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Vishay General Semiconductor - Diodes Division SMBJ11AHM3_A/I
- Part No.:
- SMBJ11AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHM3_A/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
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Product details
Overview
SMBJ11AHM3_A/I 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ11AHM3_A/I datasheet, SMBJ11AHM3_A/I pinout, SMBJ11AHM3_A/I application, or SMBJ11AHM3_A/I equivalent, key selection criteria include unidirectional polarity, 18.2 V clamping performance at 33 A, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), and SMB package thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a fast-acting shunt protection device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VBR. Its glass-passivated junction enables sub-nanosecond response time and stable clamping under repetitive surge conditions with 0.01% duty cycle.
The SMBJ11AHM3_A/I is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 1.0 µA max reverse leakage at VWM ensures minimal standby power loss in battery-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage during 10/1000 µs transient, limiting downstream stress |
| PPPM | 600 W - Peak transient energy absorption capability under standardized surge waveform |
| ID @ VWM | 5.0 µA max - Low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150 °C - Enables reliable operation in high-temperature industrial and automotive under-hood environments |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked by cathode band on one end. Matte tin-plated leads, compliant with J-STD-002 solderability and JESD 22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality of clamping |
| Cathode | Clamping output / Surge return path | Connected to higher-potential rail (e.g., VCC); conducts surge current to ground or rail during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is mandatory |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations for green manufacturing |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for protecting modern low-voltage ICs |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay and solenoid switching. IC Role / Device Role / Timing Role: Shunt clamping element placed across DC bus or signal line to limit transient voltage to safe levels. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic inputs by clamping spikes to ≤18.2 V within nanoseconds. |
Use Scenario: Safeguarding LIN bus transceivers and power window motor controllers from load dump and jump-start events. IC Role / Device Role / Timing Role: Unidirectional TVS connected between supply rail and ground to absorb 12 V system surges up to 600 W. Use Value: Maintains functional safety compliance (ISO 16750-2) by holding clamped voltage below 20 V during 100 ms load dump pulses. |
| Consumer Power Adapters | Industrial Sensor Signal Conditioning |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters to protect USB-PD controllers and optocouplers. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across output capacitor to clamp flyback transformer ringing and ESD events. Use Value: Ensures <5 µA leakage at 11 V, avoiding regulation drift while delivering 18.2 V clamping for ±15 kV contact ESD (IEC 61000-4-2). |
Use Scenario: Input protection for 4–20 mA current loop receivers and analog front-ends in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor on signal input to prevent op-amp saturation during field wiring faults. Use Value: Limits fault voltage to 18.2 V without distorting 20 kHz bandwidth signals due to minimal junction capacitance (<100 pF at 0 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11AHE3_A/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade industrial equipment without automotive qualification mandates | Select when halogen-free content or automotive qualification is not required; identical electrical specs and SMB package |
| SMBJ11CAHM3_A/I | Bidirectional variant with same VWM (11 V), symmetric clamping in both polarities | Required for AC-coupled or differential signal lines subject to bipolar transients (e.g., RS-485, CAN) | Choose only if bidirectional protection is needed; not a drop-in replacement due to polarity difference |
Compared with SMBJ11AHM3_A/I, the HE3 variant trades halogen-free construction for cost-sensitive commercial use, while the CAHM3 variant adds bidirectional symmetry at the expense of unidirectional optimization-neither is pin-compatible without circuit review.
Availability
SMBJ11AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ11AHM3_A/I 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, power efficiency, and automotive-grade validation.
The SMBJ series delivers standardized TVS protection for board-level surge immunity across consumer, industrial, and automotive markets, engineered for consistent clamping performance and automated SMT assembly compatibility.
FAQ
What is the clamping voltage of SMBJ11AHM3_A/I at its rated peak pulse current?
The SMBJ11AHM3_A/I has a maximum clamping voltage (VC) of 18.2 V when subjected to its specified peak pulse current (IPPM) of 33 A under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during surge events, directly protecting downstream 3.3 V or 5 V ICs connected to the same rail.
Is SMBJ11AHM3_A/I qualified for automotive applications?
Yes, SMBJ11AHM3_A/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's ordering information table. This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock, making SMBJ11AHM3_A/I suitable for under-hood and chassis-mounted automotive electronics where reliability under harsh environmental conditions is mandatory.
What does the "HM3" suffix indicate for SMBJ11AHM3_A/I?
The "HM3" suffix in SMBJ11AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only), HE3 (RoHS + AEC-Q101), and M3 (halogen-free RoHS only). The HM3 version satisfies both environmental compliance and automotive reliability requirements in a single package.
Can SMBJ11AHM3_A/I be used in bidirectional signal protection?
No, SMBJ11AHM3_A/I is a unidirectional TVS diode, intended for DC-biased lines where transients occur primarily in one polarity. For bidirectional protection (e.g., AC lines or differential buses), the SMBJ11CAHM3_A/I variant must be used instead. Using SMBJ11AHM3_A/I on bidirectional signals risks failure during reverse-polarity surges due to lack of symmetrical clamping.
What is the thermal resistance of SMBJ11AHM3_A/I, and how does it affect layout design?
SMBJ11AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended copper pads (0.2" × 0.2"). This value requires careful PCB layout: increasing pad area or adding thermal vias reduces effective RθJA, preventing junction temperature exceedance during repetitive surges. At 5.0 W steady-state dissipation, ambient temperature must remain below 100 °C to stay within the +150 °C TJ max rating.
SMBJ11AHM3_A/I 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:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ11AHM3_A/I FAQ
1.How can I place an order for SMBJ11AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHM3_A/I 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 SMBJ11AHM3_A/I reliable?
The price and inventory of SMBJ11AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ11AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHM3_A/I?
SMBJ11AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHM3_A/I 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 SMBJ11AHM3_A/I?
For technical support, including SMBJ11AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ11AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHM3_A/I 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 SMBJ11AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ11AHM3_A/I?
All SMBJ11AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHM3_A/I, 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 SMBJ11AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ11AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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