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Vishay General Semiconductor - Diodes Division SMBJ11AHE3_B/H
- Part No.:
- SMBJ11AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11AHE3_B/H.pdf
- Description:
- 600W,11V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,481
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Product details
Overview
SMBJ11AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ11AHE3_B/H datasheet, SMBJ11AHE3_B/H pinout, SMBJ11AHE3_B/H application, or SMBJ11AHE3_B/H equivalent, this device is selected for robust overvoltage protection on DC power rails, MOSFET gate drivers, and sensor signal lines in industrial control, automotive ECUs, and telecom infrastructure where AEC-Q101 qualification, low clamping ratio, and fast response time are critical.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive surge conditions. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ max = 150 °C) support reliable operation on standard PCB copper pads without heatsinking.
The device complies with ANSI/IEEE C62.35 surge standards and meets J-STD-020 MSL Level 1 (peak reflow ≤ 260 °C). It is RoHS-compliant and AEC-Q101 qualified - confirmed by the "HE3" suffix - making it suitable for automotive-grade power rail protection where long-term reliability under thermal cycling and humidity is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin for protected circuit. |
| VBR (Breakdown Voltage) | 12.2–13.5 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 18.2 V at IPPM = 33 A - Peak voltage seen by downstream circuit during 600 W transient; determines protection margin for 12 V systems. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy transients without failure; enables use in IEC 61000-4-5 Level 4 compliant designs. |
| ID (Reverse Leakage) | 5.0 µA max at VWM - Minimal standby current draw; avoids loading of low-power sensor or microcontroller supply rails. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" x 0.155" footprint; compatible with automated pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band on one end; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when V > VBR. |
| Anode (unbanded end) | Reference / return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics; supports extended temperature and lifetime reliability requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients per IEC 61000-4-5; eliminates need for external series impedance in many 12 V DC protection schemes. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during clamping; preserves margin for 12 V logic and analog ICs with 20 V absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C); eliminates baking requirement prior to assembly. |
| Glass passivated junction | Ensures stable VBR over time and temperature; reduces parameter drift in harsh industrial or automotive environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, responding within <1 ns to suppress spikes up to 600 W. Use Value: Prevents latch-up or permanent damage to MCU, CAN transceivers, and power management ICs exposed to ISO 7637-2 Pulse 5a/b waveforms. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS shunting transient energy away from op-amp inputs or ADC front-ends. Use Value: Maintains signal integrity below 10 mV offset shift while meeting IEC 61000-4-2 Level 4 (8 kV contact) immunity requirements. |
| Telecom DC Power Input Protection | MOSFET Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against surges on 48 V DC supply lines. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing induced lightning surges before they reach DC/DC converters and Ethernet PHYs. Use Value: Clamps transients to ≤18.2 V while sustaining 33 A pulses - sufficient to meet GR-1089-CORE Section 4.5.2 telecom surge compliance. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by microcontrollers. IC Role / Device Role / Timing Role: Fast-response TVS placed across gate-source terminals to clamp Miller-induced voltage spikes during switching. Use Value: Limits VGS excursion to <18.2 V, well below typical 20 V absolute maximum rating, avoiding destructive gate breakdown. |
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/H | Halogen-free, RoHS-compliant, AEC-Q101 qualified - identical electrical specs but different material composition. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy. | Direct material substitution where halogen content must be minimized; same footprint, thermal, and electrical performance. |
| SMBJ11A-E3/52 | Commercial-grade (non-AEC-Q101), same SMB package and electrical characteristics; RoHS-compliant but not automotive-qualified. | Suitable for non-automotive industrial or consumer applications where AEC-Q101 is not required. | Cost-optimized alternative for non-automotive designs; requires validation for extended temperature and lifetime stress. |
Compared with SMBJ11AHE3_B/H, the HM3 variant offers identical protection performance with halogen-free packaging, while the E3/52 version provides commercial-grade cost savings without AEC-Q101 validation - enabling tiered selection based on automotive compliance and material restrictions.
Availability
SMBJ11AHE3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMBJ11AHE3_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, and protection devices with emphasis on reliability, precision, and application-specific qualification.
The SMBJ series is engineered for robust transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMBJ11AHE3_B/H at its rated peak pulse current?
The SMBJ11AHE3_B/H has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 33 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is critical for ensuring compatibility with 12 V system components' absolute maximum ratings. The SMBJ11AHE3_B/H maintains this clamping performance across its qualified temperature range.
Is SMBJ11AHE3_B/H suitable for automotive applications?
Yes, SMBJ11AHE3_B/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code. It is specifically designed for automotive environments, supporting operating junction temperatures from –55 °C to +150 °C and validated for reliability under thermal cycling, humidity, and mechanical stress per AEC-Q101 test conditions. The SMBJ11AHE3_B/H is commonly deployed in engine control modules, body control units, and ADAS power supplies.
How does the SMBJ11AHE3_B/H differ from the SMBJ11A-E3/52 variant?
The SMBJ11AHE3_B/H is AEC-Q101 qualified and RoHS-compliant, whereas the SMBJ11A-E3/52 is RoHS-compliant but commercial-grade only - lacking automotive qualification. Both share identical electrical parameters (VWM = 11 V, VC = 18.2 V, PPPM = 600 W) and SMB package dimensions. The SMBJ11AHE3_B/H is selected when automotive reliability certification is mandatory; the E3/52 serves cost-sensitive industrial or consumer applications.
What is the reverse leakage current specification for SMBJ11AHE3_B/H at its stand-off voltage?
The SMBJ11AHE3_B/H specifies a maximum reverse leakage current (ID) of 5.0 µA at its stand-off voltage (VWM) of 11 V and TA = 25 °C. This low leakage ensures minimal power loss and avoids unintended loading of low-current sensor outputs or battery-backed circuits. The SMBJ11AHE3_B/H maintains leakage below 10 µA even at elevated temperatures up to 85 °C, as verified in Vishay's characterization data.
Can SMBJ11AHE3_B/H be used in bidirectional protection configurations?
No, SMBJ11AHE3_B/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the SMBJ11CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using SMBJ11AHE3_B/H in reverse-biased configurations risks permanent damage due to lack of reverse avalanche capability. Always match the device polarity to the protection topology - SMBJ11AHE3_B/H is intended for DC rail-to-ground clamping only.
SMBJ11AHE3_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)
SMBJ11AHE3_B/H FAQ
1.How can I place an order for SMBJ11AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11AHE3_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 SMBJ11AHE3_B/H reliable?
The price and inventory of SMBJ11AHE3_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 SMBJ11AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ11AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11AHE3_B/H?
SMBJ11AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11AHE3_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 SMBJ11AHE3_B/H?
For technical support, including SMBJ11AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ11AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11AHE3_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 SMBJ11AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ11AHE3_B/H?
All SMBJ11AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11AHE3_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 SMBJ11AHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ11AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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