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Vishay General Semiconductor - Diodes Division SMBJ11CAHE3_B/H
- Part No.:
- SMBJ11CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHE3_B/H.pdf
- Description:
- 600W,11V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,512
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Product details
Overview
SMBJ11CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤18.2 V at 33 A peak surge current - used in industrial sensor interface protection and automotive body control modules.
For engineers reviewing the SMBJ11CAHE3_B/H datasheet, SMBJ11CAHE3_B/H pinout, SMBJ11CAHE3_B/H application, or SMBJ11CAHE3_B/H equivalent, this device is selected for robust ESD and lightning surge immunity in bidirectional AC-coupled or floating signal paths where polarity-agnostic clamping is required.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of differential or ungrounded lines without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad layout.
The device complies with AEC-Q101 for automotive applications and meets UL 497B recognition (QVGQ2). Its 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35, with clamping performance validated at 33 A IPPM and 18.2 V VC - critical for safeguarding downstream MOSFET gates and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - guaranteed breakdown range ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | ≤18.2 V at 33 A - clamped voltage seen by protected circuit during 600 W transient, limiting stress on downstream ICs |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 µs waveform, supporting IEC 61000-4-5 Level 3/4 surges |
| IPPM | 33 A - maximum non-repetitive surge current the device safely diverts without degradation |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking on case. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Identical bidirectional conduction - either terminal serves as input/output; no cathode band marking |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment |
| AEC-Q101 qualified (HE3 suffix) | Validated reliability for automotive electronics including BCM, infotainment, and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during fast transients, protecting 3.3 V/5 V logic and analog components |
| UL 497B recognized (QVGQ2) | Confirms suitability for telecom and data line protection in safety-certified end equipment |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting RS-485/RS-422 differential signal lines in factory automation PLCs against EFT and surge coupling from nearby motor drives. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair, shunting transients before they reach transceiver IC inputs. Use Value: Maintains signal integrity during 4 kV EFT bursts by limiting common-mode voltage excursion to <18.2 V, preventing receiver latch-up. |
Use Scenario: Safeguarding LIN bus communication lines between door modules and central body controller against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between LIN line and chassis ground, absorbing negative-going spikes and positive surges symmetrically. Use Value: Enables reliable operation under ISO 7637-2 Pulse 1 (−150 V, 2 Ω) and Pulse 2a (+100 V) by clamping within 1 ns and surviving 33 A peak current. |
| Consumer Power Adapter Input | Telecom Ethernet Surge Protection |
Use Scenario: Secondary-side DC output protection in USB-C PD adapters against reverse-connected surges and hot-plug transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across +VOUT and GND to suppress both polarity transients induced by cable coupling or inductive switching. Use Value: Prevents damage to downstream DC-DC controllers and USB-PD policy engines by limiting output rail excursions to ≤18.2 V during 600 W surges. |
Use Scenario: Primary-stage protection on 10/100BASE-TX Ethernet PHY magnetics secondary side in VoIP phones and IP cameras. IC Role / Device Role / Timing Role: Common-mode TVS array element (used per line pair) suppressing asymmetric surges entering via RJ45 jack. Use Value: Meets GR-1089-CORE Level 3 (2 kV ring wave) by clamping differential transients to <18.2 V without degrading 100 MHz signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, identical SMB package | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance mandates | Select when cost sensitivity outweighs automotive qualification requirements and lifecycle assurance is not mandated |
| SAC11CA | Same VWM and VC, but lower PPPM (400 W), SOD-123FL package (smaller footprint, higher thermal resistance) | Lower surge capacity and reduced thermal performance limit use to low-energy consumer interfaces | Choose only for space-constrained, non-automotive applications with ≤400 W surge exposure and verified thermal margin |
Compared with SMBJ11CAHE3_B/H, SMBJ11CA-E3/52 offers identical electrical protection but omits AEC-Q101 validation and traceability, while SAC11CA trades surge robustness and thermal capability for miniaturization - making SMBJ11CAHE3_B/H the optimal choice for automotive and high-reliability industrial deployments requiring full 600 W immunity and extended temperature operation.
Availability
SMBJ11CAHE3_B/H is available at Aetrix Electronics and suitable for industrial sensor interface protection, automotive body control modules, and telecom Ethernet surge protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ11CAHE3_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, precision, and application-specific optimization.
The SMBJ series was developed for high-energy transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 qualification, and UL recognition in compact surface-mount packages.
FAQ
What is the clamping voltage of SMBJ11CAHE3_B/H at its rated peak pulse current?
The SMBJ11CAHE3_B/H clamps to a maximum of 18.2 V at its rated peak pulse current of 33 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads per terminal and represents the upper limit of voltage imposed on protected circuitry during surge events. The SMBJ11CAHE3_B/H maintains this clamping performance across its qualified operating temperature range.
Is SMBJ11CAHE3_B/H suitable for automotive applications?
Yes, SMBJ11CAHE3_B/H is AEC-Q101 qualified and specifically intended for automotive use. The "HE3" suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated for reliability under temperature cycling, humidity, mechanical shock, and surge stress relevant to body electronics, infotainment, and sensor modules. Its +150 °C maximum junction temperature and UL 497B recognition further support deployment in automotive environments.
How does the bidirectional design of SMBJ11CAHE3_B/H affect its circuit placement?
The SMBJ11CAHE3_B/H has no polarity marking and conducts identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, it eliminates orientation errors during automated assembly and enables single-part inventory for both polarities, simplifying BOM management without compromising protection efficacy.
What is the thermal resistance of SMBJ11CAHE3_B/H, and how does it impact PCB layout?
The SMBJ11CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 board material and natural convection; reducing RθJA requires increased copper area or internal planes. Proper pad sizing is essential to sustain repetitive surge duty cycles and avoid thermal runaway during high-frequency transient events.
Does SMBJ11CAHE3_B/H meet any safety certifications?
Yes, SMBJ11CAHE3_B/H is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766. This certification confirms its suitability for use in telecommunications, data line, and low-voltage power applications where safety agency approval is required. The device also meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing, supporting robust manufacturing and field reliability.
SMBJ11CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ11CAHE3_B/H FAQ
1.How can I place an order for SMBJ11CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHE3_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 SMBJ11CAHE3_B/H reliable?
The price and inventory of SMBJ11CAHE3_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 SMBJ11CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHE3_B/H?
SMBJ11CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHE3_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 SMBJ11CAHE3_B/H?
For technical support, including SMBJ11CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ11CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHE3_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 SMBJ11CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHE3_B/H?
All SMBJ11CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHE3_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 SMBJ11CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ11CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHE3_B/H Tags
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