Mfr Part #:

SMAJ12AHE3

Mfr Name: Vishay

The Vishay Dale SMAJ12AHE3 is a unidirectional TVS diode designed for transient voltage suppression. It features a 12V operating voltage and a 400W peak pulse power rating.

✓ Total Stock: 197 pcs

$ Price Range: $0.47

SMAJ12AHE3 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Bristol Electronics ✓ Non-Authorised Inventory information	197 pcs On Request	197 pcs	On Request	1	On Request	On Request	2026-02-25 06:16:38	On Request	On Request

SMAJ12AHE3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Vishay
AEC Qualified	Yes
Automotive Grade	Yes
Mounting Type	Surface Mount
Operating Temperature	-55 °C / 150 °C
Voltage	12 V

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SMAJ12AHE3 Description

Short technical summary and product information.

The Vishay Dale SMAJ12AHE3 is a unidirectional Transient Voltage Suppressor (TVS) diode. It is designed to protect sensitive electronic components from voltage transients.

Key electrical characteristics include an operating voltage of 12V, a typical breakdown voltage of 13.3V, and a clamping voltage of 19.9V at 20.1A. The diode offers a significant peak pulse power rating of 400W, making it suitable for absorbing high-energy transient events.

This TVS diode is housed in a DO-214AC (SMA) package, designed for surface mount applications. It operates within a temperature range of -55°C to 150°C. The unidirectional nature of the device means it provides protection in one direction.

Ideal for applications requiring robust overvoltage protection, the SMAJ12AHE3 is a reliable choice for safeguarding circuits against voltage spikes.

SMAJ12AHE3 Quick Information

Product Type: TVS Diode

Series: SMAJ

Canonical Name: SMAJ12AHE3 Unidirectional Transient Voltage Suppressor Diode

Subcategory: Transient Voltage Suppressor Diodes

SMAJ12AHE3 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

SMAJ12AHE3 Estimated Pricing

Qty	Low	High
1+	$0.47	$0.47

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

SMAJ12AHE3 Features

Unidirectional TVS diode for voltage protection.
12V operating voltage.
400W peak pulse power rating.
DO-214AC surface mount package.
Wide operating temperature range.

SMAJ12AHE3 Applications

Protects automotive sensor input lines.
Safeguards industrial control system interfaces.
Filters electrostatic discharge on data ports.
Shields communication module voltage regulators.
Prevents latch-up in microcontroller circuits.

SMAJ12AHE3 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the operating voltage of the SMAJ12AHE3?

The operating voltage is 12 V.

What is the peak pulse power rating for the SMAJ12AHE3?

The peak pulse power rating is 400 W.

What is the clamping voltage of the SMAJ12AHE3?

The clamping voltage is 19.9 V at 20.1 A.

What is the operating temperature range for this TVS diode?

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

What package type is the SMAJ12AHE3 in?

It is in a DO-214AC package.

How is the SMAJ12AHE3 mounted?

It is a surface mount device.