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Vishay General Semiconductor - Diodes Division SMBJ11AHM3/I
- Part No.:
- SMBJ11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHM3/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,388
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Product details
Overview
SMBJ11AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ11AHM3/I datasheet, SMBJ11AHM3/I pinout, SMBJ11AHM3/I application, or SMBJ11AHM3/I equivalent, this device is selected for robust overvoltage protection on DC power rails, MOSFET gate drivers, and sensor signal lines in industrial control, automotive ECUs, and telecom infrastructure where AEC-Q101 qualification, low clamping voltage, and halogen-free RoHS compliance are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ns) to transient events and low incremental surge resistance. Its glass-passivated junction ensures stable breakdown characteristics and high reliability under repetitive surge stress.
The SMBJ11AHM3/I is rated for 150 °C maximum junction temperature, 100 A peak forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its thermal resistance (RθJA = 100 °C/W) reflects standard SMB footprint thermal performance on 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V DC systems. |
| VBR (Breakdown Voltage) | 12.2–13.5 V at 1 mA - Tight tolerance ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 18.2 V at IPPM = 33 A - Limits voltage seen by protected IC/MOSFET during 600 W surge, enabling downstream component survival. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy transients common in automotive load-dump and industrial motor switching. |
| ID (Reverse Leakage) | 5.0 µA max at VWM - Negligible standby current avoids power loss in battery-powered or low-quiescent designs. |
| TJ max. | 150 °C - Supports operation in under-hood automotive and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" length, compatible with automated pick-and-place and IPC-7351B footprints. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked by cathode band. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms clamping path when cathode is biased above VBR. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); band-marked end enables visual polarity verification during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive kickback in solenoid/relay circuits without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20E requirements for green manufacturing and end-of-life disposal. |
| MSL Level 1 (260 °C peak) | Supports single-reflow lead-free assembly without moisture-induced popcorn failure or delamination. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on protected devices compared to higher-ratio TVS diodes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, absorbing surge energy before it reaches LDOs or microcontrollers. Use Value: Enables compliance with automotive EMC standards while maintaining <18.2 V clamped voltage during 33 A transients, preventing latch-up or damage to downstream silicon. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA or 0–10 V) of pressure/temperature sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal and ground, providing sub-nanosecond response to fast-rising transients. Use Value: Limits transient voltage to ≤18.2 V without distorting low-bandwidth analog signals due to minimal leakage (5 µA) and no DC loading effect. |
| Telecom DC Power Input Protection | MOSFET Gate Driver Protection |
|
Use Scenario: Safeguarding -48 V or +24 V DC inputs of base station power supplies and remote radio units against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS mounted at board edge, clamping incoming transients before they propagate into DC/DC converters and PMICs. Use Value: Withstands 600 W pulses and maintains stable VBR over temperature (-55 to +150 °C), ensuring consistent protection across wide environmental ranges. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs used in motor drives and power inverters during shoot-through or Miller-induced spikes. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals, clamping gate-source voltage to ≤18.2 V during fast dv/dt events. Use Value: Fast response time and low clamping voltage preserve MOSFET integrity without adding significant capacitance that could slow switching. |
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/I | Same electrical specs but RoHS-compliant commercial grade (non-halogen-free, non-AEC-Q101). | Lacks automotive qualification and halogen-free certification; suitable for consumer or industrial non-automotive use. | Select SMBJ11AHE3/I only if AEC-Q101 and halogen-free requirements are not mandated. |
| SMBJ11CAHM3/I | Bidirectional variant with same VWM (11 V), symmetric clamping in both directions, no polarity marking. | Used where AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) require symmetrical transient suppression. | Choose SMBJ11CAHM3/I only when protecting balanced differential interfaces; not a drop-in replacement for unidirectional layouts. |
Compared with SMBJ11AHM3/I, SMBJ11AHE3/I offers identical clamping performance without automotive qualification or halogen-free materials, while SMBJ11CAHM3/I provides bidirectional protection at the cost of polarity-sensitive layout compatibility-making SMBJ11AHM3/I the optimal choice for AEC-Q101-compliant unidirectional DC rail protection.
Availability
SMBJ11AHM3/I 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 SMBJ11AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 validation, and precise clamping performance are critical.
FAQ
What is the clamping voltage of SMBJ11AHM3/I at its rated peak pulse current?
The SMBJ11AHM3/I has a maximum clamping voltage (VC) of 18.2 V at its 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 ensures protected circuitry remains below critical overvoltage thresholds during surge events. The SMBJ11AHM3/I achieves this with low incremental surge resistance and tight VBR distribution.
Is SMBJ11AHM3/I suitable for automotive applications?
Yes, SMBJ11AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It is explicitly rated for junction temperatures up to 150 °C and tested for mechanical shock, temperature cycling, and humidity bias-making SMBJ11AHM3/I appropriate for under-hood and chassis-mounted automotive modules including ECUs, ADAS sensors, and infotainment power supplies.
How does the SMBJ11AHM3/I differ from the SMBJ11AHE3/I variant?
The SMBJ11AHM3/I differs from SMBJ11AHE3/I in three key aspects: it is halogen-free (per JEDEC J-STD-20E), AEC-Q101 qualified, and carries the HM3 suffix denoting automotive-grade compliance. Electrically, both share identical VWM (11 V), VBR (12.2–13.5 V), and VC (18.2 V) specs. SMBJ11AHM3/I is required where automotive qualification or halogen-free mandates apply; SMBJ11AHE3/I serves commercial-grade applications without those constraints.
What is the polarity configuration of SMBJ11AHM3/I and how is it identified?
SMBJ11AHM3/I is a unidirectional TVS diode with cathode-anode polarity. The cathode is marked by a visible band on the SMB (DO-214AA) package body, aligned with the cathode terminal. During PCB layout, the banded end must connect to the line being protected (e.g., 12 V rail), while the anode connects to ground. This configuration enables clamping only during positive transients relative to ground-critical for DC power rail protection.
Does SMBJ11AHM3/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ11AHM3/I meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C for lead-free processes. Its molding compound and terminations are qualified for standard SMT assembly without baking or special handling. This eliminates moisture-related risks such as popcorning or interfacial delamination during reflow, supporting high-yield manufacturing for automotive and industrial production runs using SMBJ11AHM3/I.
SMBJ11AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMBJ11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHM3/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/I reliable?
The price and inventory of SMBJ11AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMBJ11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHM3/I?
SMBJ11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHM3/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/I?
For technical support, including SMBJ11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHM3/I requirements.
6.How does Aetrix verify that SMBJ11AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMBJ11AHM3/I?
All SMBJ11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHM3/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/I part is unused and in its original packaging.
Return procedure for SMBJ11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHM3/I Tags
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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