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Vishay General Semiconductor - Diodes Division SMBJ11AHM3/H
- Part No.:
- SMBJ11AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHM3/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,874
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Product details
Overview
SMBJ11AHM3/H 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 SMBJ11AHM3/H datasheet, SMBJ11AHM3/H pinout, SMBJ11AHM3/H application, or SMBJ11AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ps) to ESD and surge events. Its glass-passivated junction ensures stable leakage performance (ID ≤ 5 µA at VWM) and low incremental surge resistance, enabling reliable protection of 3.3 V/5 V/12 V rail interfaces without forward conduction during normal operation.
The SMBJ11AHM3/H is rated for 100 A non-repetitive peak forward surge current (IFSM, 8.3 ms half-sine), supports MSL Level 1 moisture sensitivity, and achieves 260 °C lead-free reflow compatibility. Its thermal design relies on 0.2" × 0.2" copper pads per terminal to sustain 5.0 W power dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage seen by protected circuit under 600 W transient; limits stress on downstream 20 V-rated components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; determines derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial control environments. |
| ID @ VWM | ≤ 5 µA - Reverse leakage at stand-off voltage; ensures minimal standby power loss in battery-powered sensor nodes. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., VIN or signal trace); sinks surge current when cathode is held at higher potential. |
| Cathode | Current exit point during clamping | Connected to ground or lower-potential reference; establishes unidirectional clamping direction and polarity-sensitive placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial equipment and telecom infrastructure. |
| AEC-Q101 qualified (HM3 suffix) | Confirms reliability for automotive powertrain and body electronics applications requiring extended temperature and life-cycle validation. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for EU, China RoHS, and JEITA standards without compromising surge performance. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without preconditioning; eliminates moisture-related popcorning risk. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime, critical for precision sensor front-ends. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails and LIN bus inputs from load dump and inductive switching transients in BCM ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between fused battery input and LDO regulator input. Use Value: Limits transient voltage to ≤18.2 V, preventing damage to 20 V-rated regulators and microcontrollers while maintaining AEC-Q101 qualification. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring surge and ESD. IC Role / Device Role / Timing Role: Primary surge suppression element mounted directly at connector interface before optocoupler input stage. Use Value: Clamps 1 kV/500 A surge (IEC 61000-4-5) to <19 V, preserving signal integrity and enabling >100,000 surge cycles per channel. |
| Consumer Appliance Motor Drive Board | Telecom Base Station Power Monitoring |
|
Use Scenario: Shielding MCU GPIO and gate driver supply pins from back-EMF spikes generated by brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Localized TVS on motor driver IC VDD rail and enable signal line. Use Value: Responds in <1 ps to 600 W transients, limiting voltage overshoot to 18.2 V and avoiding false resets or latch-up in 3.3 V logic circuits. |
Use Scenario: Protecting analog voltage monitoring inputs (e.g., -48 V DC feed) in telecom rectifier modules from lightning-induced surges. IC Role / Device Role / Timing Role: High-reliability unidirectional clamp on shunt resistor measurement path. Use Value: Maintains ≤5 µA leakage at 48 V bias, ensuring <0.1% measurement error while surviving repeated 600 W transients per IEC 61643-31. |
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/H | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified). | Lacks automotive qualification and halogen-free certification; suitable only for non-automotive industrial/commercial use. | Select SMBJ11AHE3/H if AEC-Q101 and halogen-free requirements are not mandated. |
| SMBJ11CAHM3/H | Bidirectional variant with same VWM (11 V), symmetric clamping in both polarities; VC = 19.9 V at 29.2 A. | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN) where polarity reversal may occur. | Choose SMBJ11CAHM3/H only when bidirectional protection is explicitly needed; not a drop-in replacement. |
Compared with SMBJ11AHE3/H, the SMBJ11AHM3/H adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMBJ11CAHM3/H, it provides tighter unidirectional clamping (18.2 V vs. 19.9 V) and higher peak current rating (33 A vs. 29.2 A) for DC rail protection.
Availability
SMBJ11AHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, consumer appliance motor controls, and telecom power monitoring systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ11AHM3/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 MOSFETs with emphasis on high-reliability, high-efficiency, and application-specific performance.
The SMBJ series was developed to deliver standardized, high-power transient suppression in compact surface-mount packages for automotive, industrial, and telecom applications demanding AEC-Q101 qualification and halogen-free compliance.
FAQ
What is the clamping voltage of SMBJ11AHM3/H at its rated peak pulse current?
The SMBJ11AHM3/H has a maximum clamping voltage (VC) of 18.2 V at 33 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event. The SMBJ11AHM3/H maintains this clamping performance across its qualified operating temperature range.
Is SMBJ11AHM3/H qualified for automotive applications?
Yes, SMBJ11AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix in its part number. This qualification confirms its suitability for automotive applications including body control modules, lighting drivers, and infotainment power supplies. The SMBJ11AHM3/H undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 requirements.
What does the "HM3" suffix signify in SMBJ11AHM3/H?
The "HM3" suffix in SMBJ11AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade "E3" or "M3" versions and confirms compliance with automotive reliability standards, JEDEC JESD201 Class 2 whisker resistance, and UL 94 V-0 flammability rating for the molding compound.
Can SMBJ11AHM3/H be used in bidirectional signal protection?
No, SMBJ11AHM3/H is a unidirectional TVS diode and must not be used for bidirectional signal lines such as RS-485 or CAN without external polarity conditioning. For bidirectional protection, the SMBJ11CAHM3/H variant is specified - it features symmetrical breakdown and clamping in both directions, with a different VC (19.9 V) and IPPM (29.2 A) rating. Using SMBJ11AHM3/H in bidirectional roles risks failure during reverse-polarity transients.
What is the thermal resistance of SMBJ11AHM3/H, and how does it affect PCB layout?
The SMBJ11AHM3/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. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA, lowering allowable power dissipation. To maintain reliability under repetitive surges, designers must ensure adequate copper area and avoid excessive trace length between SMBJ11AHM3/H and ground plane.
SMBJ11AHM3/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:
- 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/H FAQ
1.How can I place an order for SMBJ11AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHM3/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/H reliable?
The price and inventory of SMBJ11AHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMBJ11AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHM3/H?
SMBJ11AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHM3/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/H?
For technical support, including SMBJ11AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHM3/H requirements.
6.How does Aetrix verify that SMBJ11AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMBJ11AHM3/H?
All SMBJ11AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHM3/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/H part is unused and in its original packaging.
Return procedure for SMBJ11AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHM3/H Tags
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