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Vishay General Semiconductor - Diodes Division SMB8J11CAHE3/5B
- Part No.:
- SMB8J11CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J11CAHE3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,704
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Product details
Overview
SMB8J11CAHE3/5B 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 12.2 V minimum breakdown voltage (VBR), 11 V stand-off voltage (VWM), 18.2 V maximum clamping voltage (VC) at 44.0 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 SMB8J11CAHE3/5B datasheet, SMB8J11CAHE3/5B pinout, SMB8J11CAHE3/5B application, or SMB8J11CAHE3/5B equivalent, this AEC-Q101 qualified TVS offers validated clamping performance, low leakage (<5 µA at VWM), and MSL Level 1 reflow compatibility - critical for automotive-grade ESD/surge co-design and board-level reliability validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against voltage transients induced by inductive switching, ESD, and lightning surges without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±10%) and low incremental surge resistance, supporting fast response time (<1 ns) and repeatable clamping behavior under repetitive surge stress.
The device is rated for -55 °C to +150 °C operating junction temperature and exhibits 72 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads. Its AEC-Q101 qualification confirms suitability for automotive powertrain and body electronics where long-term reliability under thermal cycling and humidity bias is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 12.2 V / 13.5 V at 1.0 mA test current - defines reliable conduction onset threshold for bidirectional surge clamping |
| VWM | 11 V - maximum continuous reverse working voltage before leakage exceeds 5 µA; sets safe operating margin below VBR |
| VC @ IPPM | 18.2 V at 44.0 A (10/1000 µs) - limits protected circuit voltage during worst-case surge, preserving downstream IC integrity |
| PPPM | 800 W - peak transient energy absorption capability under standardized surge waveform; enables single-device protection for moderate-power lines |
| IPPM | 44.0 A - peak surge current handling capacity; determines survivability against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 events |
| Junction Temp Range | -55 °C to +150 °C - supports operation in under-hood automotive environments and industrial enclosures without derating |
| AEC-Q101 Qualified | Yes - verified for automotive applications including engine control modules, ADAS sensors, and infotainment power rails |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or floating signal line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | Either terminal serves as anode or cathode depending on transient polarity; no color band or marking required |
| Cathode Band (N/A) | N/A - bidirectional device | No polarity identification needed; simplifies layout and eliminates orientation errors during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD22 standards |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning - compatible with standard SMT assembly lines |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; prevents parameter drift under humidity and thermal stress |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic and analog front-ends |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 suffix adds halogen-free molding compound for stringent environmental compliance |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units against load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ASIC input pins. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (100 V/2 Ω) while surviving >1000 surge cycles due to low thermal resistance and AEC-Q101 validation. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring exposed to relay coil flyback and EMI coupling. IC Role / Device Role / Timing Role: Primary surge suppression device mounted adjacent to terminal block to clamp fast-rising transients before optocoupler or microcontroller input stage. Use Value: Limits clamped voltage to 18.2 V - well below 30 V absolute maximum rating of common industrial GPIOs - preventing latch-up and permanent damage. |
| USB Type-C Port Protection | Telecom Line Interface |
|
Use Scenario: Secondary-level surge protection for USB Type-C CC and VCONN lines in docking stations and host controllers subjected to system-level ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed after primary ESD array to handle higher-energy surges that bypass front-end protection. Use Value: Delivers 800 W surge handling with <5 µA leakage at 11 V - avoids signal distortion on high-speed lines while meeting IEC 61000-4-2 Level 4 (15 kV air/8 kV contact). |
Use Scenario: Protecting Ethernet PHY interface transformers and PoE-powered device inputs against lightning-induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: First-stage clamping device on secondary side of isolation transformer to limit common-mode surge energy entering silicon. Use Value: Withstands 44.0 A peak current at 10/1000 µs waveform - satisfies IEC 61000-4-5 Combination Wave (10/700 µs) Level 3 requirements when used with appropriate series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CAHE3/5B | Unqualified version (no AEC-Q101); identical electrical specs but not certified for automotive use | Limited to commercial/industrial applications where automotive qualification is not mandated | Select when cost sensitivity outweighs automotive compliance requirements and lifecycle validation is not required |
| SMCJ11CAHE3/5B | Same VBR/VC but in larger SMC (DO-214AB) package; 1500 W PPPM, 129 A IPPM | Used where higher surge energy handling is needed - e.g., main power rail protection vs. signal line | Choose when surge threat level exceeds 800 W or PCB layout allows larger footprint for enhanced thermal dissipation |
Compared with SMBJ11CAHE3/5B, SMB8J11CAHE3/5B provides AEC-Q101 assurance for automotive deployment; versus SMCJ11CAHE3/5B, it trades surge capacity for compact SMB footprint - making it optimal for space-constrained, high-reliability signal-line protection.
Availability
SMB8J11CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, USB Type-C port hardening, and telecom line interface applications requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for SMB8J11CAHE3/5B 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, MOSFETs, optoelectronics, and passive components 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, surface-mount surge protection in automotive, industrial, and communications systems where AEC-Q101 compliance and consistent clamping performance are essential.
FAQ
What is the clamping voltage of SMB8J11CAHE3/5B at its rated peak pulse current?
The SMB8J11CAHE3/5B has a maximum clamping voltage (VC) of 18.2 V at 44.0 A peak pulse current (IPPM) under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting during surge events. The SMB8J11CAHE3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for under-hood automotive applications.
Is SMB8J11CAHE3/5B suitable for bidirectional signal line protection?
Yes, SMB8J11CAHE3/5B is explicitly designed as a bidirectional TVS diode, with symmetrical breakdown characteristics (12.2 V to 13.5 V in both directions) and no polarity marking. It protects AC-coupled or floating lines such as RS-485, CAN FD, and USB differential pairs without requiring orientation verification during placement. The SMB8J11CAHE3/5B delivers matched clamping in either direction, ensuring consistent protection regardless of transient polarity.
Does SMB8J11CAHE3/5B meet automotive qualification standards?
Yes, SMB8J11CAHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88422, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its reliability for automotive powertrain, chassis, and body electronics. The HE3 suffix explicitly denotes AEC-Q101 compliance and RoHS conformity.
What is the maximum leakage current of SMB8J11CAHE3/5B at its stand-off voltage?
The SMB8J11CAHE3/5B exhibits a maximum reverse leakage current (ID) of 5.0 µA at its 11 V stand-off voltage (VWM), measured at 25 °C. This low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive sensor bias networks or industrial 4–20 mA loop receivers. The SMB8J11CAHE3/5B maintains leakage below 10 µA even at elevated temperatures up to 85 °C.
What package type and mounting compatibility does SMB8J11CAHE3/5B use?
SMB8J11CAHE3/5B uses the SMB (DO-214AA) surface-mount package, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. It is rated MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature. The SMB8J11CAHE3/5B is supplied in 13" plastic tape and reel (3200 units per reel, code "5B"), optimized for high-speed pick-and-place assembly without pre-baking.
SMB8J11CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J11CAHE3/5B FAQ
1.How can I place an order for SMB8J11CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J11CAHE3/5B 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 SMB8J11CAHE3/5B reliable?
The price and inventory of SMB8J11CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J11CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J11CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J11CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J11CAHE3/5B?
SMB8J11CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J11CAHE3/5B 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 SMB8J11CAHE3/5B?
For technical support, including SMB8J11CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J11CAHE3/5B requirements.
6.How does Aetrix verify that SMB8J11CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J11CAHE3/5B 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 SMB8J11CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J11CAHE3/5B?
All SMB8J11CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J11CAHE3/5B, 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 SMB8J11CAHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J11CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J11CAHE3/5B Tags
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