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Vishay General Semiconductor - Diodes Division SM6T6V8CAHM3_A/I
- Part No.:
- SM6T6V8CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CAHM3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,974
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Product details
Overview
SM6T6V8CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 6.8 V breakdown voltage (VBR), 10.5 V clamping voltage (VC) at 57 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects signal lines and ICs in automotive sensor units against ESD and inductive switching transients.
For engineers reviewing the SM6T6V8CAHM3_A/I datasheet, SM6T6V8CAHM3_A/I pinout, SM6T6V8CAHM3_A/I application, or SM6T6V8CAHM3_A/I equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (VC/VBR ≈ 1.54), and SMB package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance across reverse and forward directions. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress, and its low-inductance SMB package minimizes voltage overshoot during fast transients.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 (260 °C peak reflow), supporting high-reliability automotive PCB assembly. Thermal resistance RθJA is 100 °C/W on standard 5.0 mm × 5.0 mm copper pads, enabling predictable derating above 25 °C ambient.
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 |
| VWM | 5.80 V - maximum continuous reverse stand-off voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - limits transient voltage seen by protected circuitry |
| PPPM | 600 W - peak surge power handling capability under standardized lightning-surge waveform |
| IFSM | Not applicable - bidirectional device has no forward surge rating; only unidirectional variants specify 100 A |
| TJ max. | 150 °C - enables operation in under-hood automotive environments without thermal shutdown |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm height and 5.59 mm length, optimized for pick-and-place |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking (bidirectional symmetry).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage above ±10.5 V regardless of polarity |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC JESD201 Class 2 whisker resistance requirements |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 4 surges without degradation |
| Low clamping ratio (VC/VBR) | 1.54 typical - minimizes overvoltage stress on downstream MOSFET gates or MCU I/O pins |
| MSL Level 1 | Compatible with standard lead-free reflow profiles up to 260 °C peak, eliminating moisture sensitivity handling |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller ADC inputs in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces while maintaining signal integrity below 5.8 V operating range. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation nodes subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Common-mode transient suppressor mounted across bus pair to limit differential and common-mode overvoltage simultaneously. Use Value: Enables robust communication up to 1 Mbps without bit errors caused by >10.5 V common-mode spikes induced by nearby motor drives. |
| Consumer USB Port ESD Protection | Telecom DSL Line Interface |
Use Scenario: Shielding USB 2.0 D+/D− lines in smart home hubs from human-body-model (HBM) ESD events during plug/unplug cycles. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into USB connector footprint to absorb ±8 kV contact discharge. Use Value: Maintains <1.5 pF junction capacitance (per datasheet Fig. 4 at VWM), preserving signal rise time and eye diagram integrity at 480 Mbps. | Use Scenario: Front-end protection for ADSL/VDSL line drivers interfacing with outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge arrestor placed between transformer secondary and codec IC to limit transient energy entering silicon. Use Value: Clamps 10/1000 μs surges to ≤10.5 V while surviving repeated 600 W pulses - extends codec lifetime beyond 100,000 surge events. |
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; SMA package (larger footprint, higher RθJA) | Less suitable for high-energy automotive load dump; requires larger PCB area and exhibits higher thermal rise under sustained surge duty | Select when cost sensitivity outweighs surge margin and board space permits larger package |
| 1.5KE6.8CA | Higher PPPM = 1500 W but axial DO-201 package; incompatible with SMT assembly; VC = 11.2 V at 132 A | Requires through-hole mounting and manual soldering; unsuitable for automated production or compact layouts | Choose only for legacy repair or prototyping where reflow compatibility is not required |
Compared with SMAJ6.8CA and 1.5KE6.8CA, SM6T6V8CAHM3_A/I delivers optimal balance of 600 W surge capacity, SMB SMT compatibility, AEC-Q101 qualification, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring production scalability and long-term supply assurance.
Availability
SM6T6V8CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer USB interfaces, and telecom DSL line cards requiring stable component supply with guaranteed long-term availability.
Supply support for SM6T6V8CAHM3_A/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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-speed transient suppression in harsh environments, targeting automotive electronics, industrial controls, and communications infrastructure where AEC-Q101 validation and repeatable clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T6V8CAHM3_A/I?
The "CA" suffix in SM6T6V8CAHM3_A/I denotes a bidirectional configuration - meaning the device clamps voltage symmetrically in both polarities, unlike unidirectional variants (e.g., SM6T6V8A). This makes SM6T6V8CAHM3_A/I ideal for protecting AC-coupled or differential signal lines such as CAN bus or USB D+/D− where polarity reversal occurs. The breakdown voltage (6.45–7.14 V) and clamping voltage (10.5 V) apply equally in either direction, and no cathode band marking is present on the SMB package.
Is SM6T6V8CAHM3_A/I qualified for automotive use?
Yes, SM6T6V8CAHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3", which designates halogen-free, RoHS-compliant, and automotive-grade qualification. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JEDEC standards. This qualification validates SM6T6V8CAHM3_A/I for deployment in engine control units, body electronics, and ADAS sensor modules where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of SM6T6V8CAHM3_A/I under surge conditions?
The maximum clamping voltage of SM6T6V8CAHM3_A/I is 10.5 V when subjected to a 10/1000 μs waveform with a peak pulse current of 57 A, as specified in Vishay's datasheet Document Number 88385. This value represents the upper limit of voltage imposed on protected circuitry during worst-case transient events. At lower surge currents (e.g., 1 A), clamping voltage drops further - ensuring robust protection for 3.3 V and 5 V logic interfaces without exceeding safe overvoltage thresholds.
Does SM6T6V8CAHM3_A/I require special PCB layout considerations?
Yes, SM6T6V8CAHM3_A/I performs optimally when mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in the datasheet. This layout ensures effective heat dissipation and maintains the specified 100 °C/W thermal resistance (RθJA). Short, direct traces to protected ICs minimize inductance and prevent voltage overshoot; avoid routing sensitive signals near the TVS body. The SMB package has no polarity marking, simplifying placement but requiring verification of symmetric routing for bidirectional protection.
How does the "HM3" suffix differ from "E3" or "HE3" in SM6T6V8CAHM3_A/I?
The "HM3" suffix in SM6T6V8CAHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from "E3" (RoHS-compliant commercial grade only) and "HE3" (RoHS-compliant + AEC-Q101, but not halogen-free). All three meet JESD201 Class 2 whisker resistance, but HM3 adds halogen-free compliance per IEC 61249-2-21, making SM6T6V8CAHM3_A/I suitable for automotive OEMs enforcing strict material content restrictions. The "_A/I" denotes tape-and-reel packaging: "A" = 7" reel (750 pcs), "I" = 13" reel (3200 pcs).
SM6T6V8CAHM3_A/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:
- 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/I FAQ
1.How can I place an order for SM6T6V8CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CAHM3_A/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_A/I reliable?
The price and inventory of SM6T6V8CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SM6T6V8CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CAHM3_A/I?
SM6T6V8CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CAHM3_A/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_A/I?
For technical support, including SM6T6V8CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CAHM3_A/I requirements.
6.How does Aetrix verify that SM6T6V8CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SM6T6V8CAHM3_A/I?
All SM6T6V8CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SM6T6V8CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CAHM3_A/I Tags
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