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Vishay General Semiconductor - Diodes Division SMBJ11AHM3_B/H
- Part No.:
- SMBJ11AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHM3_B/H.pdf
- Description:
- 600W,11V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,745
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Product details
Overview
SMBJ11AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails 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.
For engineers reviewing the SMBJ11AHM3_B/H datasheet, SMBJ11AHM3_B/H pinout, SMBJ11AHM3_B/H application, or SMBJ11AHM3_B/H equivalent, this device is selected for high-reliability surge suppression in automotive-grade industrial power supplies, sensor interface circuits, and MOSFET gate protection where low clamping voltage, fast response (<1 ps), and AEC-Q101 qualification are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only in reverse bias above VBR to limit transient voltages across protected components. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge stress.
The SMBJ11AHM3_B/H is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), operates from –55 °C to +150 °C junction temperature, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its halogen-free, RoHS-compliant construction and AEC-Q101 qualification support automotive and harsh-environment deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown range ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 18.2 V at 33 A - Clamping voltage limits downstream component stress during 600 W transient events. |
| PPPM | 600 W (10/1000 µs) - Peak surge energy handling capacity suitable for IEC 61000-4-5 Level 4 compliance. |
| IFSM | 100 A (8.3 ms half-sine) - Withstands high-energy inductive switch-off surges without failure. |
| TJ max | +150 °C - Enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount footprint compatible with automated assembly and IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during reverse transient. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); carries full surge current into ground during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets EU environmental directives and supports green manufacturing requirements for OEMs. |
| 600 W peak pulse power | Handles IEC 61000-4-5 combination wave surges up to 4 kV without degradation. |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing production overhead. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges. Use Value: Limits voltage to ≤18.2 V during 33 A transients, preventing damage to LDOs and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to absorb sub-100 ns ESD pulses. Use Value: Sub-1 ps response time ensures clamping occurs before sensitive ADC inputs saturate or latch up. |
| MOSFET Gate Protection | DC Power Supply Input Stage |
|
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by PWM controllers. IC Role / Device Role / Timing Role: TVS placed between gate and source to shunt Miller-induced voltage spikes during switching. Use Value: 18.2 V clamping protects gate dielectrics rated for ≤20 V absolute maximum, extending FET lifetime. |
Use Scenario: Front-end surge suppression in 24 V industrial PLC power modules compliant with IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping device in series with upstream fuse and common-mode choke. Use Value: 600 W rating enables single-device protection against 2 kA/4 kV surges without cascaded stages. |
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_B/H | Same electrical specs; RoHS-compliant but not halogen-free; no AEC-Q101 qualification. | Approved for commercial-grade industrial use only; excluded from automotive BOMs requiring AEC-Q101. | Select when halogen-free content is not mandated and automotive qualification is unnecessary. |
| SMBJ11CAHM3_B/H | Bidirectional variant; symmetric VBR (12.2–13.5 V), same VC (18.2 V), but no anode/cathode polarity marking. | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) where polarity reversal may occur. | Choose only when protecting balanced or alternating-polarity signals; not interchangeable in unidirectional DC rails. |
Compared with SMBJ11AHM3_B/H, the HE3 variant lacks halogen-free and automotive qualification, while the CAHM3 variant provides bidirectional clamping at identical voltage thresholds-making each suitable only for their respective polarity and compliance requirements.
Availability
SMBJ11AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and DC power supply designs requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free material content.
Supply support for SMBJ11AHM3_B/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBJ series was engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and telecom infrastructure where robustness and standardized packaging are essential.
FAQ
What is the clamping voltage of SMBJ11AHM3_B/H at its rated peak pulse current?
The SMBJ11AHM3_B/H has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current of 33 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees consistent overvoltage limiting behavior across production lots and temperature ranges from –55 °C to +150 °C.
Is SMBJ11AHM3_B/H suitable for automotive applications?
Yes, SMBJ11AHM3_B/H is AEC-Q101 qualified and specifically designated for automotive use with ordering code suffix HM3_X. Its halogen-free, RoHS-compliant construction, MSL Level 1 rating, and validated performance across –55 °C to +150 °C junction temperature make it appropriate for engine control, body electronics, and ADAS sensor protection in production vehicles.
How does SMBJ11AHM3_B/H differ from SMBJ11AHE3_B/H?
SMBJ11AHM3_B/H is halogen-free and AEC-Q101 qualified, whereas SMBJ11AHE3_B/H is RoHS-compliant but contains halogens and lacks automotive qualification. Both share identical electrical parameters (VWM = 11 V, VC = 18.2 V), but only SMBJ11AHM3_B/H meets automotive OEM material and reliability requirements.
What is the thermal resistance of SMBJ11AHM3_B/H from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SMBJ11AHM3_B/H is 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads). This value assumes natural convection and informs thermal design margins for sustained power dissipation up to 5.0 W at 50 °C ambient.
Can SMBJ11AHM3_B/H be used in bidirectional signal protection?
No, SMBJ11AHM3_B/H is a unidirectional TVS diode and must not be used for bidirectional signal lines such as RS-485 or CAN. For those applications, the bidirectional variant SMBJ11CAHM3_B/H is specified with identical voltage ratings but symmetrical clamping in both polarities and no polarity marking.
SMBJ11AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- 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_B/H FAQ
1.How can I place an order for SMBJ11AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHM3_B/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_B/H reliable?
The price and inventory of SMBJ11AHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ11AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHM3_B/H?
SMBJ11AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHM3_B/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_B/H?
For technical support, including SMBJ11AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHM3_B/H requirements.
6.How does Aetrix verify that SMBJ11AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ11AHM3_B/H?
All SMBJ11AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for SMBJ11AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHM3_B/H Tags
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