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Vishay General Semiconductor - Diodes Division SM6T6V8CAHE3/5B
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- Part No.:
- SM6T6V8CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHE3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,462
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Product details
Overview
SM6T6V8CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 6.8 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), 10.5 V maximum clamping voltage at 57 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T6V8CAHE3/5B datasheet, SM6T6V8CAHE3/5B pinout, SM6T6V8CAHE3/5B application, or SM6T6V8CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under surge, RoHS-compliant and halogen-free construction, and compatibility with automated SMT placement on PCBs requiring robust ESD and surge protection.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix designation, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 μA at 5.80 V stand-off).
The device delivers 600 W peak pulse power per 10/1000 μs waveform when mounted on 5.0 mm × 5.0 mm copper pads, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise clamping onset threshold for bidirectional surge suppression |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capacity without failure under standardized surge waveform |
| TJ max. | +150 °C - enables deployment in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - confirms reliability for automotive electronics per stress-test requirements (HTOL, TC, HTRB, etc.) |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm height and 5.59 mm length, compatible with standard reflow profiles |
Pinout & Package
SM6T6V8CAHE3/5B uses an SMB (DO-214AA) package with two terminals and no polarity marking - consistent with bidirectional functionality. The case is molded with UL 94 V-0 rated compound, and terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional conduction path | No designated anode or cathode; either terminal serves as input/output for transient clamping in AC or floating systems |
| Case (cathode band absent) | Non-polarized junction housing | Eliminates orientation dependency during placement - reduces assembly errors and supports automated pick-and-place |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in typical PCB layouts |
| Glass passivated chip junction | Ensures stable VBR tolerance (±5%) and low long-term drift under thermal cycling and humidity stress |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers or sensor front-ends |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ADC or signal conditioner. Use Value: Clamps 57 A surge to ≤10.5 V, preserving sensor accuracy and preventing latch-up in microcontroller analog inputs. | Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subjected to ground loop surges and EFT bursts. IC Role / Device Role / Timing Role: Low-inductance TVS across differential bus lines (A/B) to suppress common-mode transients while maintaining signal integrity. Use Value: Symmetric clamping prevents polarity-dependent failure and maintains <1 ns response time, critical for 10 Mbps data rates. |
| Consumer USB-C Port ESD | Telecom DSL Line Protection |
Use Scenario: Secondary-level ESD protection on USB-C CC and VCONN pins in portable devices where primary protection resides upstream. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp absorbing ±15 kV contact discharge per IEC 61000-4-2 without forward conduction. Use Value: Sub-100 ps response and 10.5 V clamping prevent gate oxide damage in USB PD controllers and multiplexers. | Use Scenario: Overvoltage protection on twisted-pair DSL lines entering residential gateways, exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter placed before line driver/receiver ICs, coordinated with gas discharge tube (GDT) for staged protection. Use Value: 600 W rating handles 10/1000 μs surges up to 1.2 kV, extending GDT lifetime and reducing maintenance frequency. |
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 = 11.2 V @ 35.7 A | Limited to lower-energy transients (IEC 61000-4-5 Level 3); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| SMCJ6.8CA | Higher 1500 W PPPM in larger SMC (DO-214AB) package; VC = 11.4 V @ 131 A | Requires larger PCB area; better suited for mains-connected equipment than space-constrained automotive modules | Choose when system-level surge testing exceeds 600 W or when board layout allows SMC footprint |
Compared with SMAJ6.8CA and SMCJ6.8CA, SM6T6V8CAHE3/5B uniquely balances AEC-Q101 compliance, SMB footprint, and 600 W surge handling-making it optimal for automotive and industrial edge nodes where qualification, size, and performance intersect.
Availability
SM6T6V8CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, and consumer USB-C protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SM6T6V8CAHE3/5B 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, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and qualification-grade validation are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration, meaning SM6T6V8CAHE3/5B provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses like RS-485 or CAN FD, and floating sensor outputs. Unlike unidirectional variants (e.g., SM6T6V8A), it has no cathode band marking and functions identically regardless of terminal orientation.
Is SM6T6V8CAHE3/5B suitable for automotive applications?
Yes - SM6T6V8CAHE3/5B carries the HE3 suffix, confirming AEC-Q101 qualification. This includes validation across temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing, making SM6T6V8CAHE3/5B appropriate for under-hood ECUs, ADAS camera modules, and body control units where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of SM6T6V8CAHE3/5B during a surge event?
The maximum clamping voltage (VC) of SM6T6V8CAHE3/5B is 10.5 V when subjected to its rated peak pulse current of 57 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and represents the highest voltage imposed on the protected circuit during worst-case transient conditions.
How does the SMB (DO-214AA) package of SM6T6V8CAHE3/5B compare to SMA or SMC packages?
SM6T6V8CAHE3/5B's SMB package offers a 25 % smaller footprint than SMC and 30 % smaller than SMA while maintaining 600 W surge capability. Its 2.20 mm height enables low-profile designs, and its MSL Level 1 rating eliminates pre-bake requirements - unlike some SMA variants - making SM6T6V8CAHE3/5B ideal for compact, high-volume SMT assemblies.
Does SM6T6V8CAHE3/5B require external series impedance for effective protection?
No - SM6T6V8CAHE3/5B is designed for direct placement across protected lines and does not require series impedance to function. However, for optimal energy sharing in multi-stage protection (e.g., with a GDT or polymer PTC), a small series resistor or ferrite bead may be added to coordinate let-through energy, especially in telecom or AC mains applications where SM6T6V8CAHE3/5B serves as secondary clamping.
SM6T6V8CAHE3/5B 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:
- 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 (SMBJ)
SM6T6V8CAHE3/5B FAQ
1.How can I place an order for SM6T6V8CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHE3/5B 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 SM6T6V8CAHE3/5B reliable?
The price and inventory of SM6T6V8CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHE3/5B?
SM6T6V8CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHE3/5B 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 SM6T6V8CAHE3/5B?
For technical support, including SM6T6V8CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHE3/5B requirements.
6.How does Aetrix verify that SM6T6V8CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHE3/5B 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 SM6T6V8CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHE3/5B?
All SM6T6V8CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHE3/5B, 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 SM6T6V8CAHE3/5B part is unused and in its original packaging.
Return procedure for SM6T6V8CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CAHE3/5B Tags
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