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Vishay General Semiconductor - Diodes Division SM6T6V8AHM3_B/H
- Part No.:
- SM6T6V8AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8AHM3_B/H.pdf
- Description:
- 600W,6.8V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
SM6T6V8AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage at 57 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T6V8AHM3_B/H datasheet, SM6T6V8AHM3_B/H pinout, SM6T6V8AHM3_B/H application, or SM6T6V8AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, halogen-free RoHS compliance, and suitability for automotive-grade ESD/surge protection in compact surface-mount layouts.
Technical Context
The SM6T6V8AHM3_B/H operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 6.45–7.14 V breakdown range at 10 mA test current. Its low-inductance SMB package enables fast response to transients, while glass-passivated junction ensures stable leakage (<1000 μA at 5.8 V) and thermal robustness up to 150 °C junction temperature.
It delivers 600 W peak pulse power per 10/1000 μs waveform with 10.5 V clamping at 57 A, supporting IEC 61000-4-2/4-4/4-5 compliant protection. The device is rated for 100 A non-repetitive forward surge (10 ms half-sine) and meets MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche onset for reliable overvoltage triggering |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - clamping voltage limiting downstream IC stress during surge events |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| IFSM | 100 A - surge current handling for 10 ms half-sine, critical for load-dump immunity |
| TJ max | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C reflow compatible. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line; conducts when transient exceeds VWM, shunting current to ground |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 load dump and IEC 61000-4-5 surges in automotive ECUs |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets automotive OEM environmental requirements and supports lead-free assembly processes |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage stress on downstream MOSFETs, microcontrollers, and CAN transceivers |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns during high-volume SMT manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V/12 V supply lines in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches PMICs and microcontrollers. Use Value: Limits voltage excursion to ≤10.5 V during 57 A surges, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: Safeguarding analog input pins of industrial temperature/pressure sensors connected to long cables. IC Role / Device Role / Timing Role: Fast-acting surge shunt placed at connector entry point to absorb induced lightning/ESD transients. Use Value: Clamps 10/1000 μs surges within 1 ns, preserving sensor accuracy and avoiding false readings caused by overvoltage saturation. |
| Automotive CAN Bus Line Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary protection on CAN_H/CAN_L lines after common-mode choke, guarding against battery reverse connection and ESD. IC Role / Device Role / Timing Role: Standby clamping device that activates only during overvoltage events, drawing negligible quiescent current. Use Value: Maintains <1000 μA leakage at 5.8 V, ensuring bus integrity and meeting ISO 11898-2 DC parametric limits. | Use Scenario: Input-stage transient suppression in USB-C PD adapters and wall chargers exposed to AC line surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output before DC-DC regulation. Use Value: Withstands repeated 600 W pulses without degradation, extending adapter field life in regions with unstable mains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/5B | Same SMB package, 6.8 V VBR, but 400 W PPPM; no AEC-Q101 qualification | Rated for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing | Select when cost-sensitive non-automotive designs require basic 6.8 V clamping without automotive qualification |
| SMCJ6.8A-HM3 | Higher 1500 W PPPM, same VBR/VC, but larger SMC (DO-214AB) package | Requires 30% larger PCB area; suited for higher-energy surges where space permits | Choose when system-level surge tests exceed 600 W and layout allows SMC footprint |
Compared with SMAJ6.8A-E3/5B and SMCJ6.8A-HM3, the SM6T6V8AHM3_B/H uniquely balances AEC-Q101 compliance, 600 W capability, and minimal SMB footprint-making it optimal for space-constrained automotive modules requiring production-grade reliability.
Availability
SM6T6V8AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, CAN bus nodes, and consumer power adapters requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SM6T6V8AHM3_B/H 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 SM6T Series is engineered for high-speed transient suppression in automotive, industrial, and computing systems-delivering consistent clamping performance, AEC-Q101 validation, and halogen-free compliance in compact SMB packaging.
FAQ
What is the breakdown voltage tolerance for SM6T6V8AHM3_B/H?
The SM6T6V8AHM3_B/H has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, representing ±5% tolerance around the nominal 6.8 V rating. This tight distribution ensures predictable turn-on behavior across production lots and supports accurate system-level surge margin analysis in designs using the SM6T6V8AHM3_B/H.
Is SM6T6V8AHM3_B/H suitable for bidirectional transient protection?
No, the SM6T6V8AHM3_B/H is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SM6T6V8CA). Using SM6T6V8AHM3_B/H in bidirectional configurations risks asymmetric clamping and potential failure during positive-going transients on the anode side.
Does SM6T6V8AHM3_B/H meet automotive qualification standards?
Yes, the HM3 suffix in SM6T6V8AHM3_B/H denotes halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating the SM6T6V8AHM3_B/H for under-hood and chassis-mounted automotive applications per industry requirements.
What is the maximum clamping voltage of SM6T6V8AHM3_B/H under surge conditions?
The SM6T6V8AHM3_B/H exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to a 57 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across temperature and lifetime, ensuring downstream components such as 5 V logic ICs or CAN transceivers remain within safe operating voltage limits during standardized surge events.
How does the SMB package of SM6T6V8AHM3_B/H impact PCB layout?
The SMB (DO-214AA) package of SM6T6V8AHM3_B/H requires a 0.220" × 0.130" pad layout with 0.086" minimum cathode/anode pad width, enabling high-density routing in space-constrained modules. Its low-profile design and MSL Level 1 rating allow direct placement into standard reflow profiles without baking, simplifying manufacturing for the SM6T6V8AHM3_B/H in automotive and industrial assemblies.
SM6T6V8AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T6V8AHM3_B/H FAQ
1.How can I place an order for SM6T6V8AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8AHM3_B/H 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 SM6T6V8AHM3_B/H reliable?
The price and inventory of SM6T6V8AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T6V8AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8AHM3_B/H?
SM6T6V8AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8AHM3_B/H 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 SM6T6V8AHM3_B/H?
For technical support, including SM6T6V8AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8AHM3_B/H requirements.
6.How does Aetrix verify that SM6T6V8AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T6V8AHM3_B/H 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 SM6T6V8AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T6V8AHM3_B/H?
All SM6T6V8AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8AHM3_B/H, 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 SM6T6V8AHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T6V8AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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