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Vishay General Semiconductor - Diodes Division SMA6J11A-M3/5A
- Part No.:
- SMA6J11A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J11A-M3/5A.pdf
- Description:
- TVS DIODE 11VWM 17.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J11A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR at 1 mA), 17.2 V maximum clamping voltage at 34.8 A (10/1000 μs), 600 W peak pulse power rating, and operates from –55 °C to +150 °C junction temperature.
For engineers reviewing the SMA6J11A-M3/5A datasheet, SMA6J11A-M3/5A pinout, SMA6J11A-M3/5A application, or SMA6J11A-M3/5A equivalent, this page delivers verified electrical parameters, thermal resistance (RθJA = 120 °C/W), polarity marking (cathode band), JEDEC-compliant MSL level 1 handling, and halogen-free RoHS compliance per Vishay Doc. 89460 Rev. 09-Jan-2024.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range. Its low dynamic resistance (RD = 0.107 Ω) ensures tight clamping during transient events, while its 120 °C/W junction-to-ambient thermal resistance defines PCB pad layout requirements for sustained 4 W power dissipation at TA = 50 °C.
The device complies with J-STD-020 MSL level 1 and withstands 260 °C lead-free reflow. Its matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 solder joint reliability standards, and it passes JESD 201 class 2 whisker testing - confirming suitability for industrial-grade automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets upper limit for normal circuit operation. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed avalanche onset range; used to calculate worst-case clamping via VC = RD × IPP + VBRmax. |
| VC at IPP | 17.2 V at 34.8 A (10/1000 μs) - Measured clamping voltage under standard surge; determines protected IC's maximum transient exposure. |
| PPPM (10×1000 μs) | 600 W - Peak transient energy absorption capability; defines survivability against common inductive-switching surges. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; requires ≥5.0 mm × 5.0 mm copper pads per terminal for rated PD = 4 W at TA = 50 °C. |
| Polarity | Unidirectional - Cathode marked by color band; conducts only in forward direction, blocks reverse surges above VWM. |
| IFSM | 50 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against accidental forward faults. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL level 1, 260 °C peak reflow. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side of protected line; completes clamping path during reverse overvoltage events. |
| Cathode | Clamping node / surge sink | Marked by color band; tied to higher-potential rail (e.g., VCC or signal high); absorbs and shunts transient energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment (0.208" × 0.157" footprint). |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills IEC 61249-2-21 and JEDEC J-STD-609A Class 1 requirements for environmentally constrained industrial applications. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow; supports direct placement from sealed tape-and-reel (13" diameter, 7500 pcs). |
| 150 °C max junction temperature | Supports operation in under-hood automotive modules, industrial motor drives, and enclosed power supplies without derating at full ambient. |
| 0.107 Ω dynamic resistance (RD) | Minimizes clamping voltage rise under high di/dt transients, improving protection margin for 3.3 V and 5 V logic interfaces. |
Applications
| Industrial Motor Drive Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Suppresses inductive kickback from relay coils and solenoid drivers in PLC output stages. IC Role / Device Role / Timing Role: Unidirectional TVS placed across coil terminals to clamp reverse EMF spikes up to 600 W. Use Value: Prevents MOSFET gate oxide damage and microcontroller reset events caused by >100 V transients at 34.8 A peak current. |
Use Scenario: Protects LIN bus transceivers and microcontroller I/O pins from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V supply rail and bidirectional signal lines. Use Value: Maintains 11 V system integrity during ISO 7637-2 Pulse 1/2a events; clamps to ≤17.2 V within 1 ns response time. |
| Consumer Power Adapter Input Stage | Telecom Ethernet PHY Interface |
Use Scenario: Shields AC-DC converter primary-side controllers and optocouplers from mains-borne surges. IC Role / Device Role / Timing Role: Primary-side transient suppressor between bridge rectifier output and bulk capacitor. Use Value: Absorbs 600 W (10/1000 μs) surges without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth). |
Use Scenario: Guards RJ45 magnetics secondary side and PHY transceiver ESD pins against lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side unidirectional TVS on differential pair supply rails (e.g., VDDIO). Use Value: Limits clamping to 17.2 V at 34.8 A, preserving signal integrity for 100BASE-TX eye diagram compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ11A | Same VWM (11 V), identical SMA package, but higher RθJA (135 °C/W) and lower PPPM (400 W @ 10/1000 μs). | Requires larger copper area for equivalent thermal performance; not suitable for 600 W surge environments. | Select SMA6J11A-M3/5A when 600 W surge immunity and 120 °C/W thermal resistance are required. |
| ON Semiconductor 1.5SMC11A | Same VWM and VBR range, but DO-214AB (SMB) package - 2.5 mm wider, incompatible with SMA footprints. | PCB redesign needed; not drop-in; higher profile may conflict with enclosure clearance. | Choose SMA6J11A-M3/5A for space-constrained designs requiring DO-214AC mechanical fit and halogen-free compliance. |
Compared with SMAJ11A and 1.5SMC11A, the SMA6J11A-M3/5A delivers superior 600 W surge rating in the smallest standardized SMA outline, with verified 120 °C/W thermal resistance and halogen-free construction - making it optimal for high-reliability industrial and automotive PCBs where layout density and environmental compliance are critical.
Availability
SMA6J11A-M3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer power adapters, and telecom Ethernet PHY interfaces requiring stable component supply, long-term lifecycle support, and halogen-free RoHS compliance.
Supply support for SMA6J11A-M3/5A 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and industrial-grade qualification.
The SMA6JxxA series is part of Vishay's Transient Voltage Suppressor family, engineered specifically for high-energy surge suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where consistent clamping performance and thermal stability are mandatory.
FAQ
What is the maximum clamping voltage of the SMA6J11A-M3/5A under a 10/1000 μs surge?
The SMA6J11A-M3/5A has a maximum clamping voltage (VC) of 17.2 V when subjected to a 10/1000 μs waveform at 34.8 A peak pulse current. This value is measured per Vishay Doc. 89460 and reflects worst-case clamping behavior under standardized surge conditions. The SMA6J11A-M3/5A achieves this with a dynamic resistance of 0.107 Ω, ensuring predictable voltage limiting for downstream ICs.
Does the SMA6J11A-M3/5A support lead-free reflow soldering?
Yes, the SMA6J11A-M3/5A is qualified for lead-free reflow with a maximum peak temperature of 260 °C and meets J-STD-020 MSL level 1. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the device passes JESD 201 class 2 whisker testing - confirming robust solder joint integrity in automated assembly processes for the SMA6J11A-M3/5A.
How does the M3 suffix differ from E3 in SMA6J11A-M3/5A?
The M3 suffix indicates halogen-free, RoHS-compliant construction meeting IEC 61249-2-21 and JEDEC J-STD-609A Class 1, whereas E3 denotes standard RoHS compliance without halogen-free assurance. Both share identical electrical specs and SMA (DO-214AC) packaging, but SMA6J11A-M3/5A is specified for environmentally regulated industrial and automotive applications where brominated flame retardants are prohibited.
What is the thermal resistance and recommended PCB layout for the SMA6J11A-M3/5A?
The SMA6J11A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. Vishay specifies mounting on 5.0 mm × 5.0 mm copper pads per terminal to achieve rated 4 W power dissipation at TA = 50 °C. Reducing pad size increases thermal impedance and requires derating - confirmed in Fig. 2 of the SMA6J11A-M3/5A datasheet (Doc. 89460).
Is the SMA6J11A-M3/5A suitable for bidirectional transient suppression?
No, the SMA6J11A-M3/5A is unidirectional only, as explicitly stated in the Vishay datasheet. It clamps reverse overvoltage events above VWM but conducts forward current like a standard diode. For bidirectional protection, a separate SMA6J11CA (center-tapped, bidirectional) or dual-diode configuration is required - the SMA6J11A-M3/5A does not provide symmetrical clamping.
SMA6J11A-M3/5A 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:
- 17.2V
- Current - Peak Pulse (10/1000µs):
- 34.8A
- Power - Peak Pulse:
- 600W
- 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)
SMA6J11A-M3/5A FAQ
1.How can I place an order for SMA6J11A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J11A-M3/5A 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 SMA6J11A-M3/5A reliable?
The price and inventory of SMA6J11A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J11A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J11A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J11A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J11A-M3/5A?
SMA6J11A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J11A-M3/5A 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 SMA6J11A-M3/5A?
For technical support, including SMA6J11A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J11A-M3/5A requirements.
6.How does Aetrix verify that SMA6J11A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J11A-M3/5A 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 SMA6J11A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J11A-M3/5A?
All SMA6J11A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J11A-M3/5A, 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 SMA6J11A-M3/5A part is unused and in its original packaging.
Return procedure for SMA6J11A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J11A-M3/5A Tags
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