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Vishay General Semiconductor - Diodes Division SM6T6V8CAHE3_B/I
- Part No.:
- SM6T6V8CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHE3_B/I.pdf
- Description:
- 600W,6.8V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,892
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Product details
Overview
SM6T6V8CAHE3_B/I 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 (min), 5.8 V stand-off voltage, and 10.5 V clamping voltage at 57 A. It protects signal lines and ICs in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T6V8CAHE3_B/I datasheet, SM6T6V8CAHE3_B/I pinout, SM6T6V8CAHE3_B/I application, or SM6T6V8CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (10.5 V / 6.8 V ≈ 1.54), RoHS-compliant matte tin terminals, and SMB thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS operates symmetrically in both directions due to its CA suffix designation, with identical VBR (6.45–7.14 V), VWM (5.80 V), and ID (1000 μA max) specifications for reverse and forward polarity. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress.
Designed for surface-mount automated placement, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD 201 Class 2 whisker resistance. The SMB package provides low inductance and supports 100 A non-repetitive forward surge current only in unidirectional variants - not applicable here due to bidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - Ensures reliable conduction onset above 5.8 V operating voltage while avoiding false triggering |
| VWM | 5.80 V - Maximum continuous reverse voltage before leakage exceeds 1000 μA; defines safe operating margin |
| VC @ IPPM | 10.5 V @ 57 A - Clamps transient energy to protect downstream 5 V or 3.3 V logic interfaces |
| PPPM | 600 W - Sustains high-energy surges per ISO 7637-2 Pulse 1/2a/5a without degradation |
| TJ range | −65 °C to +150 °C - Supports operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), 0.220" × 0.155" mounting pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Identical electrical behavior in either direction; no cathode band marking required |
| Case (body) | Thermal and mechanical interface | Non-conductive molding compound (UL 94 V-0); no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN, LIN, RS-485) |
| 600 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (500 V/2 Ω) without failure on properly designed PCB layouts |
| AEC-Q101 qualification | Validates robustness for automotive ECU, ADAS sensor, and body control module deployments |
| Low clamping voltage (10.5 V) | Provides 4.7 V headroom for 5.8 V rail systems, reducing risk of overvoltage damage to protected ICs |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient energy before it reaches ADC input or op-amp buffer stages. Use Value: Prevents sensor signal corruption and microcontroller reset events during 100 V/500 ns transients per ISO 16750-2. | Use Scenario: Shielding 24 V PLC digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Fast-response shunt device limiting line voltage to ≤10.5 V during 1 kV/500 A surge events. Use Value: Eliminates need for external series impedance or RC filtering, preserving signal edge integrity up to 100 kHz. |
| Consumer USB Port ESD | Telecom Line Interface |
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines behind primary ESD arrays in set-top boxes and smart displays. IC Role / Device Role / Timing Role: High-power backup clamp absorbing residual energy after initial ESD diode conduction. Use Value: Handles multi-pulse surge stress (IEC 61000-4-5 Level 3) without parametric shift or thermal runaway. | Use Scenario: Protecting RS-485 transceiver pins in outdoor base station backhaul equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Symmetrical voltage limiter maintaining common-mode and differential-mode surge immunity. Use Value: Maintains <1.5% signal distortion at 10 Mbps due to low dynamic capacitance (<100 pF at 0 V) and sub-1 ns response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Same SMB package, 600 W rating, but VBR min = 6.45 V (identical), VC = 11.2 V @ 53 A - 6.7% higher clamping voltage | Marginally lower surge current handling (53 A vs. 57 A); suitable where board layout limits thermal dissipation | Select when legacy design uses SMBJ footprint and tighter VC tolerance is not required |
| 1.5KE6.8CA | Through-hole DO-201 package, same 6.8 V VBR, but PPPM = 1500 W and VC = 10.5 V - higher power but incompatible mounting | Used in high-surge industrial power supplies where manual assembly or wave soldering is preferred | Choose only for through-hole designs requiring >600 W capability; not drop-in compatible |
Compared with SMBJ6.8CA and 1.5KE6.8CA, SM6T6V8CAHE3_B/I offers optimal balance of AEC-Q101 qualification, SMB space efficiency, and lowest clamping voltage among 6.8 V bidirectional TVS diodes in its power class - critical for protecting modern low-voltage automotive MCUs.
Availability
SM6T6V8CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer USB host ports, and telecom RS-485 interfaces requiring stable component supply across long production lifecycles.
Supply support for SM6T6V8CAHE3_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 and automotive-grade qualification.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments, targeting AEC-Q101-compliant automotive electronics and industrial control systems where consistent clamping performance under thermal stress is mandatory.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHE3_B/I?
The "CA" suffix in SM6T6V8CAHE3_B/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T6V8A), SM6T6V8CAHE3_B/I has no cathode marking and exhibits identical breakdown (6.45–7.14 V) and clamping characteristics regardless of voltage polarity applied across its terminals.
Is SM6T6V8CAHE3_B/I qualified for automotive use?
Yes, SM6T6V8CAHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" suffix) and documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing - validating its suitability for engine control units, ADAS sensors, and body electronics in passenger vehicles and commercial vehicles.
What is the maximum clamping voltage of SM6T6V8CAHE3_B/I and at what current?
The maximum clamping voltage of SM6T6V8CAHE3_B/I is 10.5 V, measured at peak pulse current (IPPM) of 57 A using a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range (−65 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during surge events.
How does the SMB package of SM6T6V8CAHE3_B/I affect thermal performance?
The SMB (DO-214AA) package of SM6T6V8CAHE3_B/I delivers RθJA = 100 °C/W under standard JEDEC test conditions (0.2" × 0.2" copper pads). This thermal resistance enables reliable operation at 5.0 W steady-state power dissipation up to +50 °C ambient, provided PCB layout follows Vishay's recommended pad dimensions (5.0 mm × 5.0 mm per terminal) to avoid derating.
Can SM6T6V8CAHE3_B/I replace unidirectional TVS diodes like SM6T6V8A in existing designs?
No, SM6T6V8CAHE3_B/I cannot directly replace unidirectional SM6T6V8A because it lacks polarity marking and conducts identically in both directions. Substituting it into a unidirectional circuit may cause unintended forward conduction or fail to meet system-level polarity requirements - especially in DC-biased signal paths. Always verify schematic polarity and clamping symmetry before replacement.
SM6T6V8CAHE3_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)
SM6T6V8CAHE3_B/I FAQ
1.How can I place an order for SM6T6V8CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHE3_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 SM6T6V8CAHE3_B/I reliable?
The price and inventory of SM6T6V8CAHE3_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 SM6T6V8CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHE3_B/I?
SM6T6V8CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHE3_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 SM6T6V8CAHE3_B/I?
For technical support, including SM6T6V8CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHE3_B/I requirements.
6.How does Aetrix verify that SM6T6V8CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHE3_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 SM6T6V8CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHE3_B/I?
All SM6T6V8CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHE3_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 SM6T6V8CAHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T6V8CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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