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Vishay General Semiconductor - Diodes Division 1.5SMC300A-E3/57T — Circuit Protection

Vishay 1.5SMC300A-E3/57T TVS, 1500W, 414V Clamp, DO-214AB

MPN1.5SMC300A-E3/57T
Obsolete

Vishay General Semiconductor 1.5SMC, TransZorb® series, Zener TVS diode, 1500W peak pulse, 414V clamping, DO-214AB (SMC), Unidirectional.

Vishay General Semiconductor - Diodes Division 1.5SMC300A-E3/57T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC300A-E3/57T specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)3.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Unidirectional channels1

Product details

The 1.5SMC300A-E3/57T: The 1.5SMC300A-/57T is marked Obsolete by Vishay.

Transient protection ratings and what they mean for the circuit

The 256V reverse standoff voltage means the protected DC bus or signal line should not exceed 256V under normal operation — above that the device begins to leak. For a given surge impedance, this sets the maximum transient energy the TVS can absorb without failing short.

The surface-mount body is designed for reflow soldering onto standard PCB pads — the copper pad area under the package, particularly the cathode tab, sets the thermal impedance for dissipating the pulse energy.

Frequently asked questions

What are the key clamping specs for 1.5SMC300A-/57T?

Peak pulse power is 1500W.

What package does 1.5SMC300A-/57T use?

It uses the DO-214AB (SMC) surface-mount package, also designated as SMCJ. The part is unidirectional with one channel.