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Vishay General Semiconductor - Diodes Division SMA5J11HE3/5A
- Part No.:
- SMA5J11HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11HE3/5A.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,037
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Product details
Overview
SMA5J11HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown range (VBR), 18.2 V clamping voltage (VC) at 27.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the SMA5J11HE3/5A datasheet, SMA5J11HE3/5A pinout, SMA5J11HE3/5A application, or SMA5J11HE3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 11 V), but conducts heavily when transient voltage exceeds its breakdown threshold to clamp downstream circuitry. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance.
The device delivers fast response (<1 ns) to transients induced by inductive switching or ESD, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead). It is rated for non-repetitive 8.3 ms half-sine surge current up to 40 A and supports operation from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 12.2 V / 13.5 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 18.2 V - Clamped voltage seen by protected circuit during 27.5 A 10/1000 µs surge |
| PPPM | 500 W - Peak surge power handling capability under standardized 10/1000 µs waveform |
| IFSM | 40 A - Maximum non-repetitive forward surge current (8.3 ms half-sine), critical for load dump survival |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments |
| Package | DO-214AC (SMA) - Surface-mount outline with cathode band marking; compatible with standard SMT reflow |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two leads, cathode identified by a band at one end. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (during surge conduction) | Connected to protected line side; carries full surge current during clamping event |
| Cathode (banded end) | Reverse-biased reference terminal | Connected to ground or lower-potential rail; establishes VWM and VBR reference point |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable VBR over temperature and lifetime; reduces parameter drift in harsh environments |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock testing |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| UL 94 V-0 molding compound | Self-extinguishing encapsulant meets flammability safety requirements for enclosed automotive modules |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamp |
|---|---|
Use Scenario: Protecting engine control unit (ECU) 12 V input against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and system ground. Use Value: Clamps transients to ≤18.2 V while absorbing 500 W pulses, preventing damage to upstream regulators and microcontrollers. | Use Scenario: Safeguarding PLC I/O module power inputs exposed to relay coil flyback and field wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC supply line, upstream of DC/DC converter. Use Value: Withstands 40 A 8.3 ms surges and maintains <1 µA leakage at 11 V, ensuring minimal standby power loss. |
| Automotive Sensor Signal Line Protection | Telecom Equipment DC Bias Protection |
Use Scenario: Shielding CAN transceiver VCC pins from coupled transients on adjacent power traces. IC Role / Device Role / Timing Role: Localized TVS mounted directly at connector or IC pad for shortest possible path to ground. Use Value: Fast <1 ns response and low VC preserve signal integrity while meeting ISO 7637-2 Pulse 1/2a immunity requirements. | Use Scenario: Protecting PoE-powered Ethernet switch PHY bias supplies from Ethernet cable ESD events. IC Role / Device Role / Timing Role: Secondary clamping device after primary common-mode choke, referenced to local ground plane. Use Value: AEC-Q101 qualification and 150 °C TJ rating support reliable operation in thermally constrained telecom chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J11A-E3/5A | Commercial grade (non-AEC-Q101); same electrical specs and DO-214AC package | Lacks automotive qualification; not suitable for production automotive ECUs or ADAS modules | Select SMA5J11HE3/5A for automotive programs; use SMA5J11A-E3/5A only for industrial prototypes or cost-sensitive non-automotive designs |
| SMA6J11A-QH | Same AEC-Q101 qualification; higher 600 W PPPM rating; identical VWM/VC but larger DO-214AB (SMB) package | Requires PCB layout change due to larger footprint and 1.5× higher surge capacity | Choose SMA6J11A-QH only when 600 W surge margin is required and board space allows SMB footprint |
Compared with SMA5J11A-E3/5A, the SMA5J11HE3/5A adds AEC-Q101 validation for automotive use without changing electrical performance; compared with SMA6J11A-QH, it trades 100 W lower PPPM for smaller SMA footprint and direct drop-in replacement on existing layouts.
Availability
SMA5J11HE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.
Supply support for SMA5J11HE3/5A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade solutions.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, high-power-density transient suppression in space-constrained automotive and industrial power systems.
FAQ
What is the polarity configuration of the SMA5J11HE3/5A?
The SMA5J11HE3/5A is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage. The cathode is marked by a band on the DO-214AC package body. This polarity ensures it blocks normal 11 V DC operation while clamping positive transients to ground - a configuration essential for protecting automotive 12 V power inputs where negative-going transients are not expected.
Does the SMA5J11HE3/5A meet automotive qualification standards?
Yes, the SMA5J11HE3/5A is explicitly AEC-Q101 qualified, as confirmed in Vishay's official datasheet (Document Number: 88875, Revision: 24-Oct-12). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating its suitability for under-hood and powertrain applications where the SMA5J11HE3/5A serves as primary surge protection.
What is the maximum clamping voltage of the SMA5J11HE3/5A during a surge event?
The SMA5J11HE3/5A has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 27.5 A, tested with a 10/1000 µs waveform. This value is guaranteed across production lots and represents the highest voltage the protected circuit will experience during a worst-case surge - a critical parameter for ensuring downstream components like 16 V-rated LDOs or microcontroller I/O remain within safe operating limits.
Can the SMA5J11HE3/5A be used in bi-directional applications?
No, the SMA5J11HE3/5A is strictly unidirectional. Bi-directional variants in the same family carry the "CA" suffix (e.g., SMA5J11CA). Using the SMA5J11HE3/5A in a bi-directional configuration would result in forward conduction during negative transients, potentially causing failure or incorrect clamping behavior. Always verify polarity marking and suffix before design-in.
What packaging format does the SMA5J11HE3/5A ship in?
The SMA5J11HE3/5A ships in 13-inch diameter plastic tape and reel format, with a base quantity of 7500 units per reel (ordering code suffix "/5A"). This packaging supports high-speed automated pick-and-place assembly and complies with EIA-481 standards. The HE3 suffix indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance for enhanced reliability in vibration-prone environments.
SMA5J11HE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 24.9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11HE3/5A FAQ
1.How can I place an order for SMA5J11HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11HE3/5A 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 SMA5J11HE3/5A reliable?
The price and inventory of SMA5J11HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J11HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11HE3/5A?
SMA5J11HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11HE3/5A 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 SMA5J11HE3/5A?
For technical support, including SMA5J11HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11HE3/5A requirements.
6.How does Aetrix verify that SMA5J11HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J11HE3/5A 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 SMA5J11HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J11HE3/5A?
All SMA5J11HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11HE3/5A, 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 SMA5J11HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J11HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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