1SMA28AT3G 1SMA28AT3G is a unidirectional TVS diode from Littelfuse with 28V working reverse voltage, 45.4V clamping voltage, and 400W peak power dissipation in a DO-214AC (SMA) package.
Mfr Part #:

1SMA28AT3G

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
1SMA28AT3G is a unidirectional TVS diode from Littelfuse with 28V working reverse voltage, 45.4V clamping voltage, and 400W peak power dissipation in a DO-214AC (SMA) package.
Total Stock: 30,000 pcs

1SMA28AT3G Available from 1 distributor

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1SMA28AT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Capacitance
Capacitance @ Frequency
Clamping Voltage
Current
Medical Grade
Mounting Type
Operating Temperature
Operating Temperature Range
Peak Power Dissipation
Peak Pulse Current
Power
Power Line Protection
Supplier Device Package
Type
Unidirectional Channels
Voltage
Working Reverse Voltage

1SMA28AT3G Description

Short technical summary and product information.

The 1SMA28AT3G is a unidirectional TVS diode from Littelfuse Inc., designed to protect sensitive electronic circuits from high voltage transients. It features a working reverse voltage of 28V and a clamping voltage of 45.4V, with a peak pulse current rating of 8.8A. The device can dissipate up to 400W of peak power (1ms pulse).

 

This TVS diode offers a fast response time typically less than 1ns and is rated for ESD protection (Class 3, >16kV per Human Body Model). It has a capacitance of 430pF at 1MHz and operates over a temperature range of -65°C to 150°C.

 

The 1SMA28AT3G is supplied in a surface mount DO-214AC (SMA) package, suitable for automated assembly. It is Pb-free and RoHS compliant (unverified). Typical applications include communication systems, automotive electronics, power supplies, and industrial controls.

1SMA28AT3G Quick Information

Product Type: TVS Diode
Series: 1SMA10CAT3G
Canonical Name: 1SMA28AT3G Littelfuse TVS Diode, 28V Working Reverse Voltage, 45.4V Clamping, SMA Package
Subcategory: Unidirectional TVS

1SMA28AT3G Compliance

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

1SMA28AT3G Features

  • 400W peak power dissipation at 1ms.
  • 28V working reverse voltage rating.
  • Fast response time typically less than 1ns.
  • Surface mount DO-214AC (SMA) package.
  • Pb-free and RoHS compliant (unverified).

1SMA28AT3G Applications

  • Protects voltage sensitive components from transients.
  • Used in communication systems and power supplies.
  • Suitable for automotive and industrial electronics.
  • Ideal for ESD protection in consumer devices.

1SMA28AT3G FAQs

5 frequently asked questions generated from this part’s specifications.
What is the working reverse voltage of the 1SMA28AT3G?

The working reverse voltage is 28V.

What is the clamping voltage of this TVS diode?

The clamping voltage is 45.4V.

What is the peak power dissipation of the 1SMA28AT3G?

The peak power dissipation is 400W.

What package does the 1SMA28AT3G come in?

It comes in a DO-214AC (SMA) surface mount package.

What is the operating temperature range?

The operating temperature range is -65°C to 150°C.

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