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Vishay General Semiconductor - Diodes Division SM6T6V8CAHM3/H
- Part No.:
- SM6T6V8CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHM3/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,858
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Product details
Overview
SM6T6V8CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 6.8 V breakdown voltage (VBR), and 5.8 V stand-off voltage (VWM). It clamps transients to ≤10.5 V at 57 A, features glass passivated junction, AEC-Q101 qualification, and halogen-free RoHS compliance - deployed for ESD and surge protection on automotive sensor signal lines.
For engineers reviewing the SM6T6V8CAHM3/H datasheet, SM6T6V8CAHM3/H pinout, SM6T6V8CAHM3/H application, or SM6T6V8CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, low-inductance SMB package, and compatibility with automated SMT placement in safety-critical automotive ECUs.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown tested at 10 mA per IEC 61000-4-5 surge standards. Its clamping behavior is defined by a 10/1000 μs waveform, delivering 10.5 V clamping voltage at 57 A peak pulse current - enabling robust protection of 5 V logic interfaces without forward conduction.
The device uses a planar passivated silicon junction housed in an SMB case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting operation from –65 °C to +150 °C with no polarity marking required for bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - ensures reliable turn-on before downstream IC damage threshold |
| VWM | 5.80 V - maximum continuous reverse voltage without significant leakage (<1000 μA) |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - defines worst-case voltage seen by protected circuit during surge |
| PPPM | 600 W - peak transient energy handling capacity under standardized surge waveform |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with IPC-7351B standard pad layout |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, and HAST testing |
Pinout & Package
Package: SMB (DO-214AA), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002; bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts surge current into device during positive voltage excursion relative to cathode |
| Cathode | Transient current entry (negative half-cycle) | Conducts surge current into device during negative voltage excursion relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without failure |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E material requirements |
| Low clamping voltage (10.5 V) | Protects 5 V logic rails while maintaining margin below absolute maximum ratings of typical MCUs |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before reaching signal conditioning amplifier or ADC input. Use Value: Prevents latch-up or permanent damage to precision op-amps and SAR ADCs by limiting voltage excursions to ≤10.5 V during 57 A surges. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines in vehicle gateway ECUs against ESD events and ISO 7637-2 pulse 1/2/5a transients. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to ground, providing common-mode surge suppression without disrupting DC bias or signal integrity. Use Value: Maintains CAN bit timing accuracy by avoiding parasitic capacitance-induced rise/fall time degradation - typical CJ < 100 pF at 0 V. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding USB 2.0 D+/D− data lines in automotive infotainment head units from human-body-model (HBM) ESD up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS mounted adjacent to USB connector, grounded via shortest possible path to chassis. Use Value: Clamps ESD strikes within nanoseconds while adding < 0.5 dB insertion loss at 480 MHz - preserving USB 2.0 eye diagram integrity. | Use Scenario: Front-end protection of ADSL/VDSL line drivers in residential gateways subjected to lightning-induced longitudinal surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Series-connected bidirectional TVS across tip/ring, coordinated with gas discharge tube (GDT) for staged overvoltage defense. Use Value: Absorbs 600 W transient energy without thermal runaway, enabling GDT to handle follow-on current while TVS limits peak voltage to safe levels for line driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same SMB package, 600 W rating, but VBR = 7.14–7.88 V (wider tolerance), no AEC-Q101 qualification | Targeted at commercial/industrial systems where automotive qualification is not required | Select SMAJ6.8CA only if AEC-Q101 is unnecessary and wider VBR tolerance is acceptable for system margin |
| SMCJ6.8CA | Higher 1500 W rating in larger SMC (DO-214AB) package; VBR = 7.14–7.88 V; AEC-Q101 available in HM3 variant | Used where higher surge energy (e.g., ISO 7637-2 Pulse 5b) must be absorbed without PCB area increase | Choose SMCJ6.8CA when system-level surge tests exceed 600 W capability and board space allows SMC footprint |
Compared with SMAJ6.8CA and SMCJ6.8CA, SM6T6V8CAHM3/H delivers tighter VBR tolerance (6.45–7.14 V), guaranteed AEC-Q101 qualification, and halogen-free compliance - making it the preferred choice for automotive signal-line protection where precision clamping and supply-chain traceability are mandatory.
Availability
SM6T6V8CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB ports, and telecom DSL line protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SM6T6V8CAHM3/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 TVS devices with emphasis on high-reliability, automotive-grade, and industry-standard packaging.
The SM6T series was engineered specifically for cost-sensitive, high-volume automotive and industrial transient suppression - balancing 600 W surge capability, SMB footprint, AEC-Q101 compliance, and halogen-free materials in a single platform.
FAQ
What is the clamping voltage of SM6T6V8CAHM3/H at its rated peak pulse current?
The SM6T6V8CAHM3/H clamps to a maximum of 10.5 V at its specified peak pulse current of 57 A under the 10/1000 μs waveform condition. This value is measured per Figure 1 in the official Vishay datasheet (Doc. #88385) and represents the worst-case voltage imposed on protected circuitry during surge events. The SM6T6V8CAHM3/H maintains this clamping performance across its full operating temperature range of –65 °C to +150 °C.
Is SM6T6V8CAHM3/H suitable for protecting 3.3 V logic circuits?
No - the SM6T6V8CAHM3/H is not recommended for direct protection of 3.3 V logic circuits because its 5.8 V stand-off voltage (VWM) exceeds the 3.3 V rail, risking excessive reverse leakage current and potential interference. For 3.3 V systems, lower-voltage TVS devices such as SM6T3.3CA or SMAJ3.3CA with VWM ≤ 3.3 V should be selected. The SM6T6V8CAHM3/H is optimized for 5 V interfaces where its 5.8 V VWM provides adequate margin.
Does SM6T6V8CAHM3/H have polarity markings on the package?
No, the SM6T6V8CAHM3/H does not feature polarity markings on its SMB (DO-214AA) case because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SM6T6V8A), which use a cathode band to indicate polarity, bidirectional types like SM6T6V8CAHM3/H are symmetrical and function identically regardless of orientation. This simplifies PCB layout and eliminates risk of incorrect placement during automated assembly.
What is the moisture sensitivity level (MSL) rating for SM6T6V8CAHM3/H?
The SM6T6V8CAHM3/H meets MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This means the device can be stored indefinitely at ambient conditions without dry-pack requirements and withstands standard lead-free reflow profiles without popcorn cracking or delamination. The MSL Level 1 rating is confirmed in the "Features" section of the Vishay SM6T datasheet (Rev. 09-Jan-2024).
How does the AEC-Q101 qualification of SM6T6V8CAHM3/H differ from standard commercial-grade TVS diodes?
The AEC-Q101 qualification of SM6T6V8CAHM3/H requires rigorous stress testing beyond commercial-grade specifications - including 1000-hour high-temperature operating life (HTOL) at 150 °C, 1000 cycles of temperature cycling (–40 °C to +125 °C), and unbiased highly accelerated stress test (uHAST). These tests validate reliability for automotive under-hood applications, whereas standard commercial TVS diodes like SMAJ6.8CA lack this validation. The SM6T6V8CAHM3/H carries the HM3 suffix explicitly denoting halogen-free, RoHS-compliant, and AEC-Q101 qualified status.
SM6T6V8CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T6V8CAHM3/H FAQ
1.How can I place an order for SM6T6V8CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHM3/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 SM6T6V8CAHM3/H reliable?
The price and inventory of SM6T6V8CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CAHM3/H is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHM3/H?
SM6T6V8CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHM3/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 SM6T6V8CAHM3/H?
For technical support, including SM6T6V8CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHM3/H requirements.
6.How does Aetrix verify that SM6T6V8CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHM3/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 SM6T6V8CAHM3/H meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHM3/H?
All SM6T6V8CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHM3/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 SM6T6V8CAHM3/H part is unused and in its original packaging.
Return procedure for SM6T6V8CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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