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Vishay General Semiconductor - Diodes Division SMBJ11AHE3_B/I
- Part No.:
- SMBJ11AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHE3_B/I.pdf
- Description:
- 600W,11V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,827
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Product details
Overview
SMBJ11AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤18.2 V at 33 A peak pulse current (IPPM) under 10/1000 µs waveform - deployed on power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMBJ11AHE3_B/I datasheet, SMBJ11AHE3_B/I pinout, SMBJ11AHE3_B/I application, or SMBJ11AHE3_B/I equivalent, this AEC-Q101 qualified TVS offers verified 600 W peak pulse power, low clamping ratio (VC/VBR ≈ 1.43), and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD and load-dump protection design validation.
Technical Context
This unidirectional TVS operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients. The device is rated for 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and supports continuous power dissipation of 5.0 W at TA = 50 °C.
Thermal performance is defined by RθJA = 100 °C/W (typ.) on standard 0.2" × 0.2" copper pads, with maximum junction temperature of +150 °C. Polarity is marked by a cathode band; it is not bidirectional - no CA suffix - and requires correct orientation in series with protected circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets upper limit for normal circuit operation. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed avalanche onset range; defines minimum clamping threshold under transient stress. |
| VC @ IPPM | ≤18.2 V at 33 A (10/1000 µs) - Measured clamping voltage; determines worst-case voltage seen by downstream ICs during surge. |
| PPPM | 600 W - Peak pulse power handling capability; validates protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports load-dump immunity in 12 V automotive systems. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in under-hood or industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, MSL Level 1 (peak reflow 260 °C), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential rail; reverse-biased during clamping event. |
| Cathode | Reverse-biased terminal / high-side connection | Marked by band; connected to protected line (e.g., 12 V supply or CAN_H); conducts avalanche current during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 surge events up to 4 kV without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on downstream MOSFETs or microcontrollers during transient suppression. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<5 µA at VWM) across temperature and lifetime. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without preconditioning or baking. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and bulk capacitor. Use Value: Limits voltage to ≤18.2 V during 33 A surge, preventing damage to LDOs and MCU power domains. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA transmitter) from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS connected from signal line to ground, preserving bandwidth. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) with sub-nanosecond response, avoiding signal distortion. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converter input stage. Use Value: Absorbs 600 W pulses without thermal runaway, maintaining system uptime during lightning-induced grid disturbances. |
Use Scenario: Adding secondary-level surge protection to USB VBUS lines in portable audio devices. IC Role / Device Role / Timing Role: Secondary TVS after primary fuse and common-mode choke, targeting fast transients. Use Value: Provides <18.2 V clamping at 33 A while meeting USB-IF ESD immunity requirements (±15 kV air, ±8 kV contact). |
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_B/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free compliance is mandated by OEM or regional regulation. | Direct material substitution when halogen-free bill-of-materials is required. |
| SMBJ11A-E3/5B | Same electrical characteristics but commercial-grade (non-AEC-Q101), packaged in 13" tape (3200 pcs). | Lacks automotive qualification; suitable for industrial or consumer applications with lower reliability requirements. | Cost-optimized alternative for non-automotive designs where AEC-Q101 is not mandatory. |
Compared with SMBJ11AHE3_B/I, the HM3 variant adds halogen-free compliance without altering performance, while the E3/5B version trades automotive qualification for lower cost and broader commercial availability - enabling tiered sourcing based on end-equipment certification needs.
Availability
SMBJ11AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ11AHE3_B/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 and automotive-grade qualification.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting ISO 7637-2 and IEC 61000-4-5 compliant systems across automotive, industrial, and infrastructure markets.
FAQ
What is the clamping voltage of SMBJ11AHE3_B/I at its rated peak pulse current?
The SMBJ11AHE3_B/I clamps to a maximum of 18.2 V at its rated peak pulse current of 33 A under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects worst-case voltage exposure for protected circuitry during surge events - a key parameter for validating margin against downstream IC absolute maximum ratings.
Is SMBJ11AHE3_B/I suitable for bidirectional signal line protection?
No, SMBJ11AHE3_B/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection (e.g., RS-485, CAN bus), the SMBJ11CA variant must be used. Using SMBJ11AHE3_B/I on AC-coupled or symmetrical signal lines risks forward conduction and improper clamping behavior.
Does SMBJ11AHE3_B/I meet automotive qualification standards?
Yes, SMBJ11AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet revision 09-Jan-2024. This qualification covers stress tests including HTGB, HTRB, and temperature cycling, making it suitable for under-hood and chassis-mounted automotive modules.
What is the maximum reverse leakage current for SMBJ11AHE3_B/I at its stand-off voltage?
At VWM = 11 V and TA = 25 °C, the SMBJ11AHE3_B/I exhibits a maximum reverse leakage current (ID) of 5.0 µA. This low leakage ensures minimal power loss in always-on circuits and avoids false triggering in high-impedance sensing nodes - critical for battery-powered sensor applications.
Can SMBJ11AHE3_B/I be used in lead-free reflow processes?
Yes, SMBJ11AHE3_B/I is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard lead-free soldering profiles. No pre-baking is required, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
SMBJ11AHE3_B/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:
- 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)
SMBJ11AHE3_B/I FAQ
1.How can I place an order for SMBJ11AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHE3_B/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_B/I reliable?
The price and inventory of SMBJ11AHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ11AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHE3_B/I?
SMBJ11AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHE3_B/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_B/I?
For technical support, including SMBJ11AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ11AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ11AHE3_B/I?
All SMBJ11AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMBJ11AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11AHE3_B/I Tags
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