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Vishay General Semiconductor - Diodes Division SM6T6V8CAHE3_A/H
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- Part No.:
- SM6T6V8CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHE3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,414
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Product details
Overview
SM6T6V8CAHE3_A/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 10.5 V clamping voltage (VC) at 57 A peak pulse current. It provides robust ESD and surge protection for automotive sensor signal lines and low-voltage IC interfaces.
For engineers reviewing the SM6T6V8CAHE3_A/H datasheet, SM6T6V8CAHE3_A/H pinout, SM6T6V8CAHE3_A/H application, or SM6T6V8CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 5.8 V stand-off voltage, low clamping ratio (VC/VBR ≈ 1.54), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
The SM6T6V8CAHE3_A/H operates as a bidirectional voltage-clamping device, leveraging a glass-passivated silicon junction to suppress transients in both polarities without polarity marking. Its design targets fast response to sub-microsecond surges while maintaining low dynamic impedance under 10/1000 μs waveform stress.
It features a maximum junction temperature of +150 °C, thermal resistance of 100 °C/W (junction-to-ambient), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The device is AEC-Q101 qualified and RoHS-compliant, with matte tin-plated leads solderable per J-STD-002.
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 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 power handling capacity under standardized 10/1000 μs waveform |
| IFSM | Not applicable - bidirectional device has no forward surge rating; only unidirectional variants specify 100 A |
| TJ max. | +150 °C - maximum allowable junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance limiting power dissipation to 5.0 W at TA = 50 °C on standard PCB layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads. No polarity marking - bidirectional operation confirmed by "CA" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One terminal of bidirectional PN junction | Electrically symmetric with cathode; interchangeable in layout - no directional mounting required |
| Cathode | Other terminal of bidirectional PN junction | Same electrical behavior as anode; terminals function identically for transient suppression in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges on 12 V systems |
| Low clamping voltage (10.5 V) | Protects 5 V and 3.3 V logic interfaces when placed downstream of LDOs or DC-DC converters |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without preconditioning - compatible with standard SMT lines |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output pins of pressure, temperature, and position sensors in engine bay modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤10.5 V, preventing latch-up or damage to 5 V-tolerant SAR ADC inputs while maintaining signal integrity below 5.8 V stand-off. | Use Scenario: Guarding CAN_H/CAN_L differential pair against ESD and coupled transients in factory automation gateways. IC Role / Device Role / Timing Role: Dual SM6T6V8CAHE3_A/H devices (one per line) referenced to common ground, providing symmetrical clamping. Use Value: Clamps common-mode surges to <11 V without distorting the 2.5 V nominal differential swing, preserving CAN FD bit timing integrity up to 5 Mbps. |
| Consumer USB Port ESD Protection | Power Supply Input Stage Clamp |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable medical monitors against contact ESD per IEC 61000-4-2 ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at USB connector, before series resistors or PHY. Use Value: Sub-100 pF junction capacitance minimizes signal rise-time degradation; 10.5 V clamping prevents PHY overvoltage beyond absolute maximum ratings. | Use Scenario: Secondary-side transient suppression on 5 V rail feeding FPGA I/O banks after DC-DC conversion. IC Role / Device Role / Timing Role: Parallel-mounted TVS across VCC-GND to shunt coupling spikes from adjacent motor drivers or relays. Use Value: 600 W rating absorbs repetitive 50–100 ns spikes from nearby switching nodes; 5.8 V VWM ensures no leakage loading on regulated 5 V supply. |
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), VC = 11.5 V at 52 A | Higher clamping voltage reduces margin for 5 V logic; not AEC-Q101 qualified | Select when AEC-Q101 is not required and higher VC is acceptable for less sensitive loads |
| 1.5KE6.8CA | Through-hole DO-201 package, same VBR/VC, but 1500 W rating and larger footprint | Not suitable for high-density SMT designs; incompatible with automated placement | Choose only for legacy through-hole boards or where higher energy absorption justifies board space penalty |
Compared with SMAJ6.8CA and 1.5KE6.8CA, the SM6T6V8CAHE3_A/H delivers tighter VBR tolerance (±5%), lower VC, AEC-Q101 qualification, and optimized SMT manufacturability - making it the preferred choice for new automotive and compact industrial designs requiring validated reliability and precise clamping.
Availability
SM6T6V8CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN gateways, consumer USB interface protection, and power supply input stage clamping requiring stable component supply and full traceability.
Supply support for SM6T6V8CAHE3_A/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 automotive-grade qualification.
The SM6T Series is designed specifically for surface-mount transient voltage suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping, and automated assembly are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHE3_A/H?
The "CA" suffix in SM6T6V8CAHE3_A/H denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities, with no cathode band marking required. This distinguishes it from unidirectional variants (e.g., SM6T6V8A) that feature polarity-specific cathode marking and forward conduction capability. The SM6T6V8CAHE3_A/H is intended for AC-coupled or floating signal paths where polarity reversal may occur.
Is SM6T6V8CAHE3_A/H qualified for automotive use?
Yes, SM6T6V8CAHE3_A/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's SM6T datasheet (Rev. 09-Jan-2024, Doc. #88385). This qualification validates its reliability for automotive applications including under-hood sensor interfaces, body control modules, and infotainment systems, covering temperature cycling, humidity testing, and mechanical shock requirements per the AEC standard.
What is the maximum clamping voltage of SM6T6V8CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of SM6T6V8CAHE3_A/H is 10.5 V at 57 A peak pulse current, measured using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage the protected circuit will experience during a worst-case transient event, ensuring compatibility with 5 V logic families and providing ≥1.3 V margin below typical 12 V system fault thresholds.
Does SM6T6V8CAHE3_A/H require a heatsink for normal operation?
No, SM6T6V8CAHE3_A/H does not require an external heatsink under typical surge conditions. Its 600 W peak pulse rating is defined for transient events lasting milliseconds, not continuous dissipation. For steady-state conditions, its 5.0 W power dissipation limit applies only at TA = 50 °C on recommended 0.2" × 0.2" copper pads - sufficient for leakage current handling without additional thermal management.
How does the VWM of 5.80 V affect circuit design with SM6T6V8CAHE3_A/H?
The 5.80 V stand-off voltage (VWM) of SM6T6V8CAHE3_A/H ensures minimal reverse leakage (<1000 μA) during normal operation at up to 5.8 V DC bias - making it ideal for protecting 5 V rails and interfaces. Designers must ensure system operating voltage remains ≤5.8 V to avoid excessive leakage; exceeding this value risks thermal runaway or premature clamping, especially at elevated temperatures.
SM6T6V8CAHE3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SM6T6V8CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHE3_A/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 SM6T6V8CAHE3_A/H reliable?
The price and inventory of SM6T6V8CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHE3_A/H?
SM6T6V8CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHE3_A/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 SM6T6V8CAHE3_A/H?
For technical support, including SM6T6V8CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T6V8CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHE3_A/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 SM6T6V8CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHE3_A/H?
All SM6T6V8CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHE3_A/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 SM6T6V8CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T6V8CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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