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HomeProductsCircuit ProtectionTVS - DiodesSMAJ15A-13
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SMAJ15A-13 - Diodes Incorporated

Manufacturer Part Number
SMAJ15A-13
Manufacturer
Diodes Incorporated
Allelco Part Number
32D-SMAJ15A-13
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
3,690 pcs available, New & Original
Parts Description
TVS DIODE 15VWM 24.4VC SMA
Package
SMA
Data sheet
SMAJ15A-13.pdf

Environmental Information

Cylindrical Battery Holders.pdf
RoHs Status
 
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In stock: 3690

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Specifications

SMAJ15A-13 Tech Specifications
Diodes Incorporated - SMAJ15A-13 technical specifications, attributes, parameters and parts with similar specifications to Diodes Incorporated - SMAJ15A-13

Product Attribute Attribute Value
Manufacturer Diodes Incorporated
Voltage - Reverse Standoff (Typ) 15V
Voltage - Clamping (Max) @ Ipp 24.4V
Voltage - Breakdown (Min) 16.7V
Unidirectional Channels 1
Type Zener
Supplier Device Package SMA
Series -
Power Line Protection No
Product Attribute Attribute Value
Power - Peak Pulse 400W
Package / Case DO-214AC, SMA
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount
Current - Peak Pulse (10/1000µs) 16.4A
Capacitance @ Frequency -
Base Product Number SMAJ15
Applications General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.10.0080

Parts Introduction

SMAJ15A-13 Image
SMAJ15A-13 (1)

Manufacturer Part Number

SMAJ15A-13

Manufacturer

diodes

Introduction

The SMAJ15A-13 is a transient voltage suppressor (TVS) diode that offers protection against electrostatic discharges (ESD) and other voltage spikes. It is designed to provide robust and reliable protection for a wide range of electronic devices and applications.

Product Features and Performance

Unidirectional transient voltage suppression

Reverse standoff voltage (Typ.): 15V

Breakdown voltage (Min.): 16.7V

Clamping voltage (Max. @ Ipp): 24.4V

Peak pulse current (10/1000µs): 16.4A

Peak pulse power: 400W

Operating temperature range: -55°C to 150°C (TJ)

Surface mount (SMA) package

Product Advantages

Effective protection against ESD and voltage spikes

High power handling capability

Compact and space-saving surface mount package

Reliable and long-lasting performance

Key Reasons to Choose This Product

Robust and reliable transient voltage protection

Suitable for a wide range of electronic applications

Compact and easy to integrate into your design

Cost-effective solution for protecting sensitive components

Quality and Safety Features

Rigorously tested for quality and reliability

Complies with relevant safety standards

Compatibility

The SMAJ15A-13 is a general-purpose TVS diode that can be used in a variety of electronic applications.

Application Areas

Consumer electronics

Industrial equipment

Telecommunications systems

Automotive electronics

Product Lifecycle

The SMAJ15A-13 has been discontinued. However, there are equivalent or alternative models available from diodes that may be suitable for your application. Please contact our website's sales team for more information on available options and product recommendations.

Frequently Asked Questions(FAQ)

How does the SMAJ15A-13 compare to the SMA6J15A-TR in terms of peak pulse power and clamping voltage under transient events?
The SMAJ15A-13 is rated for a peak pulse power of 400W, while the SMA6J15A-TR typically handles around 600W. Both devices have similar clamping voltages near 24V when subjected to high-current transients, but the SMA6J15A-TR’s higher energy absorption capability makes it more suitable for applications with frequent or prolonged surge exposure. In contrast, the SMAJ15A-13 provides a balance of performance and footprint efficiency for general-purpose protection in moderate surge environments.
What is the significance of the reverse standoff voltage being 15V for the SMAJ15A-13, and how does it influence system-level design?
The 15V reverse standoff voltage indicates that the SMAJ15A-13 remains inactive during normal operation, only triggering once the transient voltage exceeds its breakdown threshold of 16.7V. This allows the device to protect sensitive circuits operating at 15V without introducing leakage current or loading effects. Designers can use this characteristic to safeguard 15V rails in automotive, industrial, or telecommunications systems where clean signal integrity is critical.
Can the SMAJ15A-13 safely clamp a 10/1000µs surge event exceeding 16.4A peak current without degradation?
Yes, the SMAJ15A-13 is specified to handle a peak pulse current of up to 16.4A over a 10µs rise time and 1000µs duration waveform. However, sustained exposure beyond rated conditions—even within these limits—can lead to cumulative junction stress and eventual failure. For repeated surges above 8A, thermal management such as PCB copper area or airflow may be required to maintain reliability.
Why might a designer choose the SMAJ15A-13 over a lower-voltage TVS like the SMAJ5.0A despite requiring 15V protection?
While the SMAJ5.0A offers tighter voltage tolerance and lower capacitance, it lacks sufficient headroom for 15V systems subject to load dump or inductive kickback. The SMAJ15A-13 provides robust protection at the nominal rail voltage, ensuring the clamping action activates only after legitimate threats occur. This reduces risk of false triggering and improves overall system stability in harsh environments.
Does the SMAJ15A-13 require external filtering when used alongside high-speed digital signals?
Due to its unspecified junction capacitance, the SMAJ15A-13 may introduce minor signal distortion if placed too close to high-impedance nodes or fast-edge-rate lines. In applications involving USB, Ethernet, or RF interfaces, additional RC filters or co-packaged solutions should be evaluated. For most power-line or I/O protection tasks, however, its capacitive impact is negligible.
How does the operating temperature range of -55°C to 150°C TJ affect long-term reliability of the SMAJ15A-13 in automotive applications?
The wide junction temperature range ensures stable performance across extreme ambient conditions common in automotive environments. At 150°C TJ, the device maintains defined electrical characteristics, though derating may still be necessary based on actual power dissipation and thermal impedance. Proper layout with adequate ground plane copper helps dissipate heat and prolongs service life.
Are there any compatibility concerns when substituting the SMAJ15A-13 with the SMA6L15A in existing designs?
The SMA6L15A has identical electrical specs but belongs to a different product family (low-capacitance variant). While pin-compatible, differences in package construction and internal doping can affect response speed and surge resilience. Substitution should be verified through transient testing unless both parts are sourced from the same manufacturer lineage.
What precautions should be taken when soldering the SMAJ15A-13 due to its Moisture Sensitivity Level (MSL) rating?
With an MSL of 1, the SMAJ15A-13 has unlimited shelf life under proper storage conditions (dry environment, <30% RH). However, handling practices must prevent electrostatic discharge (ESD), especially given its low breakdown voltage. Although not moisture-sensitive, standard ESD protocols apply during assembly to avoid latent damage from human-body-model events.
How does the lack of RoHS compliance impact procurement and end-of-life planning for the SMAJ15A-13?
Non-RoHS status means the SMAJ15A-13 contains restricted materials such as lead, which may limit its use in certain regions or industries (e.g., EU medical equipment). Designers should verify regulatory requirements early and consider alternative halogen-free, lead-frame-free options if future compliance is mandated. This also affects scrap recovery and sustainability reporting.
What role does the base product number SMAJ15 play in selecting derivatives like the SMAJ15A-13?
The SMAJ15 base series defines a family of 15V bidirectional or unidirectional TVS diodes optimized for surface-mount applications. Derivatives vary by packaging (e.g., -13 indicates tape-and-reel), polarity configuration, and sometimes enhanced surge ratings. Understanding this hierarchy helps engineers quickly identify compatible replacements without re-running full qualification tests.
Can the SMAJ15A-13 be used for bidirectional protection in CAN bus lines?
No, the SMAJ15A-13 is unidirectional. For bidirectional bus protection—such as ISO 7637-compliant automotive buses—a dual-diode arrangement or a bidirectional TVS like the SMBJ15CA would be more appropriate. Using two SMAJ15A-13 devices back-to-back increases component count and parasitic inductance, potentially degrading transient suppression performance.
What trade-offs exist between using the SMAJ15A-13 versus integrating a TVS array IC for multi-channel protection?
The SMAJ15A-13 offers simplicity and cost-effectiveness for single-point protection, whereas TVS arrays provide integrated features like fault monitoring, reduced board space, and coordinated response across multiple lines. However, arrays often come with higher capacitance and limited customization. For isolated 15V rail protection, the discrete SMAJ15A-13 remains a practical choice.
Is the SMAJ15A-13 suitable for protecting Li-ion battery charging circuits against reverse polarity events?
Not directly. Reverse polarity protection requires active components like MOSFETs or dedicated ICs. The SMAJ15A-13 can suppress secondary transients that may arise from incorrect connections, but it cannot block continuous reverse current. It should be combined with a primary protection mechanism for comprehensive safety.
How does the absence of Power Line Protection certification affect deployment of the SMAJ15A-13 in utility infrastructure?
Without formal IEC 61000-4-5 or similar surge immunity certification, the SMAJ15A-13 cannot guarantee consistent performance in severe grid disturbance scenarios. Utility applications demand rigorous validation under standardized waveforms; thus, certified alternatives should be selected unless custom testing confirms adequacy.
What considerations apply when cascading the SMAJ15A-13 with other protective elements like fuses or PPTCs?
Coordination between protective devices is essential to ensure the fuse or PPTC operates before the TVS reaches thermal limits. Since the SMAJ15A-13 reacts instantly to transients, slower-acting resettable devices must be placed upstream. Improper sequencing may result in localized heating or premature failure of the SMAJ15A-13 even if total energy remains below 400W.
How does the ECCN classification EAR99 influence global sourcing decisions involving the SMAJ15A-13?
Classified under EAR99, the SMAJ15A-13 is generally not subject to strict export controls, simplifying international procurement. However, importers should still verify local regulations, especially in countries with evolving semiconductor import policies. This classification also implies low strategic value, aiding supply chain continuity.
What are the implications of the REACH unaffected status for environmental compliance documentation?
REACH Unaffected indicates that Diodes Incorporated has confirmed the SMAJ15A-13 contains no substances of very high concern (SVHCs) above 0.1% w/w threshold. This simplifies compliance declarations for OEMs but does not override national restrictions; users must still maintain updated substance inventories per local law.
When designing a redundant power path, how should multiple SMAJ15A-13 devices be coordinated to avoid contention during switchover transients?
In redundant architectures, placing individual SMAJ15A-13 diodes on each input leg ensures independent clamping without interaction. Careful attention to trace symmetry minimizes differential voltages during hot-swapping. Simulations using worst-case IEC 61000-4-5 waveforms help validate that neither diode exceeds 24.4V clamp or 16.4A peak simultaneously.

Parts with Similar Specifications

The three parts on the right have similar specifications to Diodes Incorporated SMAJ15A-13

Product Attribute SMAJ15A-13-F SMAJ15A-M3/5A SMAJ15A-E3/61 SMAJ15A-M3/61
Part Number SMAJ15A-13-F SMAJ15A-M3/5A SMAJ15A-E3/61 SMAJ15A-M3/61
Manufacturer Diodes Incorporated Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division
Power - Peak Pulse - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Unidirectional Channels - - - -
Power Line Protection - - - -
Applications - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Clamping (Max) @ Ipp - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Current - Peak Pulse (10/1000µs) - - - -
Voltage - Breakdown (Min) - - - -
Voltage - Reverse Standoff (Typ) - - - -
Type - - - -
Capacitance @ Frequency - - - -

SMAJ15A-13 Datasheet PDF

Download SMAJ15A-13 pdf datasheets and Diodes Incorporated documentation for SMAJ15A-13 - Diodes Incorporated.

Datasheets
Cylindrical Battery Holders.pdf
Environmental Information
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Delivery Time

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Delivery Cost

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

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SMAJ15A-13 Image

SMAJ15A-13

Diodes Incorporated
32D-SMAJ15A-13

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