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SMAJ12A Bourns SMAJ12A is a 400W unidirectional TVS diode with 12V reverse standoff voltage and 19.9V clamping, in a DO-214AC (SMA) surface mount package.
Mfr Part #:

SMAJ12A

Available from 2 distributors
Mfr Name: Bourns
Bourns
Bourns SMAJ12A is a 400W unidirectional TVS diode with 12V reverse standoff voltage and 19.9V clamping, in a DO-214AC (SMA) surface mount package.
✓ Total Stock: 3,570 pcs
$ Price Range: $0.11

SMAJ12A Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
3,210 pcs
On Request
3210 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
360 pcs
$0.11 ℹ
Qty Price
0+ 0.11
360 pcs $0.11
QtyPrice
0+ 0.11
1 On Request On Request On Request On Request On Request
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SMAJ12A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage
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SMAJ12A Description

Short technical summary and product information.

The Bourns SMAJ12A is a transient voltage suppressor (TVS) diode designed for surge and ESD protection in general purpose applications. It offers a peak pulse power dissipation of 400W and a peak pulse current capability of 20.1A, with a clamping voltage of 19.9V. This unidirectional device operates over a junction temperature range of -55°C to +150°C.

 

Housed in a compact DO-214AC (SMA) surface mount package, the SMAJ12A is suitable for automated assembly and space-constrained designs. It is RoHS compliant and MSL Level 1 (unlimited), making it compatible with standard soldering processes. The series is UL recognized and meets IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5 standards for ESD, EFT, and surge immunity.

 

Typical applications include protection of power lines, data lines, and I/O interfaces in computing, communication, and consumer electronics. The fast response time (less than 1.0 picosecond for unidirectional devices) ensures effective clamping of transient events without compromising signal integrity.

SMAJ12A Quick Information

Product Type: TVS Diode
Series: SMAJ
Canonical Name: SMAJ12A TVS Diode, Unidirectional, 400W, DO-214AC (SMA)
Subcategory: Unidirectional

SMAJ12A Compliance

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

SMAJ12A Features

  • 400W peak pulse power dissipation.
  • Unidirectional TVS in DO-214AC SMA.
  • 12V standoff, 19.9V clamping voltage.
  • Operates from -55°C to +150°C.
  • RoHS compliant and UL recognized.

SMAJ12A Applications

  • Protects power lines from voltage surges.
  • Used in I/O interface ESD protection.
  • Suitable for portable electronics designs.

SMAJ12A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the clamping voltage of the SMAJ12A?

The clamping voltage is 19.9V.

What is the peak pulse power rating?

The peak pulse power is 400W.

What package does the SMAJ12A come in?

The SMAJ12A is available in a DO-214AC (SMA) surface mount package.

Is the SMAJ12A RoHS compliant?

Yes, it is listed as RoHS3 compliant.

What is the operating temperature range?

The operating temperature range is -55°C to +150°C (junction temperature).

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