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Vishay General Semiconductor - Diodes Division SMBJ11AHE3_A/I
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- Part No.:
- SMBJ11AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHE3_A/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,941
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Product details
Overview
SMBJ11AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power/signal lines. It features 11 V standoff voltage (VWM), 12.2–13.5 V breakdown range at 1 mA, 18.2 V max clamping voltage 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 SMBJ11AHE3_A/I datasheet, SMBJ11AHE3_A/I pinout, SMBJ11AHE3_A/I application, or SMBJ11AHE3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and direct alternatives for board-level ESD/transient protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation with ≤5 µA leakage at 11 V, then rapidly avalanches when transient voltage exceeds 12.2 V to limit downstream voltage to ≤18.2 V at 33 A. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it achieves 100 °C/W junction-to-ambient thermal resistance and supports repetitive surge duty cycle of 0.01 %, with operating junction temperature spanning –55 °C to +150 °C. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 12.2–13.5 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 18.2 V at IPPM = 33 A - peak voltage seen by protected circuit during 10/1000 µs surge; determines IC survivability margin. |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy absorption capability with standard 10/1000 µs waveform; validates robustness against lightning/inductive spikes. |
| ID (Reverse Leakage) | ≤5 µA at 11 V - minimal standby power loss and signal integrity impact in high-impedance circuits. |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard PCB pad layout; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - maximum allowable junction temperature; enables operation in under-hood automotive or industrial enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path terminal | Connected to lower-potential side (e.g., ground or return line); completes clamping path during reverse transient. |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 12 V rail or signal trace); initiates clamping when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces per stress test requirements. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 33 A without degradation - sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs - critical for 3.3 V/5 V logic and automotive microcontrollers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures stable VBR over time and temperature; reduces parameter drift in harsh environments vs. epoxy-passivated alternatives. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between supply rail and ground, shunting transients before they reach sensitive analog front-end or communication ICs. Use Value: Maintains 11 V system compatibility while limiting surge-induced voltage to ≤18.2 V - preserving signal integrity and preventing latch-up in 12 V automotive domains. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input optocoupler terminals to absorb inductive kickback and prevent false triggering. Use Value: Enables reliable operation under IEC 61000-4-4 EFT (4 kV) and IEC 61000-4-5 surge (2 kV) without derating or additional series impedance. |
| Consumer Power Adapter Output Clamping | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices and smart home hubs. IC Role / Device Role / Timing Role: Fast-response clamping diode placed across DC output to clamp transformer leakage spikes and MOSFET switching overshoot. Use Value: Limits output voltage excursion to 18.2 V during 33 A transients - protecting downstream USB-PD controllers rated for ≤20 V absolute maximum. |
Use Scenario: Primary protection on Ethernet PHY power rails and auxiliary bias supplies in telecom base station line cards. IC Role / Device Role / Timing Role: Unidirectional TVS on 3.3 V/5 V bias rails to suppress coupling from nearby RF stages or lightning-induced common-mode surges. Use Value: Provides 600 W surge handling with <5 µA leakage - ensuring low standby power and no signal distortion in always-on telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11AHM3_A/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and thermal performance. | No functional difference; selected where halogen-free compliance is mandated by OEM or regional environmental regulations. | Direct material substitution when RoHS + halogen-free requirements apply; no layout or validation change needed. |
| SMCJ11AHE3_A/I | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W) and 1500 W PPPM rating. | Used where higher surge energy handling (>600 W) or improved thermal dissipation is required, e.g., main power rail protection. | Choose when board space allows larger footprint and surge requirement exceeds 600 W; not pin-compatible due to different package outline. |
Compared with SMBJ11AHE3_A/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ11AHE3_A/I provides higher surge capacity in a non-interchangeable package - enabling tiered design choices based on environmental compliance and energy-handling needs.
Availability
SMBJ11AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and consumer power adapter designs requiring stable component supply with AEC-Q101 qualification and consistent TVS clamping performance.
Supply support for SMBJ11AHE3_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, automotive qualification, and high-volume manufacturability.
The SMBJ series targets board-level transient protection in automotive, industrial, and computing systems - engineered for fast response, stable clamping, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of SMBJ11AHE3_A/I at its rated peak pulse current?
The SMBJ11AHE3_A/I has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 33 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ11AHE3_A/I maintains this clamping performance across its qualified temperature range and after repeated surges within specification limits.
Is SMBJ11AHE3_A/I qualified for automotive applications?
Yes, SMBJ11AHE3_A/I is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and surge endurance required for automotive electronic components. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified versions. This makes SMBJ11AHE3_A/I suitable for use in engine control units, body electronics, and ADAS sensor modules where reliability under harsh conditions is mandatory.
What does the "HE3" suffix mean in SMBJ11AHE3_A/I?
The "HE3" suffix in SMBJ11AHE3_A/I indicates RoHS-compliant construction with AEC-Q101 qualification. "H" denotes AEC-Q101 qualification, "E3" signifies RoHS-compliant (lead-free) matte tin plating and packaging. The "_A/I" denotes tape-and-reel packaging: "A" is the revision code, and "I" specifies 13-inch diameter reel with 3200 units per reel. This suffix directly ties to Vishay's ordering nomenclature and compliance documentation.
How does SMBJ11AHE3_A/I differ from bidirectional variants like SMBJ11CA?
SMBJ11AHE3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, while SMBJ11CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMBJ11AHE3_A/I has a forward voltage drop (~3.5 V at 50 A) and is used where only reverse transients need suppression (e.g., DC power rails), whereas SMBJ11CA suits AC signal lines or differential buses. Their VBR and VC values differ accordingly - SMBJ11AHE3_A/I is not interchangeable with SMBJ11CA without circuit redesign.
What is the thermal resistance of SMBJ11AHE3_A/I, and how does it affect layout?
SMBJ11AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. This value assumes standard FR-4 PCB with no internal planes. To maintain safe junction temperatures under sustained power dissipation or high ambient conditions, designers must ensure adequate copper area and avoid excessive trace length. Derating is required above 25 °C ambient per Figure 2 in the Vishay datasheet 88392.
SMBJ11AHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ11AHE3_A/I FAQ
1.How can I place an order for SMBJ11AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHE3_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 SMBJ11AHE3_A/I reliable?
The price and inventory of SMBJ11AHE3_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 SMBJ11AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ11AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHE3_A/I?
SMBJ11AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHE3_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 SMBJ11AHE3_A/I?
For technical support, including SMBJ11AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ11AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHE3_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 SMBJ11AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ11AHE3_A/I?
All SMBJ11AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHE3_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 SMBJ11AHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ11AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHE3_A/I Tags
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