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Vishay General Semiconductor - Diodes Division SMBJ11A-E3/5B
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- Part No.:
- SMBJ11A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11A-E3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ11A-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.
For engineers reviewing the SMBJ11A-E3/5B datasheet, SMBJ11A-E3/5B pinout, SMBJ11A-E3/5B application, or SMBJ11A-E3/5B equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by overvoltage events such as inductive load switching or ESD. Its glass-passivated junction ensures stable breakdown behavior, while low incremental surge resistance enables rapid energy diversion during transient surges.
The SMBJ11A-E3/5B is rated for 600 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, and supports repetitive surge handling when thermally managed via PCB copper pads (0.2" × 0.2"). Its MSL Level 1 rating confirms suitability for standard reflow without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on within specified tolerance. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage during 600 W transient; limits stress on downstream components like microcontrollers or gate drivers. |
| IPPM | 33 A - Peak pulse current capability with 10/1000 µs waveform; determines survivability against defined surge profiles. |
| PPPM | 600 W - Peak pulse power rating; sets energy-handling capacity for transient suppression per IEC 61000-4-5 Level 3/4. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in high-ambient environments like motor drives or power converters. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs required PCB copper area for thermal management under sustained pulses. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | When clamping occurs, conducts surge current from cathode to anode; must be routed to ground or return path with low-inductance layout. |
| Cathode | Current exit terminal in forward bias; marked with band on package body. | Connected to the line being protected (e.g., 12 V rail); reverse-biased during normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events up to Level 4 without derating in typical PCB layouts. |
| 18.2 V clamping voltage at 33 A | Keeps protected ICs (e.g., logic-level MOSFET gates or MCU I/O) below absolute maximum ratings during transients. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage performance across temperature and lifetime cycling. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without baking or special handling, reducing manufacturing complexity. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance requirements while maintaining cost-effective commercial qualification. |
Applications
| Industrial Motor Drive Power Stage | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: Suppresses inductive kickback from relay coils and solenoid drivers in PLC output modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and ground to clamp flyback spikes before they reach driver ICs. Use Value: Prevents latch-up or permanent damage to half-bridge gate drivers by limiting transient voltage to ≤18.2 V at 33 A surge. |
Use Scenario: Protects LIN bus input pins and switch sense inputs in BCMs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V domain inputs, coordinated with upstream fuses and filtering. Use Value: Maintains system uptime by absorbing 600 W surges without degradation, meeting ISO 7637-2 Pulse 1/2a/3a immunity requirements. |
| Consumer Appliance Power Supply Input | Industrial Sensor Signal Conditioning Interface |
|
Use Scenario: Shields AC-DC converter primary-side control ICs from line surge and lightning-induced transients. IC Role / Device Role / Timing Role: Fast-response clamping diode across bulk capacitor or controller VCC rail. Use Value: Limits voltage overshoot to 18.2 V during 10/1000 µs surges, preventing premature failure of PWM controllers or optocouplers. |
Use Scenario: Guards analog front-end inputs of 4–20 mA transmitters and RTD interfaces against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF), low-leakage (≤1 µA) protection element on signal path to precision ADCs. Use Value: Preserves signal integrity with <1 µA leakage at 11 V, avoiding offset errors while delivering 600 W transient immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/5B | Bidirectional variant; symmetric VBR (12.2–13.5 V) in both polarities; no polarity marking. | Required where AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus) need symmetrical clamping. | Select SMBJ11CA-E3/5B only if bidirectional protection is needed; SMBJ11A-E3/5B is optimal for DC rails with defined ground reference. |
| SMCJ11A-E3/57T | Larger SMC (DO-214AB) package; higher PPPM = 1500 W; same VWM/VC specs but 79 A IPPM. | Suitable for higher-energy surge environments (e.g., outdoor telecom power inputs) where PCB space permits larger footprint. | Choose SMCJ11A-E3/57T when >600 W surge margin is required; SMBJ11A-E3/5B fits tighter layouts with adequate 600 W rating. |
Compared with SMBJ11CA-E3/5B, the SMBJ11A-E3/5B provides polarity-specific clamping ideal for DC power rails, while SMCJ11A-E3/57T offers greater surge headroom in a larger package - making SMBJ11A-E3/5B the optimal balance of size, rating, and cost for mid-power industrial and automotive electronics.
Availability
SMBJ11A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer appliance power supplies requiring stable component supply with full traceability and RoHS compliance.
Supply support for SMBJ11A-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 and application-specific performance.
The SMBJ series was developed for high-reliability transient suppression in compact SMT designs across automotive, industrial, and computing systems - prioritizing fast response, stable clamping, and manufacturability.
FAQ
What is the maximum clamping voltage of the SMBJ11A-E3/5B under surge conditions?
The SMBJ11A-E3/5B has a maximum clamping voltage (VC) of 18.2 V at 33 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The SMBJ11A-E3/5B maintains this clamping performance across its full operating temperature range.
Is the SMBJ11A-E3/5B suitable for automotive applications?
The SMBJ11A-E3/5B is RoHS-compliant commercial-grade; it is not AEC-Q101 qualified. For automotive use, Vishay offers the SMBJ11A-HE3 variant (AEC-Q101 qualified, suffix HE3). The SMBJ11A-E3/5B may be used in non-safety-critical automotive subsystems where qualification is not mandated, but design validation per ISO 7637-2 remains the customer's responsibility. Always verify qualification status using the full part number: SMBJ11A-E3/5B.
How does the SMBJ11A-E3/5B differ from the SMBJ11CA-E3/5B?
The SMBJ11A-E3/5B is unidirectional with cathode band marking and clamps only in reverse bias, while the SMBJ11CA-E3/5B is bidirectional with symmetric breakdown in both directions and no polarity marking. Their VWM, VBR, and VC values are identical, but the SMBJ11A-E3/5B is intended for DC rail protection (e.g., 12 V supply to ground), whereas SMBJ11CA-E3/5B suits AC or differential signal lines like CAN or RS-485. The SMBJ11A-E3/5B must be oriented correctly during placement.
What is the thermal resistance and how does it affect PCB layout for the SMBJ11A-E3/5B?
The SMBJ11A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. This means each watt of sustained power dissipation raises junction temperature by ~100 °C above ambient - so for repetitive surges, increasing copper area or adding thermal vias lowers RθJA and prevents thermal runaway. Layout directly impacts reliability of SMBJ11A-E3/5B in high-duty-cycle applications.
Does the SMBJ11A-E3/5B have a specified junction capacitance?
No junction capacitance (CJ) value is specified for the SMBJ11A-E3/5B in the official Vishay datasheet (Document Number: 88392, Rev. 09-Jan-2024). While typical SMBJ-series devices exhibit ~100–300 pF at zero bias, this parameter is not characterized or guaranteed for SMBJ11A-E3/5B. For high-speed signal line protection where capacitance matters (e.g., USB, HDMI), consult Vishay's SMBJ11A-E3/5B SPICE models or select a low-capacitance TVS variant. The SMBJ11A-E3/5B is optimized for power/signal rail protection, not RF-sensitive paths.
SMBJ11A-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:
- 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):
- 33A
- 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)
SMBJ11A-E3/5B FAQ
1.How can I place an order for SMBJ11A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11A-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 SMBJ11A-E3/5B reliable?
The price and inventory of SMBJ11A-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 SMBJ11A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11A-E3/5B?
SMBJ11A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11A-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 SMBJ11A-E3/5B?
For technical support, including SMBJ11A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11A-E3/5B requirements.
6.How does Aetrix verify that SMBJ11A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11A-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 SMBJ11A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11A-E3/5B?
All SMBJ11A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11A-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 SMBJ11A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ11A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11A-E3/5B Tags
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