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Vishay General Semiconductor - Diodes Division SMA5J11-E3/61
- Part No.:
- SMA5J11-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11-E3/61.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,556
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Product details
Overview
SMA5J11-E3/61 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 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 in automotive engine control units to protect microcontrollers from load dump transients.
For engineers reviewing the SMA5J11-E3/61 datasheet, SMA5J11-E3/61 pinout, SMA5J11-E3/61 application, or SMA5J11-E3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and thermal resistance of 80 °C/W junction-to-ambient under standard pad layout.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 11 V, it avalanches at VBR (min 12.2 V, max 13.5 V @ 1 mA), limiting transient energy by diverting surge current to ground. Its low incremental surge resistance ensures stable clamping at VC = 18.2 V under 27.5 A (10/1000 µs).
Designed for surface-mount automated placement, it uses glass-passivated silicon junctions and meets J-STD-020 reflow profile (peak 260 °C). The DO-214AC case provides UL 94 V-0 flammability rating and supports 40 A non-repetitive forward surge (IFSM) - critical for handling inductive kickback in automotive power circuits.
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 @ 1 mA - guaranteed avalanche initiation range under standardized test current |
| VC @ IPPM | 18.2 V @ 27.5 A - clamped voltage during 500 W transient, defining protected circuit's maximum overvoltage |
| PPPM | 500 W - peak pulse power handling capability with 10/1000 µs waveform, per ANSI/IEEE C62.35 |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 80 °C/W - thermal resistance from junction to ambient on 5.0 mm × 5.0 mm copper pads, guiding PCB thermal design |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads, cathode band marking on one end, dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), UL 94 V-0 rated, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line (e.g., 12 V rail); conducts during positive transients in uni-directional configuration |
| Cathode (banded end) | Reverse-biased reference / Clamping node | Connected to ground; avalanches when reverse voltage exceeds VWM, shunting surge current to earth |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive-grade temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| Low-profile DO-214AC package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 rating | Permits unlimited floor life and exposure to reflow soldering without baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control modules (ECMs) against ISO 7637-2 Pulse 5a load dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and local regulator input, conducting only during overvoltage events. Use Value: Limits voltage seen by downstream LDOs and MCUs to ≤18.2 V, preventing latch-up or permanent damage during 500 W surges. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Shunt protector mounted across sensor output and ground, activated by ESD or cable-induced transients. Use Value: Clamps fast-rising transients (<1 ns rise time) to <18.2 V while maintaining <1 µA leakage at 11 V, preserving signal integrity. |
| Consumer Power Adapter Input Protection | Telecom DC Feeder Line Protection |
Use Scenario: Front-end surge suppression in universal AC/DC adapters for laptops and monitors exposed to mains-borne transients. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output (e.g., +19 V rail), coordinated with fuse and MOV. Use Value: Absorbs 500 W surges without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity testing. | Use Scenario: Overvoltage protection on -48 V DC feeder lines feeding remote radio units in 4G/5G base stations. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to system ground, protecting PoE-like DC distribution circuitry. Use Value: Withstands repetitive lightning-induced surges due to low incremental resistance and 150 °C TJ rating, ensuring uptime in outdoor telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J11AHE3/61 | AEC-Q101 qualified variant with identical electrical specs; differs only in whisker test class (JESD 201 Class 2 vs. Class 1A) | Required for automotive safety-critical subsystems demanding enhanced metallurgical reliability | Select SMA5J11AHE3/61 when AEC-Q101 full qualification documentation (e.g., PPAP) is mandated |
| SMC5J11A-E3/73 | Same VWM/VC but in larger DO-214AB (SMC) package; higher thermal mass (RθJA = 35 °C/W) and 600 W PPPM | Better suited for high-repetition-rate surges or elevated ambient temperatures (>85 °C) | Choose SMC5J11A-E3/73 when board space allows and thermal derating margin is insufficient with SMA package |
Compared with SMA5J11-E3/61, SMA5J11AHE3/61 adds formal AEC-Q101 certification for automotive use cases, while SMC5J11A-E3/73 trades footprint size for superior thermal performance and higher surge endurance - both require no circuit redesign but differ in qualification scope and thermal management headroom.
Availability
SMA5J11-E3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power systems requiring stable component supply, RoHS compliance, and AEC-Q101-aligned quality assurance.
Supply support for SMA5J11-E3/61 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 automotive-grade validation.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where robustness against ISO 7637, IEC 61000-4-5, and ESD events is mandatory.
FAQ
What is the polarity configuration of the SMA5J11-E3/61?
The SMA5J11-E3/61 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the DO-214AC package body, and it conducts only when the anode is more negative than the cathode - making it suitable for DC rail protection where polarity is fixed. This differs from bi-directional variants (e.g., SMA5J11CA) that lack polarity marking and suppress surges in both directions.
Does the SMA5J11-E3/61 meet automotive qualification standards?
Yes, the SMA5J11-E3/61 is RoHS-compliant and AEC-Q101 qualified, as confirmed in Vishay's official datasheet (Document Number 88875, Revision 24-Oct-12). It undergoes stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 requirements - validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of the SMA5J11-E3/61 under surge conditions?
The SMA5J11-E3/61 has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current of 27.5 A with a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events.
Can the SMA5J11-E3/61 be used in place of a bi-directional TVS like SMA5J11CA?
No - the SMA5J11-E3/61 is unidirectional and must not replace bi-directional types such as SMA5J11CA without circuit redesign. Using SMA5J11-E3/61 in AC-coupled or polarity-agnostic signal paths risks failure during reverse-polarity transients, as it lacks conduction capability in the forward direction beyond its VF (~3.5 V @ 25 A).
What is the thermal resistance specification for the SMA5J11-E3/61?
The SMA5J11-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test board conditions and guides PCB layout decisions - larger copper areas or internal planes can reduce effective RθJA and improve surge survivability.
SMA5J11-E3/61 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11-E3/61 FAQ
1.How can I place an order for SMA5J11-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11-E3/61 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 SMA5J11-E3/61 reliable?
The price and inventory of SMA5J11-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J11-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11-E3/61?
SMA5J11-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11-E3/61 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 SMA5J11-E3/61?
For technical support, including SMA5J11-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11-E3/61 requirements.
6.How does Aetrix verify that SMA5J11-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J11-E3/61 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 SMA5J11-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J11-E3/61?
All SMA5J11-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11-E3/61, 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 SMA5J11-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J11-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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