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Vishay General Semiconductor - Diodes Division SMBJ11AHM3_A/H
- Part No.:
- SMBJ11AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHM3_A/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
SMBJ11AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 11 V standoff 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBJ11AHM3_A/H datasheet, SMBJ11AHM3_A/H pinout, SMBJ11AHM3_A/H application, or SMBJ11AHM3_A/H equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, and real-world clamping performance data required for robust overvoltage design in 12 V automotive and industrial control systems.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp: reverse-biased during normal operation, it remains high-impedance below VWM = 11 V, then rapidly transitions to low-impedance conduction above VBR = 12.2–13.5 V to divert surge energy. Its glass-passivated junction ensures stable breakdown and low leakage (<5 µA at VWM).
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system operating margin. |
| VBR (Breakdown Voltage) | 12.2–13.5 V at IT = 1 mA - Confirmed avalanche initiation range; defines precise clamping onset threshold. |
| VC (Clamping Voltage) | 18.2 V at IPPM = 33 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream IC survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained surge energy handling capability under standardized 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 3/4 surges. |
| IPPM (Peak Pulse Current) | 33 A - Maximum non-repetitive surge current the device safely clamps without degradation; directly tied to PCB trace routing and fuse coordination. |
| TJmax | 150 °C - Maximum junction temperature; enables use in under-hood automotive environments with validated thermal design. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling; supports PPAP documentation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to GND or low-impedance reference plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Surge input node | Connected to protected line (e.g., 12 V rail or CAN-H); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 1 kV/2 Ω surge on 12 V supply rails without external series impedance. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, body ECUs, and ADAS sensor interfaces requiring zero-failure reliability. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream MOSFETs or microcontrollers during surge events - critical for 12 V logic-level devices. |
| MSL Level 1 (260 °C reflow compatible) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU ELV and automotive OEM material compliance mandates while maintaining identical electrical performance to E3 variants. |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor signal line and ground, activated within <1 ns to limit transient overshoot. Use Value: Maintains signal integrity below 18.2 V during 33 A surges, preventing latch-up or damage to 12 V-tolerant ADC inputs and op-amps. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers subjected to inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to shunt switching transients before they reach optocoupler input stages. Use Value: Clamps 10/1000 µs surges to ≤18.2 V at 33 A, ensuring optocoupler CTR stability and eliminating false triggering in noisy factory environments. |
| Automotive Body Control Module | Telecom Power Supply Input |
|
Use Scenario: Overvoltage protection on 12 V power distribution nodes feeding door module microcontrollers and LED drivers. IC Role / Device Role / Timing Role: Primary clamping device on main VBAT feed, coordinated with upstream fuse and secondary LC filtering. Use Value: Withstands repeated 12 V load dump events (ISO 16750-2) up to 35 V for 400 ms while limiting peak clamping to 18.2 V - preserving MCU reset logic and EEPROM integrity. |
Use Scenario: Secondary surge suppression on +48 V DC telecom power inputs after primary MOV-based front-end protection. IC Role / Device Role / Timing Role: Fast-response TVS providing low-clamp backup for telecom rectifier outputs feeding sensitive PoE controllers and PHYs. Use Value: Delivers sub-20 V clamping at 33 A with <1 ns response, protecting 48 V-rated silicon against residual transients that bypass bulk MOV clamping. |
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/H | Same electrical specs (VWM, VBR, VC, PPPM), but RoHS-compliant commercial grade (E3) - not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select SMBJ11AHE3_A/H only if automotive PPAP or extended temperature validation is unnecessary. |
| SMAJ11A-M3 | Lower power rating: 400 W PPPM, higher VC = 19.0 V at 23.5 A; SMA package (smaller footprint, lower thermal mass). | Reduced surge margin and less robust thermal performance; limited to lower-energy transients or space-constrained layouts. | Choose SMAJ11A-M3 only when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
Compared with SMBJ11AHM3_A/H, SMBJ11AHE3_A/H offers identical clamping performance without automotive qualification, while SMAJ11A-M3 trades 33% lower surge capacity and higher clamping voltage for 30% smaller footprint - making SMBJ11AHM3_A/H the optimal choice for AEC-Q101–required 12 V automotive nodes demanding full 600 W immunity.
Availability
SMBJ11AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC digital inputs, and telecom power supply protection requiring stable component supply across production lifecycles.
Supply support for SMBJ11AHM3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, AEC-Q101 compliance, and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of SMBJ11AHM3_A/H at its rated peak pulse current?
The SMBJ11AHM3_A/H has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current (IPPM) of 33 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects the actual voltage imposed on the protected circuit during worst-case surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ11AHM3_A/H maintains this clamping performance across its qualified operating temperature range.
Is SMBJ11AHM3_A/H qualified for automotive applications?
Yes, SMBJ11AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and Vishay's official documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling, and unbiased highly accelerated stress testing (UHAST). The SMBJ11AHM3_A/H is approved for use in automotive body control modules, sensor interfaces, and infotainment power supplies where zero-failure reliability under extended temperature and vibration profiles is required.
How does the HM3 suffix differ from E3 or M3 in SMBJ11AHM3_A/H?
The HM3 suffix in SMBJ11AHM3_A/H denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant commercial grade, no AEC-Q101) and M3 (halogen-free RoHS-compliant commercial grade, no AEC-Q101). All three share identical electrical characteristics and SMB package dimensions, but only HM3 guarantees automotive-grade reliability validation. The SMBJ11AHM3_A/H meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility.
What is the thermal resistance of SMBJ11AHM3_A/H, and how does it affect layout?
SMBJ11AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and junction-to-lead resistance (RθJL) of 20 °C/W. These values require adherence to Vishay's recommended pad layout to ensure safe operation at 150 °C junction temperature during repetitive surges. Reducing copper area increases RθJA, risking thermal runaway - so the SMBJ11AHM3_A/H must be placed with full thermal pads and minimal trace length to ground planes.
Can SMBJ11AHM3_A/H replace SMBJ11AHE3_A/H in an existing design?
Yes, SMBJ11AHM3_A/H is a direct drop-in replacement for SMBJ11AHE3_A/H in terms of footprint, pinout, and electrical specifications - both use the SMB (DO-214AA) package and share identical VWM, VBR, VC, and PPPM. The only functional difference is AEC-Q101 qualification: SMBJ11AHM3_A/H adds automotive reliability validation without altering circuit behavior. No PCB changes or layout modifications are needed when upgrading from SMBJ11AHE3_A/H to SMBJ11AHM3_A/H.
SMBJ11AHM3_A/H 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/H FAQ
1.How can I place an order for SMBJ11AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHM3_A/H 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/H reliable?
The price and inventory of SMBJ11AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMBJ11AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHM3_A/H?
SMBJ11AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHM3_A/H 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/H?
For technical support, including SMBJ11AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ11AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMBJ11AHM3_A/H?
All SMBJ11AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMBJ11AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHM3_A/H Tags
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