SMCJ54A The SMCJ54A is a unidirectional TVS diode from Littelfuse Inc. It offers 1500W peak pulse power dissipation, 54V reverse standoff voltage, and 87.1V clamping voltage in a surface mount DO-214AB (SMC) package.
Mfr Part #:

SMCJ54A

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SMCJ54A is a unidirectional TVS diode from Littelfuse Inc. It offers 1500W peak pulse power dissipation, 54V reverse standoff voltage, and 87.1V clamping voltage in a surface mount DO-214AB (SMC) package.
Total Stock: 6,026 pcs

SMCJ54A Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
6,000 pcs
6000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Non-Authorised Inventory information
26 pcs
26 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

SMCJ54A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Breakdown Voltage
Current
Halogen Free
Maximum Instantaneous Forward Voltage @ 100A
Mounting Type
Operating Temperature
Peak Forward Surge Current (8.3ms)
Power
Power Dissipation on Infinite Heat Sink
Power Line Protection
Reverse Standoff Voltage
SVHC Present
Storage Temperature
Storage Temperature Range
Supplier Device Package
Type
Typical Thermal Resistance Junction to Ambient
Typical Thermal Resistance Junction to Lead
Unidirectional Channels
Voltage

SMCJ54A Description

Short technical summary and product information.

The SMCJ54A is a surface mount TVS diode from Littelfuse Inc., part of the SMCJ series. It is designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events.

 

With a peak pulse power dissipation of 1500W (10/1000µs waveform), it provides robust clamping capability. The reverse standoff voltage is 54V, and the clamping voltage is 87.1V at a peak pulse current of 17.3A. It is a unidirectional device with a single channel.

 

The device is housed in a DO-214AB (SMC) package and is designed for surface mount applications to optimize board space. It has a glass passivated junction and is halogen-free and RoHS compliant. Operating temperature range is -55°C to 150°C.

SMCJ54A Quick Information

Product Type: TVS Diode (Transient Voltage Suppression)
Series: SMCJ
Canonical Name: SMCJ54A TVS Diode, 1500W, Unidirectional, 54V Reverse Standoff Voltage, DO-214AB (SMC) Package
Subcategory: Unidirectional TVS Diode

SMCJ54A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

SMCJ54A Features

  • 1500W peak pulse power dissipation at 10/1000µs.
  • Unidirectional TVS diode with 54V reverse standoff voltage.
  • Clamping voltage of 87.1V protects downstream circuits.
  • Surface mount DO-214AB (SMC) package for space savings.
  • Halogen-free and RoHS compliant for environmental safety.

SMCJ54A Applications

  • Protects I/O interfaces from voltage transients.
  • Safeguards VCC bus in electronic systems.
  • Ideal for telecom, computer, and industrial equipment.
  • Used in consumer electronics for transient suppression.

SMCJ54A FAQs

6 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMCJ54A?

The reverse standoff voltage is 54V.

What is the minimum breakdown voltage of the SMCJ54A?

The minimum breakdown voltage is 60V.

What is the clamping voltage of the SMCJ54A?

The clamping voltage is 87.1V.

What is the peak pulse current rating of the SMCJ54A?

The peak pulse current (10/1000µs) is 17.3A.

What package is the SMCJ54A available in?

The SMCJ54A is available in a DO-214AB (SMC) surface mount package.

What is the operating temperature range of the SMCJ54A?

The operating temperature range is -55°C to 150°C.

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