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Vishay General Semiconductor - Diodes Division SMB8J6.5CHE3/52
- Part No.:
- SMB8J6.5CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CHE3/52.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
SMB8J6.5CHE3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and 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 SMB8J6.5CHE3/52 datasheet, SMB8J6.5CHE3/52 pinout, SMB8J6.5CHE3/52 application, or SMB8J6.5CHE3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), clamping performance under surge, and bi-directional polarity confirmation - all critical for ESD/surge co-design in harsh-environment electronics.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity dependency. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while meeting J-STD-020 MSL Level 1 (260 °C reflow peak).
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJL = 20 °C/W to leads - supporting reliable power dissipation in compact PCB layouts. Its 10/1000 μs surge response and sub-nanosecond turn-on time provide effective suppression of lightning-induced transients and inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse stand-off voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Verified breakdown voltage range ensuring consistent triggering across production lots. |
| VC @ IPPM | 11.2 V at 1000 A - Clamping voltage under full-rated 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 800 W - Peak pulse power handling capability with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage at rated stand-off voltage, minimizing standby power loss in battery-powered systems. |
| TJ max | +150 °C - Maximum junction temperature rating supporting operation in under-hood automotive and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminal design allows either end to serve as anode or cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Non-marked terminal (bi-directional) | No functional polarity; terminals are interchangeable - simplifies layout and eliminates orientation errors during placement. |
| Anode End | Non-marked terminal (bi-directional) | Identical electrical behavior to opposite terminal; enables bidirectional clamping on AC or floating lines without external biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of differential pairs (e.g., RS-485, CAN bus) without external diode bridges or polarity constraints. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and lifetime reliability. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak - compatible with high-volume automated assembly without pre-baking. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, low leakage, and immunity to moisture-induced parameter drift in humid environments. |
| Low RθJA | 72 °C/W thermal resistance enables effective self-heating management on standard 0.2" × 0.2" copper pads - reduces need for thermal vias. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensors connected to ECU inputs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector entry point to clamp ±100 V transients before reaching analog front-end or MCU GPIO. Use Value: Limits induced voltage to ≤11.2 V during 1000 A surge, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor interface ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs subject to ground bounce and cable discharge events. IC Role / Device Role / Timing Role: Placed across A/B differential pair to suppress common-mode surges while maintaining signal fidelity up to 10 Mbps. Use Value: Symmetrical clamping prevents data corruption during fast-rising transients, with <1.0 μA leakage preserving bus idle state stability. |
| Consumer USB-C Port | Smart Meter Power Line |
Use Scenario: Secondary-level surge protection on USB-C CC and VCONN lines in portable chargers and docking stations. IC Role / Device Role / Timing Role: Fast-response TVS absorbing ESD (IEC 61000-4-2 ±15 kV contact) and hot-swap transients before USB PD controller. Use Value: Sub-ns response and 11.2 V clamping prevent damage to 5 V tolerant CC logic, while DO-214AA footprint fits tight board space near connectors. |
Use Scenario: Coupling protection on AC mains input stage of smart electricity meters exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Front-end TVS shunting line-to-line transients before bridge rectifier and metering SoC power rails. Use Value: 800 W PPPM rating sustains multiple 6 kV/3 kA surges per IEC 61000-4-5, extending field life in outdoor utility deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CA-E3/52 | Same electrical specs and DO-214AA package, but commercial-grade (non-AEC-Q101 qualified); identical VWM, VC, and PPPM. | Lacks automotive qualification - suitable for consumer/industrial designs where AEC compliance is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and qualification documentation is unnecessary. |
| SMAJ6.5CA-E3/52 | Lower PPPM (400 W vs. 800 W), same VWM and VC; smaller DO-214AC (SMA) package with higher RθJA (110 °C/W). | Insufficient for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD or local switching noise. | Choose only for space-constrained non-automotive applications with verified surge energy ≤400 W. |
Compared with SMB8J6.5CA-E3/52 and SMAJ6.5CA-E3/52, SMB8J6.5CHE3/52 uniquely combines AEC-Q101 qualification, 800 W surge capacity, and DO-214AA thermal performance - making it the sole option for automotive-grade bi-directional protection where both reliability and energy handling are mandatory.
Availability
SMB8J6.5CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, and smart meter power line interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for SMB8J6.5CHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
SMB8J6.5CHE3/52 belongs to Vishay's TRANSZORB® family of high-power TVS diodes engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the polarity configuration of SMB8J6.5CHE3/52?
SMB8J6.5CHE3/52 is a bi-directional TVS diode with no polarity marking - both terminals are functionally identical and interchangeable. This enables symmetrical clamping on AC-coupled or differential signal lines without regard to orientation during PCB layout or assembly, reducing design and manufacturing complexity.
Is SMB8J6.5CHE3/52 qualified for automotive use?
Yes, SMB8J6.5CHE3/52 carries the HE3 suffix indicating AEC-Q101 qualification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev D - confirming suitability for under-hood and chassis-mounted automotive electronics where reliability is mission-critical.
What is the maximum clamping voltage of SMB8J6.5CHE3/52 under surge conditions?
The maximum clamping voltage (VC) of SMB8J6.5CHE3/52 is 11.2 V when subjected to its rated 1000 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream 3.3 V or 5 V ICs remain within absolute maximum ratings during surge events.
How does SMB8J6.5CHE3/52 differ from uni-directional variants like SMB10J6.5AHE3/52?
SMB8J6.5CHE3/52 is bi-directional with 800 W PPPM and no cathode band, whereas SMB10J6.5AHE3/52 is uni-directional with 1000 W PPPM and a marked cathode. The former protects AC/differential signals; the latter suits DC power rail or unidirectional data lines where polarity is fixed and higher energy handling is needed.
What is the thermal resistance of SMB8J6.5CHE3/52, and how does it affect PCB layout?
SMB8J6.5CHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This allows effective heat dissipation without additional thermal vias in most applications, though larger copper areas or internal layers further reduce steady-state temperature rise during repetitive surge events.
SMB8J6.5CHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J6.5CHE3/52 FAQ
1.How can I place an order for SMB8J6.5CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CHE3/52 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 SMB8J6.5CHE3/52 reliable?
The price and inventory of SMB8J6.5CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CHE3/52?
SMB8J6.5CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CHE3/52 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 SMB8J6.5CHE3/52?
For technical support, including SMB8J6.5CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CHE3/52 requirements.
6.How does Aetrix verify that SMB8J6.5CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CHE3/52 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 SMB8J6.5CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CHE3/52?
All SMB8J6.5CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CHE3/52, 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 SMB8J6.5CHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J6.5CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CHE3/52 Tags
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