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Vishay General Semiconductor - Diodes Division SM6T6V8CAHM3_A/H
- Part No.:
- SM6T6V8CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHM3_A/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
SM6T6V8CAHM3_A/H 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 AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T6V8CAHM3_A/H datasheet, SM6T6V8CAHM3_A/H pinout, SM6T6V8CAHM3_A/H application, or SM6T6V8CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.54), halogen-free RoHS compliance, MSL Level 1 rating, and suitability for automotive sensor line protection where space-constrained SMB footprint and high-reliability transient immunity are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR (6.45–7.14 V), VWM (5.80 V), and ID (1000 μA max) in either direction. Its low-inductance SMB package enables fast response to sub-microsecond transients while maintaining stable clamping under repetitive surges.
The device uses a glass-passivated silicon junction and is rated for TJ = –65 °C to +150 °C operation. Thermal resistance RθJA is 100 °C/W (typ.) on standard 0.2" × 0.2" copper pads, supporting reliable power dissipation up to 5.0 W continuous at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - Ensures consistent breakdown initiation across production lots and temperature range |
| VWM | 5.80 V - Maximum continuous reverse operating voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V @ 57 A - Clamps 10/1000 μs surges to safe levels for downstream 5 V logic or analog circuitry |
| PPPM | 600 W - Withstands high-energy transients from inductive switching or ESD without failure |
| TJ Range | –65 °C to +150 °C - Supports under-hood automotive environments and industrial thermal cycling |
| Qualification | AEC-Q101 qualified - Validated for automotive reliability including HTOL, TC, and HTRB testing |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated placement and reflow soldering |
Pinout & Package
SM6T6V8CAHM3_A/H is a two-terminal bidirectional TVS diode in SMB (DO-214AA) package. No polarity marking is present on bidirectional variants; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals conduct identically during positive or negative overvoltage events; no DC bias dependency |
| Case (SMB body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and contributes to thermal dissipation via PCB copper pads |
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 | Handles ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges on automotive data buses |
| Halogen-free & RoHS-compliant | Meets automotive OEM material restrictions and supports lead-free reflow profiles up to 260 °C peak |
| MSL Level 1 rating | Allows unlimited floor life and standard SMT assembly without dry-pack or baking requirements |
| Low clamping voltage (10.5 V) | Protects 5 V logic interfaces (e.g., CAN, LIN, sensor analog outputs) without overstressing input structures |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤10.5 V, preventing latch-up or gate oxide damage in 5 V-tolerant ADC front-ends. | Use Scenario: Safeguarding RS-485 transceiver I/O pins in factory automation PLCs subject to long cable ESD and ground loop surges. IC Role / Device Role / Timing Role: Line-side TVS connected across differential pair (A/B) and to ground. Use Value: Maintains signal integrity by clamping common-mode transients before they couple into receiver inputs, preserving >1 Mbps data rate. |
| Consumer USB Port ESD | Automotive LIN Bus Node |
Use Scenario: ESD protection for USB 2.0 D+/D– lines in portable medical devices and smart home hubs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at USB connector, before ESD-rated transceiver. Use Value: Absorbs ±15 kV contact discharge per IEC 61000-4-2 without degrading signal rise/fall times due to low junction capacitance. | Use Scenario: Transient suppression on LIN bus nodes in door modules and seat controllers subjected to battery disconnect spikes. IC Role / Device Role / Timing Role: Clamp connected between LIN line and chassis ground, referenced to local node supply. Use Value: Prevents false wake-up or communication dropout by limiting LIN line voltage to <12 V during 100 V/50 ms load dump events. |
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 PPPM (400 W); VC = 11.5 V @ 34.8 A | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5KE6.8CA | Higher PPPM (1500 W) but DO-201 package (larger footprint); VC = 12.6 V @ 119 A | Requires PCB redesign for axial leaded through-hole mounting; unsuitable for dense SMT layouts | Choose only if system-level surge test requirements exceed 600 W and board space permits larger case |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM6T6V8CAHM3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W surge handling, and compact SMB footprint-making it the preferred choice for space-constrained automotive and industrial SMT designs requiring validated reliability.
Availability
SM6T6V8CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and consumer USB port protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SM6T6V8CAHM3_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 application-specific performance.
The SM6T Series is engineered for robust transient suppression in automotive, industrial, and consumer systems-delivering high-power clamping in low-profile surface-mount packages with stringent qualification for harsh environments.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHM3_A/H?
The "CA" suffix in SM6T6V8CAHM3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. Unlike unidirectional variants (e.g., SM6T6V8A), SM6T6V8CAHM3_A/H has no cathode band marking and functions identically regardless of voltage polarity applied across its terminals-critical for protecting AC-coupled or floating signal paths.
Is SM6T6V8CAHM3_A/H suitable for automotive applications?
Yes, SM6T6V8CAHM3_A/H is AEC-Q101 qualified and manufactured with HM3 suffix indicating halogen-free, RoHS-compliant construction and automotive-grade reliability testing. It is explicitly intended for automotive use cases such as sensor line protection, LIN/CAN bus clamping, and body electronics-meeting requirements for temperature cycling, humidity resistance, and long-term surge endurance under hood conditions.
What is the maximum clamping voltage of SM6T6V8CAHM3_A/H and how is it measured?
The maximum clamping voltage (VC) of SM6T6V8CAHM3_A/H is 10.5 V, measured at 57 A peak pulse current using a standardized 10/1000 μs double-exponential waveform. This value reflects the actual voltage seen by protected circuitry during worst-case surge events and is guaranteed across the full operating temperature range, enabling precise margining for 5 V logic and analog interfaces.
How does the SMB (DO-214AA) package of SM6T6V8CAHM3_A/H impact PCB layout?
The SMB (DO-214AA) package of SM6T6V8CAHM3_A/H requires minimal PCB area (approx. 3.94 mm × 2.20 mm) and supports standard reflow profiles with MSL Level 1 rating-eliminating bake requirements. Layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal performance and 600 W pulse power handling, as defined in the Vishay SM6T datasheet.
Does SM6T6V8CAHM3_A/H have a specified junction capacitance?
No junction capacitance value is specified for SM6T6V8CAHM3_A/H in the official Vishay SM6T datasheet (Document Number: 88385, Rev. 09-Jan-2024). While typical TVS diodes in this family exhibit low capacitance (<100 pF), design-critical high-speed applications (e.g., USB 2.0, HDMI) should verify signal integrity empirically or consult Vishay's application notes for capacitance curves of related SM6T variants.
SM6T6V8CAHM3_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 (SMB)
SM6T6V8CAHM3_A/H FAQ
1.How can I place an order for SM6T6V8CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHM3_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 SM6T6V8CAHM3_A/H reliable?
The price and inventory of SM6T6V8CAHM3_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 SM6T6V8CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHM3_A/H?
SM6T6V8CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHM3_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 SM6T6V8CAHM3_A/H?
For technical support, including SM6T6V8CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHM3_A/H requirements.
6.How does Aetrix verify that SM6T6V8CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHM3_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 SM6T6V8CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHM3_A/H?
All SM6T6V8CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHM3_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 SM6T6V8CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T6V8CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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