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Bourns Inc. 1.5SMBJ45A-H — Circuit Protection

Bourns 1.5SMBJ45A-H TVS Diode, 1500W, AEC-Q101, DO-214AA

MPN1.5SMBJ45A-H
Active

Bourns Inc. 1.5SMBJ series, Zener TVS diode, Automotive grade, AEC-Q101 qualified, 1500W peak pulse power, 45V reverse standoff, unidirectional, DO-214AA (SMB) surface mount package.

$0.6500Ref. price · indicative, final on quote
Bourns Inc. 1.5SMBJ45A-H datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMBJ45A-H specifications
ParameterValue
TypeZener
Series1.5SMBJ
MountingSurface Mount
Voltage - breakdown50V
Voltage - clamping (Max) @ ipp72.7V
Voltage - reverse standoff45V
Current - peak pulse (10/1000μs)20.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C ~ 150°C (TJ)
GradeAutomotive
PackageTape & Reel (TR) Cut Tape (CT)
ApplicationsGeneral Purpose
QualificationAEC-Q101
CaseDO-214AA, SMB
Unidirectional channels1

Product details

Automotive-grade transient suppression

The 1.5SMBJ45A-H: AEC-Q101 qualification confirms it meets automotive-grade stress and reliability requirements, including temperature cycling and ESD robustness, for under-hood and chassis-mounted electronics.

Clamping performance and breakdown margin

Breakdown voltage starts at 50 V minimum, providing a 5 V guard band above the 45 V standoff before the device begins conducting. The clamping voltage of 72.7 V at 20.6 A peak pulse current limits the transient energy seen by the protected load.

Package and sourcing posture

The base product number is 1.5SMBJ.

Frequently asked questions

Is 1.5SMBJ45A-H AEC-Q101 qualified?

Yes, it carries AEC-Q101 automotive qualification, which covers the stress and reliability testing required for automotive-grade components.