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Vishay General Semiconductor - Diodes Division SMBJ11-E3/5B
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- Part No.:
- SMBJ11-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11-E3/5B.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,544
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Product details
Overview
SMBJ11-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) 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, 18.2 V maximum clamping voltage (VC) at 33 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ11-E3/5B datasheet, SMBJ11-E3/5B pinout, SMBJ11-E3/5B application, or SMBJ11-E3/5B equivalent, key selection criteria include unidirectional polarity, 18.2 V clamping performance at 33 A, RoHS-compliant matte tin-plated leads, 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 fast-acting shunt protector: under normal bias it presents high impedance (>1 MΩ leakage at 11 V), but triggers into low-impedance conduction when transient voltage exceeds its 12.2 V minimum breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance.
Thermal design relies on its RθJA of 100 °C/W (on recommended pad layout) and RθJL of 20 °C/W, enabling reliable operation up to TJ = 150 °C. The device meets JESD201 Class 2 whisker resistance and UL 497B recognition for surge protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed breakdown range ensuring predictable turn-on during transients |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage seen by protected circuit during 600 W 10/1000 µs surge; limits stress on downstream components |
| PPPM | 600 W - Peak pulse power handling capability with 0.01% duty cycle; supports repetitive ESD and lightning-induced surges |
| IFSM | 100 A - Non-repetitive 8.3 ms half-sine surge current rating; validates robustness against inductive switch-off events |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient industrial environments without derating |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with cathode band marking; compatible with IPC-7351B footprint |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference plane; completes clamping loop during overvoltage events |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 12 V rail or RS-485 signal); blocks normal operation, conducts during surge |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating on standard PCB pads |
| 18.2 V clamping voltage at 33 A | Keeps protected ICs (e.g., 16 V-rated gate drivers) within safe absolute maximum ratings during worst-case transients |
| Glass passivated junction | Ensures ±5% VBR tolerance and <0.1%/°C temperature coefficient - critical for stable clamping across -55°C to +150°C |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow assembly without preconditioning or special handling |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020; suitable for global industrial and telecom deployments |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Signal Lines |
|---|---|
|
Use Scenario: Suppresses load-dump and alternator ripple transients on 12 V input rails feeding DC-DC converters. IC Role / Device Role / Timing Role: Shunt TVS placed between VIN and GND, triggered within <1 ns to clamp spikes above 13.5 V. Use Value: Prevents damage to upstream rectifiers and downstream buck controllers by limiting transient voltage to ≤18.2 V at 33 A. |
Use Scenario: Protects LIN bus transceivers and microcontroller GPIOs from ESD and inductive switching noise in door modules. IC Role / Device Role / Timing Role: Unidirectional clamping element on LIN data line, referenced to vehicle chassis ground. Use Value: Maintains signal integrity under ISO 10605 30 kV contact discharge by clamping with <1 ns response and low capacitance (<100 pF). |
| Telecom DSL Line Card Surge Protection | Consumer Appliance Motor Drive Gate Protection |
|
Use Scenario: Guards ADSL/VDSL line interface ICs against lightning-induced surges entering via RJ-11 jacks. IC Role / Device Role / Timing Role: Primary-level TVS on tip/ring lines, coordinated with gas discharge tubes and series impedance. Use Value: Absorbs 600 W surges per line while holding clamped voltage below 18.2 V - preserving PHY IC reliability per GR-1089-CORE. |
Use Scenario: Shields N-channel MOSFET gates from Miller-induced voltage spikes during BLDC motor commutation. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS connected between gate and source terminals. Use Value: Limits gate-source voltage to ≤18.2 V during dv/dt events, preventing oxide breakdown and ensuring >100,000-cycle FET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-E3/5B | Same electrical specs and package; identical marking code "KZ" and VBR range (12.2–13.5 V) | No functional difference; alternate ordering format per Vishay's preferred P/N system | Select SMBJ11A-E3/5B if aligning with Vishay's standardized base part numbering convention |
| SMCJ11A-E3/57T | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs | Used where higher surge repetition or board-level coordination with secondary protectors is required | Choose SMCJ11A-E3/57T only when 600 W is insufficient and PCB space allows larger footprint |
Compared with SMBJ11-E3/5B, SMBJ11A-E3/5B offers identical protection performance in the same SMB package, while SMCJ11A-E3/57T trades compact size for 2.5× higher pulse power - making SMBJ11-E3/5B optimal for space-constrained 600 W surge requirements.
Availability
SMBJ11-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom line cards, and consumer appliance motor drives requiring stable component supply and full traceability.
Supply support for SMBJ11-E3/5B 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, and protection devices with emphasis on reliability, precision, and automotive qualification.
The SMBJ series was engineered for high-reliability transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure equipment where consistent clamping and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ11-E3/5B at its rated peak pulse current?
The SMBJ11-E3/5B has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 33 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ11-E3/5B maintains this clamping performance due to its low incremental surge resistance and glass-passivated junction structure.
Is SMBJ11-E3/5B suitable for automotive applications?
SMBJ11-E3/5B is a commercial-grade RoHS-compliant part (E3 suffix) and not AEC-Q101 qualified. For automotive use, Vishay specifies the HE3 variant (e.g., SMBJ11HE3_B/I). While SMBJ11-E3/5B may function in non-safety-critical automotive environments, it lacks the extended temperature validation, accelerated life testing, and failure mode documentation required for qualified automotive ECUs. Always specify SMBJ11HE3_B/I for BCM or infotainment systems.
What does the "-E3/5B" suffix indicate in SMBJ11-E3/5B?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards. The "/5B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-volume SMT assembly and is distinct from the /52 variant (7-inch reel, 750 units), both sharing identical electrical and thermal specifications.
How does SMBJ11-E3/5B compare to bidirectional TVS diodes like SMBJ11CA?
SMBJ11-E3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., +12 V rail to GND), offering lower leakage and tighter VBR tolerance. SMBJ11CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485 differential pairs), with symmetrical clamping in both directions. They share identical VWM, VC, and PPPM, but SMBJ11-E3/5B cannot replace SMBJ11CA in AC-coupled applications without circuit redesign.
What PCB layout guidance applies to SMBJ11-E3/5B for optimal thermal and surge performance?
For optimal performance, mount SMBJ11-E3/5B on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2. Minimize trace length between the TVS and protected node, use solid ground planes, and avoid thermal reliefs on cathode/anode pads to maintain RθJA ≤100 °C/W. Do not route high-speed signals near the device to prevent coupling; the SMBJ11-E3/5B's low junction capacitance (<100 pF) supports clean signal-line integration when layout rules are followed.
SMBJ11-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 29.9A
- 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-214AA (SMBJ)
SMBJ11-E3/5B FAQ
1.How can I place an order for SMBJ11-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11-E3/5B 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 SMBJ11-E3/5B reliable?
The price and inventory of SMBJ11-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11-E3/5B?
SMBJ11-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11-E3/5B 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 SMBJ11-E3/5B?
For technical support, including SMBJ11-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11-E3/5B requirements.
6.How does Aetrix verify that SMBJ11-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11-E3/5B 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 SMBJ11-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11-E3/5B?
All SMBJ11-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11-E3/5B, 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 SMBJ11-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ11-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11-E3/5B Tags
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