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Vishay General Semiconductor - Diodes Division SM6T6V8CA-E3/5B
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- Part No.:
- SM6T6V8CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CA-E3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,365
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Product details
Overview
SM6T6V8CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 6.8 V breakdown voltage (VBR), 10.5 V maximum clamping voltage (VC) at 57 A peak pulse current, 600 W peak pulse power (10/1000 μs), and operates across -65 °C to +150 °C junction temperature range. Used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SM6T6V8CA-E3/5B datasheet, SM6T6V8CA-E3/5B pinout, SM6T6V8CA-E3/5B application, or SM6T6V8CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.54), AEC-Q101 qualification eligibility, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SM6T6V8CA-E3/5B implements a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, supporting robust protection of AC-coupled or differential signal paths.
Rated for 600 W peak pulse power under standardized 10/1000 μs waveform, it delivers stable clamping performance with <100 °C/W junction-to-ambient thermal resistance and meets J-STD-020 MSL Level 1 reflow requirements (260 °C peak). The device exhibits ≤1000 μA reverse leakage at 5.80 V stand-off voltage and maintains specified parameters up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise voltage threshold where clamping initiates in either direction |
| VWM | 5.80 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - ensures downstream ICs see no more than 10.5 V during worst-case surge |
| PPPM | 600 W - supports high-energy transient suppression in automotive load-dump or inductive switching events |
| TJ range | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm height and 3.94 mm length, compatible with standard SMT pick-and-place |
Pinout & Package
SM6T6V8CA-E3/5B uses an SMB (DO-214AA) package with two terminals: Cathode and Anode. As a bidirectional TVS, neither terminal is marked; polarity is functionally symmetric. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode | Transient current sink (unidirectional reference) | Terminal that conducts forward current in unidirectional mode; in bidirectional operation, serves as one side of symmetrical clamping path |
| Anode | Transient current sink (unidirectional reference) | Terminal that conducts reverse current in unidirectional mode; in bidirectional operation, completes symmetrical clamping path with cathode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating sensor outputs without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 4 (4 kV) transients when properly laid out |
| Low clamping voltage (10.5 V) | Provides 3.7 V margin below typical 14 V automotive supply rail, preventing latch-up or damage to 12 V-rated ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements before assembly |
| AEC-Q101 qualification path | Base part number supports automotive-grade variants (e.g., SM6T6V8CAHE3_B/I) meeting stress test requirements for vehicle electronics |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and jump-start transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to limit overvoltage. Use Value: Maintains signal integrity by clamping transients to ≤10.5 V while surviving repeated 600 W pulses per ISO 16750-2. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils or motor drives. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on 24 V DC input channels, shunting energy before optocoupler or MCU GPIO. Use Value: Enables reliable operation in harsh factory environments with >100,000 surge cycles at rated conditions due to glass-passivated junction stability. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Shielding USB 2.0 D+/D- lines in portable devices from ESD events per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, minimizing trace inductance for sub-nanosecond response. Use Value: Limits ESD-induced voltage to <12 V at 30 A peak, preventing gate oxide rupture in USB transceivers without degrading 480 Mbps signal integrity. |
Use Scenario: Protecting Ethernet PHY or DSL line drivers from lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Secondary-level protector after gas discharge tube (GDT), clamping residual transients to safe levels for silicon front-end. Use Value: Delivers 600 W pulse handling with <20 °C/W junction-to-lead thermal resistance, enabling effective heat dissipation during multi-millisecond surges. |
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, but lower 400 W PPPM; VC = 11.5 V at 35 A (10/1000 μs) | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); not suitable for ISO 7637-2 Pulse 5a | Select when cost sensitivity outweighs peak power requirement and layout space allows parallel devices |
| 1.5KE6.8CA | DO-201 package (axial leaded), 600 W rating, VC = 10.5 V at 57 A, but larger footprint and manual assembly required | Not compatible with automated SMT; used in legacy through-hole designs or prototyping | Choose only for retrofit or low-volume hand-soldered assemblies where SMB footprint is unavailable |
Compared with SMAJ6.8CA and 1.5KE6.8CA, the SM6T6V8CA-E3/5B provides identical clamping voltage and superior surge robustness in a compact, MSL Level 1–compliant SMT package-making it optimal for high-reliability automotive and industrial PCBs requiring automated manufacturing and thermal resilience.
Availability
SM6T6V8CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer USB interface protection requiring stable component supply, RoHS compliance, and repeatable surge performance across production batches.
Supply support for SM6T6V8CA-E3/5B 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SM6T Series targets board-level transient protection in space-constrained applications, delivering high-power surge suppression in low-profile SMB packages for automotive, industrial, and computing systems where AEC-Q101 readiness and automated assembly are critical.
FAQ
What is the clamping voltage of SM6T6V8CA-E3/5B under a 10/1000 μs surge?
The SM6T6V8CA-E3/5B has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 57 A using the standardized 10/1000 μs waveform. This value is measured across the device terminals with specified mounting conditions (0.2" × 0.2" copper pads), ensuring predictable overvoltage limiting for protected circuitry.
Is SM6T6V8CA-E3/5B suitable for automotive applications?
Yes, SM6T6V8CA-E3/5B is designed for automotive use: its base part supports AEC-Q101 qualified variants (e.g., SM6T6V8CAHE3_B/I), operates from -65 °C to +150 °C, meets MSL Level 1 reflow standards, and delivers 600 W surge capability required for ISO 7637-2 compliance. The "E3" suffix confirms RoHS-compliant commercial-grade construction.
How does the bidirectional design of SM6T6V8CA-E3/5B affect circuit implementation?
The bidirectional configuration of SM6T6V8CA-E3/5B eliminates polarity marking and enables direct placement across any two-node interface-such as differential data lines (RS-485, CAN) or AC-coupled sensors-without orientation constraints. This simplifies layout, reduces BOM count, and avoids failure modes caused by incorrect installation during SMT assembly.
What is the standoff voltage (VWM) of SM6T6V8CA-E3/5B, and why does it matter?
The SM6T6V8CA-E3/5B has a maximum working peak reverse voltage (VWM) of 5.80 V. This parameter defines the highest continuous voltage the device blocks without significant leakage (<1000 μA), ensuring minimal power loss and signal distortion during normal operation-critical for protecting low-voltage logic interfaces like USB or I²C.
Does SM6T6V8CA-E3/5B require heatsinking in typical applications?
No additional heatsink is required for SM6T6V8CA-E3/5B under transient conditions, as its 600 W rating assumes proper PCB copper pad layout (0.2" × 0.2" per terminal). Its RθJA of 100 °C/W and RθJL of 20 °C/W enable sufficient heat dissipation during short-duration surges; continuous power dissipation is limited to 5.0 W at 50 °C ambient.
SM6T6V8CA-E3/5B 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T6V8CA-E3/5B FAQ
1.How can I place an order for SM6T6V8CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CA-E3/5B 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 SM6T6V8CA-E3/5B reliable?
The price and inventory of SM6T6V8CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SM6T6V8CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CA-E3/5B?
SM6T6V8CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CA-E3/5B 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 SM6T6V8CA-E3/5B?
For technical support, including SM6T6V8CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CA-E3/5B requirements.
6.How does Aetrix verify that SM6T6V8CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CA-E3/5B 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 SM6T6V8CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SM6T6V8CA-E3/5B?
All SM6T6V8CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CA-E3/5B, 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 SM6T6V8CA-E3/5B part is unused and in its original packaging.
Return procedure for SM6T6V8CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CA-E3/5B Tags
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