, so the part begins conducting only when the line exceeds that level, leaving the protected bus undisturbed during normal operation. The clamping voltage of 69.7 V at the rated pulse current (57 A for an 8/20 µs waveform) defines the maximum voltage the downstream circuit will see during a surge event.

SM6T39AY
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