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1SMA12AT3G 1SMA12AT3G is a 400W unidirectional TVS diode from On Semiconductor. It features a 12V reverse standoff voltage and 19.9V clamping voltage in a surface-mount SMA (DO-214AC) package.
Mfr Part #:

1SMA12AT3G

Available from 4 distributors
Mfr Name: On Semiconductor
On Semiconductor
1SMA12AT3G is a 400W unidirectional TVS diode from On Semiconductor. It features a 12V reverse standoff voltage and 19.9V clamping voltage in a surface-mount SMA (DO-214AC) package.
Total Stock: 319,228 pcs

1SMA12AT3G Available from 4 distributors

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1SMA12AT3G Specifications Quick View

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

1SMA12AT3G Description

Short technical summary and product information.

The 1SMA12AT3G is a Zener-type unidirectional transient voltage suppression (TVS) diode manufactured by On Semiconductor. It is designed to protect sensitive electronics from voltage transients and surges.

 

This device offers a reverse standoff voltage of 12V and a clamping voltage of 19.9V at a peak pulse current of 20.1A. It can handle 400W of peak pulse power (10/1000µs waveform). The capacitance is 925pF at 1MHz. It is not intended for power line protection.

 

The 1SMA12AT3G is housed in a surface-mount DO-214AC (SMA) package. It operates over a temperature range of -65°C to 150°C. It is RoHS3 compliant with MSL level 1 (unlimited).

1SMA12AT3G Quick Information

Product Type: TVS Diode
Series: SMA
Canonical Name: 1SMA12AT3G TVS Diode, 12V Reverse Standoff, 19.9V Clamping, 400W Peak Pulse Power, Unidirectional, SMA Package
Subcategory: Unidirectional Zener TVS

1SMA12AT3G Compliance

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

1SMA12AT3G Features

  • 12V reverse standoff voltage.
  • 19.9V clamping voltage at 20.1A.
  • 400W peak pulse power handling.
  • Unidirectional Zener protection.
  • Surface-mount SMA package.

1SMA12AT3G Applications

  • Protects sensitive electronics from voltage transients.
  • Suitable for general-purpose circuit protection.
  • Used in low-voltage DC power rails.
  • Ideal for portable and battery-powered devices.

1SMA12AT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of 1SMA12AT3G?

12V.

What is the clamping voltage of 1SMA12AT3G?

19.9V.

What is the peak pulse current rating?

20.1A.

What is the peak pulse power rating?

400W.

What package is the 1SMA12AT3G available in?

DO-214AC (SMA) surface-mount package.

What is the operating temperature range?

-65°C to 150°C.

Is the 1SMA12AT3G RoHS compliant?

Yes, it is listed as RoHS3 compliant.

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