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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Taiwan Semiconductor Corporation SMA6J11A

Name: SMA6J11A
Brand: Taiwan Semiconductor Corporation
SKU: SMA6J11A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMA6J11A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: SMA6J11A.pdf

Description:: TVS DIODE 11VWM 17.2VC DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:8,783

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Product details

Overview

SMA6J11A from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 11 V, breakdown voltage range 12.2–13.5 V at 1 mA, clamping voltage of 17.2 V at 5 A, and DO-214AC (SMA) package. It protects DC/DC converters and SMPS against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.

For engineers reviewing the SMA6J11A datasheet, SMA6J11A pinout, SMA6J11A application, or SMA6J11A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, junction temperature rating up to 175 °C, compliance with J-STD-020 level 1 moisture sensitivity, and RoHS/halogen-free construction.

Technical Context

This unidirectional TVS diode uses a glass-passivated silicon junction for stable breakdown and fast response (<1.0 ps), enabling effective suppression of fast-rising automotive and industrial transients. Its single-die DO-214AC configuration supports automated placement and provides polarity indication via cathode band.

The device operates across –55 °C to +175 °C junction temperature, delivers 600 W peak pulse power (10/1000 µs), and maintains <1 µA reverse leakage at 11 V, ensuring low standby power loss in protected circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	11 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating bias.
V_BR @ I_T=1 mA	12.2–13.5 V - Measured breakdown threshold; ensures reliable turn-on during overvoltage events.
V_C @ I_PPM=5 A	17.2 V - Clamped voltage during 5 A transient; defines maximum stress on downstream ICs.
P_PPM	600 W - Peak pulse power handling (10/1000 µs); qualifies for harsh automotive load-dump immunity.
T_J max	+175 °C - Maximum junction temperature; enables use in high-ambient industrial environments.
Package	DO-214AC (SMA) - Standardized surface-mount outline with 0.060 g mass and matte tin-plated leads.

Pinout & Package

DO-214AC (SMA) package: molded epoxy case meeting UL 94V-0, cathode indicated by band, matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential side of protected line; enables unidirectional clamping to ground.
Cathode	Current exit point during reverse-biased clamping	Connected to protected node; conducts surge current to ground when V_PROTECTED exceeds V_BR.

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable V_BR over temperature and lifetime, reducing parameter drift in automotive-grade designs.
Clamping voltage ≤17.2 V at 5 A	Protects 12 V rail logic ICs (e.g., microcontrollers, CAN transceivers) without exceeding absolute maximum ratings.
ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance	Validates robustness against real-world automotive electrical disturbances including battery disconnect and inductive switching.
J-STD-020 Level 1 moisture sensitivity	Permits standard SMT reflow without pre-bake, simplifying manufacturing for high-volume PCB assembly.

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Input stage protection against line surges and coupling noise in 12 V input SMPS modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp absorbing 600 W transients while limiting voltage to ≤17.2 V. Use Value: Prevents MOSFET gate oxide failure and controller latch-up during EN 61000-4-5 coupled surges.	Use Scenario: Output rail protection in isolated 5 V/3.3 V DC/DC converters powering FPGA or MCU cores. IC Role / Device Role / Timing Role: Fast-response (<1 ps) clamping element placed adjacent to converter output filter. Use Value: Maintains regulated output integrity during load dump or hot-swap transients per ISO 16750-2.
Automotive Lighting Module	Industrial Adapter Interface
Use Scenario: Protection of LED driver IC inputs against load dump and jump-start transients in headlamp control units. IC Role / Device Role / Timing Role: Primary transient shunt on 12 V supply rail upstream of buck controller. Use Value: Enables AEC-Q101-compliant design without additional series impedance or timing delays.	Use Scenario: AC/DC adapter secondary-side output protection for USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Standoff-rated TVS suppressing ESD and lightning-induced surges on 12–24 V outputs. Use Value: Achieves IEC 61000-4-2 Level 4 and IEC 61000-4-5 Line-to-Ground 1 kV compliance.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Input stage protection against line surges and coupling noise in 12 V input SMPS modules.

IC Role / Device Role / Timing Role: Unidirectional TVS clamp absorbing 600 W transients while limiting voltage to ≤17.2 V.

Use Value: Prevents MOSFET gate oxide failure and controller latch-up during EN 61000-4-5 coupled surges.

Use Scenario: Output rail protection in isolated 5 V/3.3 V DC/DC converters powering FPGA or MCU cores.

IC Role / Device Role / Timing Role: Fast-response (<1 ps) clamping element placed adjacent to converter output filter.

Use Value: Maintains regulated output integrity during load dump or hot-swap transients per ISO 16750-2.

Automotive Lighting Module

Industrial Adapter Interface

Use Scenario: Protection of LED driver IC inputs against load dump and jump-start transients in headlamp control units.

IC Role / Device Role / Timing Role: Primary transient shunt on 12 V supply rail upstream of buck controller.

Use Value: Enables AEC-Q101-compliant design without additional series impedance or timing delays.

Use Scenario: AC/DC adapter secondary-side output protection for USB-C PD or PoE-powered devices.

IC Role / Device Role / Timing Role: Standoff-rated TVS suppressing ESD and lightning-induced surges on 12–24 V outputs.

Use Value: Achieves IEC 61000-4-2 Level 4 and IEC 61000-4-5 Line-to-Ground 1 kV compliance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMA6J11CA	Bidirectional variant; symmetric clamping for AC-coupled or floating lines.	Required where differential or bidirectional transients dominate (e.g., RS-485, CAN bus).	Select SMA6J11CA only if circuit lacks defined ground reference or requires symmetrical protection.
SMBJ11A	Same V_WM/V_BR but higher P_PPM = 600 W in DO-214AA (SMB); 20% larger footprint.	Preferred when board space allows larger package and higher surge margin is needed.	Choose SMBJ11A for legacy designs using SMB pads or where thermal derating margin is critical.

Compared with SMA6J11CA and SMBJ11A, the SMA6J11A offers optimal balance of compact DO-214AC size, unidirectional clamping efficiency, and ISO 7637-2 compliance-making it ideal for space-constrained 12 V automotive and industrial DC rails where polarity is fixed.

Availability

SMA6J11A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and automotive lighting modules requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SMA6J11A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.

The SMA6JxxA series is part of TSC's transient voltage suppressor portfolio, engineered specifically for robust, high-reliability protection in automotive electronics and industrial power systems subject to ISO 7637-2 and ISO 16750-2 stress conditions.

FAQ

What is the maximum clamping voltage of the SMA6J11A at its rated peak pulse current?

The SMA6J11A has a maximum clamping voltage (V_C) of 17.2 V when subjected to its rated peak pulse current (I_PPM) of 5 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees that protected downstream components will not experience voltages exceeding this level during specified surge events. The SMA6J11A maintains this clamping performance across its full operating temperature range.

Does the SMA6J11A meet automotive transient immunity standards?

Yes, the SMA6J11A meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive electronic control units, lighting modules, and infotainment systems. Its 600 W peak pulse power rating and fast response time (<1.0 ps) ensure reliable suppression of real-world vehicle electrical disturbances, including load dump and inductive switching spikes. The SMA6J11A is designed to operate reliably from –55 °C to +175 °C junction temperature.

What is the marking code for the SMA6J11A on the device body?

The SMA6J11A is marked with the code "6AZ" on its package body, as specified in Taiwan Semiconductor's official datasheet revision E2102. This marking appears adjacent to the cathode band and is used for visual identification and traceability during PCB assembly and field service. The "6AZ" code uniquely identifies the 11 V variant within the SMA6J10A–SMA6J30A family.

Is the SMA6J11A RoHS and halogen-free compliant?

Yes, the SMA6J11A is RoHS compliant and halogen-free in accordance with IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its matte tin-plated leads satisfy J-STD-002 solderability requirements. These environmental and safety qualifications make the SMA6J11A suitable for global electronics manufacturing, including EU and China RoHS-regulated products.

What is the moisture sensitivity level (MSL) rating for the SMA6J11A?

The SMA6J11A has a moisture sensitivity level (MSL) rating of Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions (<30 °C / 60% RH) and processed using standard SMT reflow profiles without pre-baking. This eliminates moisture-related popcorning risk during assembly and simplifies logistics for high-volume production of boards containing the SMA6J11A.

SMA6J11A Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Package/Case:: DO-214AC, SMA

Series:: SMA6J

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 11V

Voltage - Breakdown (Min):: 12.2V

Voltage - Clamping (Max) @ Ipp:: 17.2V

Current - Peak Pulse (10/1000µs):: 24.8A

Power - Peak Pulse:: 600W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

SMA6J11A FAQ

1.How can I place an order for SMA6J11A through Aetrix?

Please submit a Request for Quotation (RFQ) for SMA6J11A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SMA6J11A reliable?

The price and inventory of SMA6J11A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J11A is usually 5 days.

3.What payment methods are accepted for SMA6J11A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J11A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMA6J11A?

SMA6J11A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMA6J11A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SMA6J11A?

For technical support, including SMA6J11A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J11A requirements.

6.How does Aetrix verify that SMA6J11A is sourced from the original manufacturer or authorized distributors?

All SMA6J11A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMA6J11A meets industry standards.

7.What is the process for return or replacement of SMA6J11A?

All SMA6J11A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J11A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SMA6J11A part is unused and in its original packaging.

Return procedure for SMA6J11A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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