SMBJ28A The SMBJ28A is a 28V unidirectional TVS diode from Littelfuse Inc. It offers 45.4V clamping voltage and 600W peak pulse power dissipation in a surface mount DO-214AA (SMB) package.
Mfr Part #:

SMBJ28A

Available from 5 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SMBJ28A is a 28V unidirectional TVS diode from Littelfuse Inc. It offers 45.4V clamping voltage and 600W peak pulse power dissipation in a surface mount DO-214AA (SMB) package.
Total Stock: 18,334 pcs
$ Price Range: $0.07 - $0.50

SMBJ28A Available from 5 distributors

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Non-Authorised

SMBJ28A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Current
Forward Voltage
Halogen Free
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Operating Temperature Range
Packaging Type
Peak Forward Surge Current
Polarity
Power
Power Line Protection
Proposition 65
Response Time
SVHC Present
Steady State Power Dissipation
Storage Temperature
Storage Temperature Range
Supplier Device Package
Tape & Reel
Technology
Type
Ul File Number
Unidirectional Channels
Voltage
Working Peak Reverse Voltage

SMBJ28A Description

Short technical summary and product information.

The SMBJ28A is a unidirectional Zener TVS diode designed for overvoltage protection in general-purpose circuits. It features a working peak reverse voltage of 28V and a clamping voltage of 45.4V at a peak pulse current of 13.3A. The device can handle 600W of peak pulse power dissipation (10/1000 µs waveform), making it suitable for surge and transient suppression.

 

This TVS diode utilizes Zener technology for fast response, with a typical response time of less than 1.0 ps from 0V to breakdown. It is rated for operating temperatures from -55°C to 150°C and storage from -55°C to 150°C. The unidirectional polarity simplifies circuit design for single-line protection.

 

The SMBJ28A is housed in a DO-214AA (SMB) surface mount package, compatible with automated pick-and-place assembly. It is supplied in tape and reel packaging. The device is designed for general-purpose applications including power supply protection, data line protection, and voltage transient suppression in consumer electronics.

SMBJ28A Quick Information

Product Type: TVS Diode
Series: SMBJ
Canonical Name: SMBJ28A - TVS Diode, Unidirectional, 28V Working Reverse Voltage, 45.4V Clamping, DO-214AA (SMB)
Subcategory: Unidirectional TVS Diode

SMBJ28A Compliance

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

SMBJ28A Estimated Pricing

Qty Low High
1+ $0.50 $0.50
10+ $0.31 $0.31
100+ $0.20 $0.20
500+ $0.15 $0.15
1,000+ $0.13 $0.13
3,000+ $0.09 $0.09
6,000+ $0.08 $0.08
9,000+ $0.08 $0.08
15,000+ $0.07 $0.07
21,000+ $0.07 $0.07
30,000+ $0.07 $0.07

Estimated market price range - modelled values for guidance only, not live distributor offers.

SMBJ28A Features

  • 600W peak pulse power dissipation.
  • 45.4V clamping voltage at 13.3A.
  • Unidirectional Zener TVS protection.
  • Surface mount DO-214AA (SMB) package.
  • Fast response time less than 1 ps.

SMBJ28A Applications

  • Provides overvoltage protection in general purpose circuits.
  • Suitable for surface mount PCB designs.
  • Protects sensitive electronics from voltage transients.

SMBJ28A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the standoff (working reverse) voltage of the SMBJ28A?

The working peak reverse voltage is 28V.

What is the clamping voltage of the SMBJ28A?

The clamping voltage is 45.4V.

What is the peak pulse current rating of the SMBJ28A?

The peak pulse current is 13.3A.

What package is the SMBJ28A available in?

It is available in a DO-214AA (SMB) surface mount package.

What is the peak pulse power dissipation of the SMBJ28A?

The peak pulse power dissipation is 600W.

What is the operating temperature range of the SMBJ28A?

The operating temperature range is -55°C to 150°C (per datasheet).

Is the SMBJ28A unidirectional or bidirectional?

It is unidirectional with one channel.

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