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Vishay General Semiconductor - Diodes Division SMA5J11A-E3/5A
- Part No.:
- SMA5J11A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11A-E3/5A.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
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Product details
Overview
SMA5J11A-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J11A-E3/5A datasheet, SMA5J11A-E3/5A pinout, SMA5J11A-E3/5A application, or SMA5J11A-E3/5A equivalent, key selection criteria include clamping performance under 27.5 A surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin-plated leads, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by transient overvoltage events, leveraging an avalanche breakdown mechanism. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling consistent clamping at 18.2 V during 10/1000 μs surges up to 27.5 A.
Designed for surface-mount use in space-constrained layouts, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 40 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation across -55 °C to +150 °C junction temperature range - critical for under-hood automotive and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit for protected circuit. |
| VBR (min/max) | 12.2 V / 13.5 V - guaranteed avalanche initiation range at 1 mA test current; ensures predictable turn-on timing across production lots. |
| VC @ IPPM | 18.2 V at 27.5 A - maximum clamped voltage during 500 W 10/1000 μs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPPM | 500 W - peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) when properly laid out. |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine); supports robustness against inductive switch-off transients in power rails. |
| Junction Temp Range | -55 °C to +150 °C - validated operating and storage range; suitable for under-hood automotive and industrial ambient conditions. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; reverse-biased during normal operation. |
| Cathode (banded end) | Clamping node / surge return path | Connected to higher-potential rail (e.g., VIN or signal line); conducts avalanche current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight clamping window (VC − VBR = ~5.7 V), minimizing stress on protected MOSFET gate oxides or IC input structures. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage (<1 μA at VWM), critical for battery-powered sensor nodes with low quiescent current budgets. |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns, eliminating bake requirements for high-volume SMT lines. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; this E3/5A variant is commercial-grade but shares identical die and package construction. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground, clamping surges above 13.5 V before they reach PMICs or microcontrollers. Use Value: Limits peak voltage to 18.2 V during 27.5 A transients, preventing latch-up or gate oxide failure in downstream 20 V-rated power switches. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point, shunting fast transients (<1 ns rise time) before reaching op-amp inputs or ADC front-ends. Use Value: Sub-20 V clamping preserves signal integrity in 3.3 V or 5 V sensor signal chains where input protection diodes alone cannot handle >500 W surges. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges on DC output lines. IC Role / Device Role / Timing Role: Unidirectional clamp on +VOUT rail, referenced to common ground, absorbing energy from coupled transients. Use Value: 500 W rating allows compliance with UL 62368-1 surge withstand requirements without derating at elevated ambient temperatures. | Use Scenario: Primary protection for Ethernet PHY power pins (e.g., 3.3 V bias supply) in PoE-powered network equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC bias rail, coordinated with upstream GDT or polymer PTC for multi-stage protection. Use Value: 11 V VWM permits uninterrupted operation during nominal 3.3 V/5 V/12 V rail tolerances while clamping >13.5 V faults within 1 ns response time. |
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-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package; same thermal resistance (RθJA = 80 °C/W). | No functional difference; selected when halogen-free material compliance is required for final product certification (e.g., IEC 61249-2-21). | Choose SMA5J11A-M3/5A if halogen-free bill-of-materials is mandated; otherwise SMA5J11A-E3/5A satisfies standard commercial RoHS requirements. |
| SMA6J11A-E3/5A | 600 W peak pulse power rating (vs. 500 W), same VWM/VBR/VC, identical SMA package and pinout; higher IPPM (33.3 A vs. 27.5 A). | Provides extended surge margin for designs targeting IEC 61000-4-5 Level 5 (6 kV/2 Ω) or repeated surge exposure in harsh environments. | Select SMA6J11A-E3/5A when system-level surge testing requires >500 W headroom; SMA5J11A-E3/5A remains optimal for cost-sensitive Level 4-compliant designs. |
Compared with SMA5J11A-M3/5A, the SMA5J11A-E3/5A offers identical protection performance with standard RoHS compliance; versus SMA6J11A-E3/5A, it trades 100 W pulse power for lower unit cost and proven fit in legacy 500 W-design layouts - making it the preferred choice for volume automotive body electronics and industrial PLC I/O modules.
Availability
SMA5J11A-E3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer power adapter input stage designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J11A-E3/5A 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 reliability, power density, and AEC-Q qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained SMT applications - targeting automotive, industrial, and telecom systems where 500 W surge handling and MSL Level 1 reflow compatibility are mandatory.
FAQ
What is the clamping voltage of the SMA5J11A-E3/5A under maximum rated surge current?
The SMA5J11A-E3/5A clamps to 18.2 V when subjected to its maximum peak pulse current of 27.5 A using the standardized 10/1000 μs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and represents the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMA5J11A-E3/5A suitable for automotive applications?
The SMA5J11A-E3/5A is commercial-grade and RoHS-compliant, but not AEC-Q101 qualified. For automotive use, Vishay offers the SMA5J11AHE3_A variant (with HE3 suffix), which shares identical electrical characteristics and SMA package but undergoes additional stress testing per AEC-Q101. The SMA5J11A-E3/5A may be used in non-safety-critical automotive subsystems where qualification is not mandated.
What does the "E3/5A" suffix indicate in SMA5J11A-E3/5A?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5A" specifies packaging in 13-inch diameter plastic tape and reel containing 7500 units. This format supports high-speed pick-and-place assembly and is compatible with standard SMT feeders - distinct from the "61" code (7-inch reel, 1800 units) used in lower-volume prototyping.
How does the SMA5J11A-E3/5A compare to bidirectional TVS diodes like SMA5J11CA?
The SMA5J11A-E3/5A is unidirectional and includes a cathode band for polarity identification, whereas SMA5J11CA is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional version provides lower leakage (<1 μA at 11 V) and is preferred for DC power rail protection; bidirectional types suit AC-coupled signal lines or floating buses where polarity reversal occurs.
What PCB layout practices maximize surge-handling performance of the SMA5J11A-E3/5A?
To achieve rated 500 W performance, the SMA5J11A-E3/5A must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with short, wide traces to ground or return path. Thermal relief should be minimized, and adjacent heat sinks or internal ground planes should be used to manage junction temperature rise - failure to follow layout guidelines reduces effective PPPM and increases clamping voltage beyond 18.2 V.
SMA5J11A-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11A-E3/5A FAQ
1.How can I place an order for SMA5J11A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11A-E3/5A 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 SMA5J11A-E3/5A reliable?
The price and inventory of SMA5J11A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J11A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11A-E3/5A?
SMA5J11A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11A-E3/5A 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 SMA5J11A-E3/5A?
For technical support, including SMA5J11A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11A-E3/5A requirements.
6.How does Aetrix verify that SMA5J11A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J11A-E3/5A 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 SMA5J11A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J11A-E3/5A?
All SMA5J11A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11A-E3/5A, 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 SMA5J11A-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J11A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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