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Vishay General Semiconductor - Diodes Division SMA5J11A-E3/61
- Part No.:
- SMA5J11A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11A-E3/61.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,800
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Product details
Overview
SMA5J11A-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V maximum clamping voltage (VC) at 27.5 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMA5J11A-E3/61 datasheet, SMA5J11A-E3/61 pinout, SMA5J11A-E3/61 application, or SMA5J11A-E3/61 equivalent, key selection criteria include verified 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-clamped shunt protector: when reverse voltage exceeds VBR (12.2–13.5 V), it avalanches to limit transient energy, clamping to ≤18.2 V at 27.5 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 11 V) and fast response (<1 ns), critical for safeguarding MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Thermally, it sustains operation from –55 °C to +150 °C junction temperature, with RθJA = 80 °C/W and RθJL = 25 °C/W. The SMA package supports MSL Level 1 handling (260 °C peak reflow), and the E3/61 variant is RoHS-compliant, commercial-grade, supplied in 7" tape-and-reel (1800 pcs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Verified avalanche initiation range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 18.2 V at 27.5 A (10/1000 μs) - Clamped voltage during worst-case surge; must stay below IC absolute maximum ratings. |
| PPPM | 500 W - Peak transient power dissipation capability; determines survivability against lightning or load-dump transients. |
| ID @ VWM | ≤1.0 μA - Reverse leakage at stand-off voltage; low value prevents unnecessary power drain in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.28 mm × 4.50 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002, cathode indicated by a band at one end. Dimensions: 5.28 mm × 4.50 mm × 2.29 mm (L × W × H); recommended pad layout: 5.0 mm × 5.0 mm copper per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional configuration. | Enables low-VF conduction path during forward surges; not used in typical reverse-biased TVS operation. |
| Cathode (banded end) | Protected line connection point in reverse-bias protection topology. | Reverse voltage applied here triggers avalanche clamping; band provides unambiguous orientation for automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast transients, improving clamping precision beyond VC spec. |
| Glass passivated chip junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 rating (260 °C peak) | Supports single-reflow assembly without moisture-induced popcorning; eliminates pre-bake requirement. |
| AEC-Q101 qualified variants available | HE3/HM3 suffix versions meet automotive stress test requirements; SMA5J11A-E3/61 is commercial-grade only. |
| Automated placement optimized | Standardized SMA geometry and lead coplanarity enable >99.9% placement yield in high-speed SMT lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against ISO 7637-2 load dump transients up to 60 V. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, clamping surges within 1 ns. Use Value: Limits rail voltage to ≤18.2 V during 27.5 A surge, preventing damage to downstream LDOs and MCU power domains. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though SMA5J11A-E3/61 is unidirectional, used with series impedance for signal line clamp). Use Value: Maintains signal integrity by suppressing ±1 kV ESD events while adding <1 pF junction capacitance at 0 V bias. |
| Consumer Power Adapter Input Stage | Telecom Ethernet PHY Interface Protection |
|
Use Scenario: Secondary-side DC output protection in wall adapters supplying USB-C PD controllers and PMICs. IC Role / Device Role / Timing Role: Unidirectional TVS tied between +5 V/9 V/15 V output and GND, triggered only on overvoltage faults. Use Value: Withstands repetitive 500 W surges without degradation, ensuring adapter compliance with IEC 61000-4-5 Level 3. |
Use Scenario: Front-end protection of 10/100BASE-TX Ethernet PHY differential pairs against induced lightning surges. IC Role / Device Role / Timing Role: Discrete TVS pair (one per line) placed after common-mode choke, referenced to local ground plane. Use Value: Delivers 18.2 V clamping at 27.5 A while maintaining <0.5 Ω dynamic impedance, minimizing data distortion during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/61 | Lower PPPM (400 W vs. 500 W); same VWM/VBR/VC; identical SMA package and RoHS compliance. | Less suitable for high-energy transients like automotive load dump; adequate for consumer-grade ESD and switching noise. | Select SMAJ11A-E3/61 where system-level surge testing does not exceed 400 W pulse energy. |
| SMBJ11A-E3/61 | Same electrical specs but SMB (DO-214AA) package - 5.28 mm × 4.50 mm footprint same width, but 3.99 mm length vs. SMA's 4.50 mm; higher thermal mass. | Better thermal dissipation in high-duty-cycle environments; requires PCB layout revision due to different body length and pad spacing. | Choose SMBJ11A-E3/61 when board space allows longer footprint and enhanced thermal performance is prioritized over compactness. |
Compared with SMA5J11A-E3/61, SMAJ11A-E3/61 offers lower surge capacity but identical voltage parameters and fit, while SMBJ11A-E3/61 trades package size for improved thermal handling - both require validation of clamping behavior under actual system-level transients.
Availability
SMA5J11A-E3/61 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J11A-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, TVS devices, and optoelectronics with emphasis on reliability, power density, and AEC-Q qualification.
The SMA5J family is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems where 500 W surge handling and precise clamping are mandatory.
FAQ
What is the maximum clamping voltage of the SMA5J11A-E3/61 under a 10/1000 μs surge?
The SMA5J11A-E3/61 clamps to a maximum 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 surge events. Designers must ensure all downstream components tolerate this clamped voltage at the specified current level.
Is the SMA5J11A-E3/61 suitable for bidirectional transient protection?
No, the SMA5J11A-E3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias above VBR and blocks forward current up to its rated IFSM (40 A). For bidirectional protection, Vishay specifies the "CA" suffix variant (e.g., SMA5J11CA), which has symmetrical breakdown in both directions and no polarity marking.
What does the "E3/61" suffix indicate in SMA5J11A-E3/61?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "61" specifies the preferred packaging code - 7-inch diameter plastic tape-and-reel containing 1800 units. This format ensures compatibility with standard SMT pick-and-place equipment and supports automated manufacturing without manual handling.
How does the thermal resistance of the SMA5J11A-E3/61 affect PCB layout?
The SMA5J11A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under 500 W pulses, designers must provide adequate copper area and avoid excessive trace length or isolation - undersized pads increase thermal impedance and risk premature failure during repeated surges.
Can the SMA5J11A-E3/61 replace the SMAJ11A-E3/61 in an existing design?
The SMA5J11A-E3/61 can physically and electrically replace SMAJ11A-E3/61 due to identical SMA package, pinout, VWM, VBR, and VC specifications - but it delivers 25 % higher peak pulse power (500 W vs. 400 W). No PCB changes are required; however, system-level surge testing should confirm whether the higher energy rating introduces unintended interaction with upstream current-limiting elements.
SMA5J11A-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:
- 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-E3/61 FAQ
1.How can I place an order for SMA5J11A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11A-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 SMA5J11A-E3/61 reliable?
The price and inventory of SMA5J11A-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 SMA5J11A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J11A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11A-E3/61?
SMA5J11A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11A-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 SMA5J11A-E3/61?
For technical support, including SMA5J11A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11A-E3/61 requirements.
6.How does Aetrix verify that SMA5J11A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J11A-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 SMA5J11A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J11A-E3/61?
All SMA5J11A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11A-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 SMA5J11A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J11A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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