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Vishay General Semiconductor - Diodes Division SMB8J6.0CAHE3/5B
- Part No.:
- SMB8J6.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.0CAHE3/5B.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
SMB8J6.0CAHE3/5B 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 6.0 V stand-off voltage (VWM), 10.3 V maximum clamping voltage (VC) at 2000 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 SMB8J6.0CAHE3/5B datasheet, SMB8J6.0CAHE3/5B pinout, SMB8J6.0CAHE3/5B application, or SMB8J6.0CAHE3/5B equivalent, key selection criteria include AEC-Q101 qualification, bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.72), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients per IEC 61000-4-2/4-5. Its bidirectional architecture provides symmetrical clamping above ±6.0 V without polarity dependence, enabling protection of AC-coupled or differential signal paths such as CAN FD or LIN bus stubs.
The device operates across –55 °C to +150 °C junction temperature range and exhibits 1.0 µA max reverse leakage at VWM, ensuring minimal standby power impact in battery-powered systems. Thermal resistance is 20 °C/W (junction-to-lead), supporting reliable power dissipation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 5 V logic or 6 V supply rails. |
| VBR (min/max) | 6.67 V / 7.37 V at 10 mA - Ensures consistent breakdown initiation across production lots and temperature. |
| VC @ IPPM | 10.3 V at 2000 A (10/1000 µs) - Limits downstream voltage stress during worst-case surge events. |
| PPPM | 800 W - Sustains high-energy transients common in automotive load-dump or inductive switching scenarios. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
| MSL Level | Level 1 (260 °C peak reflow) - Supports standard lead-free SMT assembly without baking or special handling. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetric dual-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity; enables bidirectional clamping without orientation constraints. |
| Case (exposed metal slug) | Thermal conduction path | Integral heat-spreading element connected to internal die; requires direct thermal pad connection for RθJL = 20 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling stress. |
| Low clamping ratio (VC/VWM) | 1.72 - Minimizes overvoltage exposure to protected ICs compared to higher-ratio alternatives. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor modules requiring zero-failure field performance. |
| MSL Level 1 rating | Eliminates pre-bake requirement and supports high-throughput reflow in standard SMT lines. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 suffix adds halogen-free molding compound for stringent environmental programs. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between connector and transceiver input, responding within <1 ns to transients up to 2000 A. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers while maintaining signal integrity due to low capacitance and symmetric clamping. | Use Scenario: Shielding digital input modules in programmable logic controllers from induced surges on 24 V DC field wiring exposed to relay switching noise. IC Role / Device Role / Timing Role: Primary surge suppression device located at PCB edge connector, shunting energy before it reaches optocoupler or MCU GPIO. Use Value: Withstands repeated 800 W surges without degradation, extending system uptime and reducing field failure rates in factory automation environments. |
| USB 2.0 Data Line Protection | Smart Meter Communication Port |
Use Scenario: Safeguarding D+ and D– lines in USB host ports against ESD events and cable discharge in consumer and industrial docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at USB connector, operating below 5 V VWM to avoid signal distortion. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 to <10.3 V, preserving eye diagram integrity and ensuring USB 2.0 high-speed timing compliance. | Use Scenario: Securing RS-485 communication ports in utility smart meters subjected to lightning-induced surges on long outdoor runs. IC Role / Device Role / Timing Role: First-line transient suppressor on differential pair, coordinated with GDT or MOV secondary protection stages. Use Value: Delivers 800 W surge handling with tight VC control, preventing false resets and data corruption during grid-level transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.0CA-E3/5B | Unqualified for AEC-Q101; same VWM, VC, and PPPM; commercial-grade only. | Limited to non-automotive industrial or consumer use where automotive qualification is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle assurance. |
| SMCJ6.0CAHE3/5B | Same AEC-Q101 qualification but in larger SMC (DO-214AB) package; 1500 W PPPM, higher IPPM (3000 A). | Better suited for higher-energy threats (e.g., ISO 16750-2 pulse 5a) where board space allows larger footprint. | Choose when surge threat level exceeds 800 W and thermal design accommodates larger thermal mass. |
Compared with SMBJ6.0CA-E3/5B and SMCJ6.0CAHE3/5B, SMB8J6.0CAHE3/5B uniquely balances AEC-Q101 compliance, SMB footprint, and 800 W capability - making it optimal for space-constrained automotive modules requiring validated reliability without over-engineering.
Availability
SMB8J6.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and USB interface safeguarding requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB8J6.0CAHE3/5B 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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, high-power-density solutions for automotive and industrial markets.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform engineered specifically for AEC-Q101-compliant, high-surge-capacity protection in compact surface-mount packages targeting next-generation vehicle electrification and Industry 4.0 control systems.
FAQ
What is the clamping voltage of SMB8J6.0CAHE3/5B at its rated peak pulse current?
The SMB8J6.0CAHE3/5B has a maximum clamping voltage (VC) of 10.3 V when subjected to its rated 2000 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 5 V or 6 V ICs. The SMB8J6.0CAHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMB8J6.0CAHE3/5B suitable for automotive applications?
Yes, SMB8J6.0CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its qualification covers HTGB, HTRB, temperature cycling, and mechanical shock testing. The HE3 suffix confirms RoHS compliance and automotive-grade screening - making SMB8J6.0CAHE3/5B appropriate for safety-critical and under-hood deployments.
How does the bidirectional configuration of SMB8J6.0CAHE3/5B affect circuit layout?
The SMB8J6.0CAHE3/5B has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of reverse installation. It must be placed across the protected line and ground (or differential pair) with symmetric trace routing to preserve impedance balance. No cathode/anode assignment is needed - unlike unidirectional TVS diodes - which reduces assembly errors and supports automated optical inspection.
What is the thermal resistance specification for SMB8J6.0CAHE3/5B?
The SMB8J6.0CAHE3/5B has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, measured with proper soldering to minimum recommended copper pads (0.2" × 0.2" / 5.0 mm × 5.0 mm per terminal). This enables effective heat transfer during repetitive surge events. Its junction-to-ambient (RθJA) is 72 °C/W - meaning thermal performance depends heavily on PCB copper area and airflow, especially in sealed enclosures.
Does SMB8J6.0CAHE3/5B meet moisture sensitivity level requirements for lead-free reflow?
Yes, SMB8J6.0CAHE3/5B meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. It can be processed in standard lead-free SMT reflow ovens without preconditioning or dry-pack requirements. This eliminates baking steps and supports high-yield, high-volume manufacturing - a critical advantage for automotive Tier 1 suppliers using SMB8J6.0CAHE3/5B in ECU production.
SMB8J6.0CAHE3/5B 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):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 77.7A
- 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)
SMB8J6.0CAHE3/5B FAQ
1.How can I place an order for SMB8J6.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.0CAHE3/5B 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 SMB8J6.0CAHE3/5B reliable?
The price and inventory of SMB8J6.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J6.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.0CAHE3/5B?
SMB8J6.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.0CAHE3/5B 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 SMB8J6.0CAHE3/5B?
For technical support, including SMB8J6.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.0CAHE3/5B requirements.
6.How does Aetrix verify that SMB8J6.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J6.0CAHE3/5B 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 SMB8J6.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J6.0CAHE3/5B?
All SMB8J6.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.0CAHE3/5B, 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 SMB8J6.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J6.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.0CAHE3/5B Tags
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