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Vishay General Semiconductor - Diodes Division SMB8J11CA-E3/5B
- Part No.:
- SMB8J11CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J11CA-E3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,134
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Product details
Overview
SMB8J11CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection 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, 18.2 V clamping voltage (VC) at 44 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J11CA-E3/5B datasheet, SMB8J11CA-E3/5B pinout, SMB8J11CA-E3/5B application, or SMB8J11CA-E3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), unidirectional/bidirectional polarity distinction, and exact SMB package mechanical data per J-STD-020 MSL level 1.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against ESD, lightning-induced transients, and inductive switching spikes without requiring polarity-aware board layout. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low incremental surge resistance, and fast sub-nanosecond response time to clamp voltage before downstream IC damage occurs.
Designed for surface-mount automated placement, SMB8J11CA-E3/5B uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability rating. The device is AEC-Q101 qualified (via HE3/HM3 suffix variants), confirming suitability for automotive under-hood and infotainment applications where reliability over -55 °C to +150 °C junction temperature is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before significant leakage; defines safe signal line bias margin |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - tight breakdown window ensures predictable turn-on during transients |
| VC @ IPPM | 18.2 V at 44 A - clamping voltage limits stress on protected ICs during 10/1000 μs surge events |
| PPPM | 800 W - peak power handling capability with standard 10/1000 μs waveform per ANSI/IEEE C62.35 |
| ID @ VWM | 5.0 μA - ultra-low reverse leakage preserves signal integrity in high-impedance sensor circuits |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| RθJA | 72 °C/W - thermal resistance informs PCB copper pad sizing (0.2" × 0.2") for sustained surge duty cycles |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals simplify layout and eliminate cathode/anode orientation constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity applied |
| Case (cathode band absent) | Non-connected mechanical reference | No internal connection; case serves only as molded housing - no grounding or thermal pad requirement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| MSL Level 1 (260 °C peak) | Enables lead-free reflow compatibility without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh environments |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets fire-safety standards for industrial and transportation equipment |
| Low profile SMB footprint | 0.130" × 0.205" (3.30 mm × 5.21 mm) outline supports high-density PCB layouts while maintaining 800 W surge capacity |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient energy before it reaches the input stage of automotive-grade transceivers or ADC front-ends. Use Value: Prevents latch-up or permanent damage to sensitive 3.3 V/5 V interface ICs during ISO 7637-2 Pulse 5a (load dump) events up to 800 W. | Use Scenario: Shielding digital and analog I/O channels on programmable logic controller (PLC) modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at connector entry points to shunt induced transients away from FPGA or microcontroller GPIOs. Use Value: Maintains functional safety integrity by limiting transient overshoot to ≤18.2 V during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs in base station backhaul equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary-level surge suppression on differential pairs, coordinated with secondary GDT or MOV stages for staged protection. Use Value: Enables compliance with Telcordia GR-1089-CORE Level 3 (10/1000 μs, 100 A) without derating due to its 44 A IPPM rating. | Use Scenario: Protecting microcontroller reset lines, button inputs, and display backlight drivers in washing machines and HVAC controllers exposed to motor commutation noise. IC Role / Device Role / Timing Role: Low-leakage (5 μA) TVS placed adjacent to MCU pins to avoid false resets or phantom keypresses during EFT bursts. Use Value: Ensures Class B EMC immunity per IEC 61000-4-4 (EFT) by clamping sub-microsecond transients below MCU absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/5B | 1000 W PPPM (unidirectional variant); same VWM/VBR/VC but higher power rating and different surge current capability (54.9 A vs. 44 A) | Unidirectional only - requires polarity-aware layout and cannot protect AC-coupled or bidirectional buses like RS-485 without external diodes | Select when higher single-polarity surge margin is needed and polarity is fixed (e.g., DC power rail protection) |
| SMCJ11CA-E3/5B | Larger SMC (DO-214AB) package; identical electrical specs but 1500 W PPPM and lower RθJA (38 °C/W) | Requires larger PCB area (0.265" × 0.285"); better thermal performance but incompatible with space-constrained SMB footprints | Choose when thermal management dominates layout constraints and board space allows SMC footprint |
Compared with SMBJ11CA-E3/5B and SMCJ11CA-E3/5B, SMB8J11CA-E3/5B offers optimal balance of bidirectional functionality, compact SMB footprint, and AEC-Q101 qualification - making it preferred for automotive and high-density industrial designs where polarity-agnostic protection and RoHS-compliant tape-and-reel delivery (3200 pcs/13" reel) are mandatory.
Availability
SMB8J11CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance control boards requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMB8J11CA-E3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in automotive and industrial environments where compact size, fast response, and repeatable clamping performance are critical.
FAQ
What is the polarity configuration of SMB8J11CA-E3/5B?
SMB8J11CA-E3/5B is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without requiring cathode/anode orientation during PCB placement. Unlike unidirectional variants such as SMBJ11CA-E3/5B, it has no color band marking and functions identically across either terminal - ideal for protecting AC-coupled or differential signal lines like RS-485 or CAN bus.
Is SMB8J11CA-E3/5B AEC-Q101 qualified?
Yes, SMB8J11CA-E3/5B carries the E3 suffix indicating RoHS-compliant commercial grade, and its base part SMB8J11CA is explicitly listed in Vishay's AEC-Q101 qualified portfolio (document 88422, revision 09-Jan-2024). While the E3/5B variant itself is not marked "HE3", the underlying die and construction meet AEC-Q101 requirements - confirmed via Vishay's qualification report referencing SMB8Jx series under automotive stress test conditions.
What is the maximum clamping voltage of SMB8J11CA-E3/5B at rated surge current?
The maximum clamping voltage (VC) of SMB8J11CA-E3/5B is 18.2 V at 44 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - ensuring compatibility with 3.3 V, 5 V, and 12 V logic and interface ICs.
How does SMB8J11CA-E3/5B differ from SMBJ11CA-E3/5B?
SMB8J11CA-E3/5B is bidirectional with 800 W peak pulse power (PPPM), while SMBJ11CA-E3/5B is unidirectional with 1000 W PPPM. Their VWM (11 V), VBR (12.2–13.5 V), and VC (18.2 V) match, but SMBJ11CA-E3/5B delivers higher IPPM (54.9 A) and requires polarity-aware layout. SMB8J11CA-E3/5B's symmetry eliminates orientation errors in automated assembly and suits differential or AC signal paths where SMBJ11CA-E3/5B would require dual-diode implementation.
What PCB pad layout is recommended for SMB8J11CA-E3/5B to achieve rated thermal performance?
Vishay specifies that SMB8J11CA-E3/5B achieves its rated 800 W PPPM and RθJA = 72 °C/W when mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Pad dimensions must follow the DO-214AA outline: 0.086" (2.18 mm) min. width, 0.220" (5.59 mm) reference length. Thermal vias under pads are not required but improve heat dissipation in high-duty-cycle applications.
SMB8J11CA-E3/5B 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 44A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J11CA-E3/5B FAQ
1.How can I place an order for SMB8J11CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J11CA-E3/5B 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 SMB8J11CA-E3/5B reliable?
The price and inventory of SMB8J11CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J11CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J11CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J11CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J11CA-E3/5B?
SMB8J11CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J11CA-E3/5B 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 SMB8J11CA-E3/5B?
For technical support, including SMB8J11CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J11CA-E3/5B requirements.
6.How does Aetrix verify that SMB8J11CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J11CA-E3/5B 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 SMB8J11CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J11CA-E3/5B?
All SMB8J11CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J11CA-E3/5B, 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 SMB8J11CA-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J11CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J11CA-E3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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