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Vishay General Semiconductor - Diodes Division SM6T6V8CAHM3_B/I
- Part No.:
- SM6T6V8CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHM3_B/I.pdf
- Description:
- 600W,6.8V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,954
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Product details
Overview
SM6T6V8CAHM3_B/I 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), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage at 57 A (10/1000 μs), 600 W peak pulse power rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T6V8CAHM3_B/I datasheet, SM6T6V8CAHM3_B/I pinout, SM6T6V8CAHM3_B/I application, or SM6T6V8CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 600 W surge, SMB footprint compatibility, AEC-Q101 qualification status, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical breakdown and clamping characteristics in forward and reverse directions. Its glass-passivated junction ensures stable leakage performance and robust ESD immunity, while low-inductance SMB packaging supports fast transient response (<1 ns typical turn-on time).
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines reliable conduction onset under surge conditions |
| VWM | 5.80 V - maximum continuous reverse voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - clamping voltage protecting downstream ICs during 600 W transients |
| PPPM | 600 W - peak pulse power handling per standard 10/1000 μs waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and IPC-7351B standards |
| Qualification | AEC-Q101 qualified - validated for automotive electronics reliability per stress test requirements |
| Compliance | Halogen-free, RoHS-compliant (HM3 suffix) - meets EU Directive 2011/65/EU and JEDEC JS709E |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Not applicable - bidirectional device has no polarity marking | No functional cathode/anode distinction; terminals are electrically symmetric |
| Anode (unmarked end) | Not applicable - bidirectional device has no polarity marking | Both terminals behave identically under positive or negative transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events in automotive ECUs |
| Low clamping voltage (10.5 V) | Protects 5 V logic interfaces (e.g., CAN, LIN, sensor analog outputs) with margin below absolute maximum ratings |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, AC/HAST, and mechanical shock per automotive reliability standards |
| MSL Level 1 | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and inductive switching transients in door modules and lighting controls. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to limit transient energy entering the PCB. Use Value: Prevents latch-up or gate oxide damage in 5 V MCU peripherals by clamping surges to ≤10.5 V at 57 A. | Use Scenario: Safeguarding 4–20 mA current-loop transmitter outputs and analog sensor inputs against EFT and surge in factory automation PLCs. IC Role / Device Role / Timing Role: Parallel-connected TVS across signal line and ground to shunt transient current before reaching precision amplifier inputs. Use Value: Maintains signal integrity with <1000 μA leakage at 5.8 V, ensuring minimal offset error in millivolt-level measurements. |
| Automotive Infotainment USB Port | Telecom Power Supply Input |
Use Scenario: Suppressing ESD and coupled noise on USB 2.0 D+/D− lines in head unit applications exposed to human-body-model discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to minimize signal distortion. Use Value: Clamps ±8 kV HBM ESD events within nanoseconds while adding <15 pF capacitance to preserve signal rise/fall times. | Use Scenario: Front-end protection of 12 V DC input rails in VoIP phones and base stations subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converter to prevent catastrophic failure during 10/1000 μs transients. Use Value: Absorbs up to 600 W surge energy without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same VBR (6.45–7.14 V) and VC (10.5 V), but lower PPPM = 400 W and larger SMA package (DO-214AC) | Limited to lower-energy transients; less suitable for automotive load-dump where 600 W is required | Select SM6T6V8CAHM3_B/I when 600 W rating and SMB footprint are mandatory |
| 1.5KE6.8CA | Higher PPPM = 1500 W but axial DO-15 package; VC = 10.5 V same, but slower response due to higher parasitic inductance | Not SMT-compatible; unsuitable for high-density PCBs or automated assembly | Choose SM6T6V8CAHM3_B/I for surface-mount designs requiring AEC-Q101 and compact layout |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM6T6V8CAHM3_B/I uniquely combines 600 W surge capability, SMB footprint, AEC-Q101 qualification, and halogen-free construction-making it optimal for space-constrained, automotive-grade transient protection where reliability and manufacturability are critical.
Availability
SM6T6V8CAHM3_B/I is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment USB ports, and telecom power supply inputs requiring stable component supply and long-term lifecycle support.
Supply support for SM6T6V8CAHM3_B/I 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 robust transient voltage suppression in harsh environments, targeting automotive, industrial, and telecom systems where high-energy surge immunity and AEC-Q101 compliance are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHM3_B/I?
The "CA" suffix in SM6T6V8CAHM3_B/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T6V8A), SM6T6V8CAHM3_B/I has no polarity marking and functions identically regardless of applied voltage polarity-critical for protecting AC-coupled or differential signal paths.
Is SM6T6V8CAHM3_B/I suitable for automotive applications?
Yes, SM6T6V8CAHM3_B/I is AEC-Q101 qualified and manufactured with HM3 suffix (halogen-free, RoHS-compliant), making it approved for automotive use. It meets stringent requirements for temperature cycling, humidity testing, and mechanical shock, and is commonly deployed in body control modules, infotainment systems, and sensor interfaces where reliability under under-hood conditions is essential.
What is the maximum clamping voltage of SM6T6V8CAHM3_B/I under surge conditions?
The maximum clamping voltage (VC) of SM6T6V8CAHM3_B/I is 10.5 V at 57 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value ensures downstream 5 V logic components remain within safe operating limits during transient events, providing a 4.7 V design margin above the 5.8 V stand-off voltage.
How does the HM3 suffix differ from E3 or M3 in SM6T6V8CAHM3_B/I?
The HM3 suffix in SM6T6V8CAHM3_B/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification-distinct from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). HM3 parts undergo additional automotive stress validation and are marked with "HM3" in the ordering code to confirm qualification status for automotive production.
Can SM6T6V8CAHM3_B/I replace SM6T6V8A in an existing design?
No-SM6T6V8CAHM3_B/I is bidirectional while SM6T6V8A is unidirectional, so direct replacement requires circuit review. The unidirectional version uses a cathode band for polarity identification and conducts only in reverse bias; substituting the bidirectional SM6T6V8CAHM3_B/I may cause unintended conduction in DC-biased lines. Layout and system-level polarity assumptions must be verified before interchange.
SM6T6V8CAHM3_B/I 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:
- Telecom
- 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_B/I FAQ
1.How can I place an order for SM6T6V8CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHM3_B/I 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_B/I reliable?
The price and inventory of SM6T6V8CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHM3_B/I?
SM6T6V8CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHM3_B/I 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_B/I?
For technical support, including SM6T6V8CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHM3_B/I requirements.
6.How does Aetrix verify that SM6T6V8CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHM3_B/I 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_B/I meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHM3_B/I?
All SM6T6V8CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHM3_B/I, 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_B/I part is unused and in its original packaging.
Return procedure for SM6T6V8CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CAHM3_B/I Tags
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