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Vishay General Semiconductor - Diodes Division SMB8J6.5C-E3/52
- Part No.:
- SMB8J6.5C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5C-E3/52.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J6.5C-E3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for clamping ESD and surge transients on signal/power lines. It features 6.5 V stand-off voltage (VWM), 11.2 V maximum clamping voltage (VC) at 1000 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 SMB8J6.5C-E3/52 datasheet, SMB8J6.5C-E3/52 pinout, SMB8J6.5C-E3/52 application, or SMB8J6.5C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant matte tin terminations, and thermal resistance (RθJA = 72 °C/W) under PCB pad constraints.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) of 7.22–7.98 V at 10 mA test current, enabling robust protection against bidirectional transients such as EFT and lightning-induced surges. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns), critical for safeguarding high-speed analog and digital signal paths.
Thermal performance is defined by RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), requiring minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 800 W dissipation. The device meets MSL Level 1 (260 °C reflow peak) and is qualified to AEC-Q101 for automotive under-hood and chassis applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum reverse stand-off voltage before clamping begins; defines safe operating window for protected circuitry |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - ensures reliable breakdown initiation within tight tolerance for consistent surge response |
| VC @ IPPM | 11.2 V at IPPM = 1000 A (10/1000 μs) - limits voltage seen by downstream ICs during worst-case surge events |
| PPPM | 800 W - peak pulse power handling capacity under standardized surge waveform; determines survivability in IEC 61000-4-5 tests |
| ID @ VWM | <1.0 μA - ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes |
| TJ max | 150 °C - enables operation in under-hood automotive environments and industrial enclosures without derating |
| Package | DO-214AA (SMB) - surface-mount footprint compatible with automated placement; 0.220" × 0.155" body with cathode band marking |
Pinout & Package
DO-214AA (SMB) package: bi-directional device with no polarity marking; symmetrical two-terminal construction. Cathode band absent - terminals are interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Terminals 1 & 2) | Bi-directional surge path | Both terminals serve identical clamping function; connected across protected line and ground (or between differential lines) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal stress and humidity exposure |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or baking |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability and JESD22-B102 wetting requirements; JESD201 Class 1A whisker resistant |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in safety-critical systems |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤11.2 V during 1000 A surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Shielding PLC digital input modules from inductive kickback and EFT bursts on 24 V DC field wiring. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at connector entry point. Use Value: Absorbs 800 W of pulse energy without degradation, maintaining <1.0 μA leakage to avoid false triggering in high-impedance sensing circuits. |
| Consumer USB Port ESD Protection | Telecom Line Interface |
Use Scenario: Safeguarding USB 2.0 D+/D− lines against ±15 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp integrated into USB connector subcircuit. Use Value: Clamps ESD events within <1 ns while adding negligible signal distortion due to absence of polarity marking and symmetric structure. |
Use Scenario: Protecting Ethernet PHY front-end and PoE injectors from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: First-stage transient suppressor in hybrid protection scheme with gas discharge tube (GDT). Use Value: Provides precise 6.5 V stand-off to avoid interference with 5 V bias networks while clamping to 11.2 V to prevent PHY damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5A-E3/52 | Uni-directional variant; 9.2 V clamping at 108.7 A (not 1000 A); same VWM and VBR range | Requires explicit cathode orientation; unsuitable for AC or differential signal lines | Select only when protecting DC-biased unidirectional paths (e.g., 5 V supply rail) where polarity is fixed |
| SMAJ6.5CA-E3/61 | Same bi-directional function but in smaller DO-214AC (SMA) package; lower PPPM = 400 W; VC = 11.2 V at IPPM = 400 A | Limited to lower-energy transients; not rated for AEC-Q101 | Use where board space is constrained and surge threat level is below IEC 61000-4-5 Level 3 (e.g., consumer peripherals) |
Compared with SMB8J6.5C-E3/52, the uni-directional SMB8J6.5A-E3/52 requires careful layout alignment and offers lower surge margin, while SMAJ6.5CA-E3/61 trades power handling and automotive qualification for compactness - making SMB8J6.5C-E3/52 optimal for high-reliability bidirectional protection where 800 W capability and AEC-Q101 compliance are mandatory.
Availability
SMB8J6.5C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, and telecom line interface designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB8J6.5C-E3/52 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 and application-specific performance.
The SMB8JxxC-A series delivers AEC-Q101-qualified bi-directional TVS diodes optimized for automotive and industrial surge immunity - engineered to meet stringent IEC 61000-4-5 and ISO 7637-2 requirements in harsh environments.
FAQ
What is the clamping voltage of SMB8J6.5C-E3/52 at its rated peak pulse current?
The SMB8J6.5C-E3/52 has a maximum clamping voltage (VC) of 11.2 V when subjected to a 10/1000 μs surge waveform at its rated peak pulse current of 1000 A. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures downstream ICs experience limited overvoltage during transient events. The SMB8J6.5C-E3/52 maintains this clamping performance across its specified operating temperature range.
Is SMB8J6.5C-E3/52 suitable for automotive applications?
Yes, SMB8J6.5C-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its thermal resistance (RθJA = 72 °C/W), 150 °C maximum junction temperature, and MSL Level 1 reflow compatibility support under-hood deployment. The SMB8J6.5C-E3/52 also meets ISO 7637-2 pulse test requirements when applied with appropriate PCB layout per Vishay's recommended 0.2" × 0.2" copper pads.
How does SMB8J6.5C-E3/52 differ from SMB8J6.5A-E3/52?
SMB8J6.5C-E3/52 is bi-directional with no polarity marking, while SMB8J6.5A-E3/52 is uni-directional and marked with a cathode band. Their clamping voltages differ significantly: SMB8J6.5C-E3/52 clamps at 11.2 V @ 1000 A, whereas SMB8J6.5A-E3/52 clamps at 9.2 V @ 108.7 A. The SMB8J6.5C-E3/52 supports symmetric surge suppression on AC or differential lines, unlike the SMB8J6.5A-E3/52 which requires correct orientation on DC rails.
What is the leakage current specification for SMB8J6.5C-E3/52 at its stand-off voltage?
At its 6.5 V stand-off voltage (VWM), the SMB8J6.5C-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor circuits and minimizes standby power loss in battery-operated systems. The SMB8J6.5C-E3/52 maintains leakage below 5.0 μA up to 125 °C, supporting wide-temperature industrial deployments.
Does SMB8J6.5C-E3/52 require special PCB layout considerations?
Yes - to achieve its rated 800 W peak pulse power, the SMB8J6.5C-E3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2. Smaller pads cause thermal derating and reduced surge survivability. The SMB8J6.5C-E3/52 also benefits from short, direct traces to ground plane to minimize inductance and preserve clamping speed.
SMB8J6.5C-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 65A
- 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)
SMB8J6.5C-E3/52 FAQ
1.How can I place an order for SMB8J6.5C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5C-E3/52 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 SMB8J6.5C-E3/52 reliable?
The price and inventory of SMB8J6.5C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J6.5C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5C-E3/52?
SMB8J6.5C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5C-E3/52 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 SMB8J6.5C-E3/52?
For technical support, including SMB8J6.5C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5C-E3/52 requirements.
6.How does Aetrix verify that SMB8J6.5C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5C-E3/52 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 SMB8J6.5C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J6.5C-E3/52?
All SMB8J6.5C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5C-E3/52, 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 SMB8J6.5C-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J6.5C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5C-E3/52 Tags
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