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SMAJ440A SMAJ440A is a unidirectional TVS diode with 440V standoff voltage, 713V clamping voltage, and 400W peak pulse power dissipation. Surface mount in DO-214AC (SMA) package.
Mfr Part #:

SMAJ440A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
SMAJ440A is a unidirectional TVS diode with 440V standoff voltage, 713V clamping voltage, and 400W peak pulse power dissipation. Surface mount in DO-214AC (SMA) package.
✓ Total Stock: 299 pcs

SMAJ440A Available from 1 distributor

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Bristol Electronics ✓
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299 pcs
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SMAJ440A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Mounting Type
Operating Temperature
Peak Forward Surge Current
Power
Power Line Protection
Storage Temperature
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage
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SMAJ440A Description

Short technical summary and product information.

The SMAJ440A is a unidirectional transient voltage suppressor (TVS) diode designed for surge and ESD protection in electronic circuits. It features a standoff voltage of 440V and a breakdown voltage of 491V, clamping transient overvoltages to 713V. With a peak pulse power dissipation of 400W (1 ms pulse) and a peak pulse current of 600mA, it provides robust protection for sensitive components.

 

This TVS diode is housed in a compact DO-214AC (SMA) surface mount package, suitable for automated assembly. It operates over a junction temperature range of -65°C to 150°C and is RoHS compliant. The device is unidirectional with a single protection channel and does not include power line protection.

 

Typical applications include general purpose circuit protection in computing, communications, and industrial equipment. The SMAJ440A is part of the Bourns SMAJ series (though listed under Littelfuse), offering fast response times less than 1.0 ps for unidirectional types.

SMAJ440A Quick Information

Product Type: TVS Diode
Series: SMAJ
Canonical Name: SMAJ440A TVS Diode, Unidirectional, 440V Standoff, DO-214AC (SMA)
Subcategory: Unidirectional TVS Diodes

SMAJ440A Compliance

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

SMAJ440A Features

  • Unidirectional TVS diode, 440V standoff.
  • Clamping voltage 713V at 600mA.
  • 400W peak pulse power dissipation.
  • Surface mount DO-214AC (SMA) package.
  • Operating temperature range -65°C to 150°C.

SMAJ440A Applications

  • General purpose circuit protection applications.
  • Surge protection in computing and video equipment.
  • ESD protection per IEC 61000-4-2 Level 4.
  • EFT protection per IEC 61000-4-4.

SMAJ440A FAQs

6 frequently asked questions generated from this part’s specifications.
What is the standoff voltage of the SMAJ440A?

The standoff voltage (working peak reverse voltage) is 440V.

What is the breakdown voltage of the SMAJ440A?

The breakdown voltage is 491V (nominal).

What is the clamping voltage of the SMAJ440A?

The clamping voltage is 713V.

What is the peak pulse current rating of the SMAJ440A?

The peak pulse current is 600mA (0.6A).

What package does the SMAJ440A come in?

The SMAJ440A is available in a DO-214AC (SMA) surface mount package.

What is the operating temperature range of the SMAJ440A?

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

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