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Vishay General Semiconductor - Diodes Division SM6T6V8CA-M3/5B
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- Part No.:
- SM6T6V8CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CA-M3/5B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,096
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Product details
Overview
SM6T6V8CA-M3/5B 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), 10.5 V maximum clamping voltage (VC) at 57 A peak pulse current, 600 W peak pulse power (10/1000 μs), and operates across -65 °C to +150 °C junction temperature range. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the SM6T6V8CA-M3/5B datasheet, SM6T6V8CA-M3/5B pinout, SM6T6V8CA-M3/5B application, or SM6T6V8CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.54), halogen-free RoHS-compliant construction, AEC-Q101 qualification eligibility, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
The SM6T6V8CA-M3/5B implements a silicon avalanche diode structure optimized for fast response (<1 ns) to ESD and surge events. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its low dynamic impedance ensures stable clamping under repetitive 10/1000 μs transients up to 600 W.
Designed for surface-mount use in space-constrained environments, it leverages glass-passivated junction technology for robust reliability and meets J-STD-020 MSL Level 1 (260 °C peak reflow). Thermal resistance is characterized at RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting thermal management in high-density layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche onset threshold for reliable triggering |
| 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) - clamping voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient power handling capacity under standardized surge waveform |
| IFSM | Not applicable - bidirectional device has no forward surge rating; only unidirectional variants specify 100 A |
| TJ range | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial ambient conditions |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 0.220" x 0.130" footprint and 0.086" height |
Pinout & Package
SMB (DO-214AA) package: surface-mount, molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | One terminal of symmetrical avalanche junction; accepts surge current regardless of polarity |
| Cathode | Transient current exit (either direction) | Second terminal of symmetrical junction; completes low-impedance path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when properly laid out |
| Low clamping voltage (10.5 V) | Provides 37% margin below typical 16 V automotive supply rail, safeguarding 12 V logic interfaces |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and JEDEC JESD201 Class 2 whisker resistance |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning stage. Use Value: Prevents latch-up or damage to 3.3 V/5 V ADC inputs while maintaining signal integrity via low capacitance and sub-1 ns response. | Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle body control modules against ESD (IEC 61000-4-2 ±8 kV contact) and burst noise. IC Role / Device Role / Timing Role: Paired SM6T6V8CA-M3/5B devices used differentially across CAN bus to suppress common-mode and differential-mode transients. Use Value: Maintains CAN signal eye diagram integrity during EMC testing by limiting voltage excursions to ≤10.5 V without adding series impedance. |
| Consumer USB Port ESD Protection | Industrial PLC Digital Input Stage |
Use Scenario: Shielding USB 2.0 D+/D- lines in smart home hubs from human-body-model ESD events during plug/unplug cycles. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at USB connector to shunt ESD current before reaching USB transceiver IC. Use Value: Achieves IEC 61000-4-2 Level 4 compliance (±8 kV contact) with minimal parasitic capacitance (<50 pF typical), preserving 480 Mbps data integrity. | Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: TVS placed across input terminals ahead of optocoupler or Schmitt trigger input stage to limit transient voltage. Use Value: Enables robust operation in factory environments with >100,000 surge cycles per channel, validated per IEC 61000-4-5 (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 SMB package, 600 W rating, but VBR min/max = 6.47 V / 7.15 V and VC = 11.2 V @ 53.5 A - slightly higher clamping voltage | Marginally lower surge current handling (53.5 A vs. 57 A); identical thermal and mounting characteristics | Preferred where tighter VBR tolerance (±5%) is required; verify clamping headroom in 5 V rail designs |
| 1.5KE6.8CA | Through-hole DO-201 package, same 6.8 V VBR, but VC = 10.5 V @ 57 A and PPPM = 1500 W - higher power rating but larger footprint | Requires PCB through-hole layout; unsuitable for high-density SMT-only assemblies | Select when system-level surge energy exceeds 600 W capability or legacy through-hole manufacturing is retained |
Compared with SMAJ6.8CA and 1.5KE6.8CA, the SM6T6V8CA-M3/5B offers optimal balance of compact SMB footprint, halogen-free compliance, and verified AEC-Q101 qualification path-making it preferred for new automotive and industrial SMT designs requiring long-term supply stability and environmental compliance.
Availability
SM6T6V8CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB port protection, and PLC digital input stages requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SM6T6V8CA-M3/5B 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 suppression in harsh environments, targeting automotive, industrial, and telecom applications where high-energy surge immunity, low clamping voltage, and automated assembly compatibility are critical design requirements.
FAQ
What is the breakdown voltage tolerance of SM6T6V8CA-M3/5B?
The SM6T6V8CA-M3/5B has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, corresponding to a ±5% tolerance around the nominal 6.8 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable overvoltage protection in 5 V and 3.3 V systems. The SM6T6V8CA-M3/5B maintains this specification under standard test conditions per JESD201.
Is SM6T6V8CA-M3/5B qualified to AEC-Q101?
The SM6T6V8CA-M3/5B itself is not AEC-Q101 qualified, but Vishay offers AEC-Q101-qualified versions under ordering codes HM3_X (e.g., SM6T6V8CAHM3_B/I). The M3 suffix indicates halogen-free RoHS compliance, while AEC-Q101 qualification requires the HM3 suffix plus revision code. Engineers selecting SM6T6V8CA-M3/5B for automotive use must verify qualification status via the specific part number and consult Vishay's official AEC-Q101 certificate for SM6T6V8CA-M3/5B.
What is the maximum clamping voltage of SM6T6V8CA-M3/5B under surge conditions?
The SM6T6V8CA-M3/5B exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 57 A. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88385 and represents the upper bound voltage seen by downstream circuitry during worst-case transient events. The SM6T6V8CA-M3/5B achieves this performance with low dynamic impedance and minimal voltage overshoot.
Can SM6T6V8CA-M3/5B be used in place of a unidirectional TVS like SM6T6V8A?
No - SM6T6V8CA-M3/5B is strictly bidirectional and lacks polarity marking, whereas SM6T6V8A is unidirectional with cathode band identification. Substituting them requires circuit redesign: bidirectional use demands symmetric placement across floating or AC-coupled nodes, while unidirectional devices require correct anode/cathode orientation relative to DC bias. The SM6T6V8CA-M3/5B cannot replace SM6T6V8A in DC-biased applications without risk of forward conduction or ineffective clamping.
What is the thermal resistance of SM6T6V8CA-M3/5B in standard PCB layout?
When mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, the SM6T6V8CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. These values assume standard JEDEC test conditions and define safe power derating above 25 °C ambient. The SM6T6V8CA-M3/5B's thermal performance supports continuous 5.0 W dissipation at 50 °C ambient when heatsinking is applied per Vishay's recommended pad layout.
SM6T6V8CA-M3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T6V8CA-M3/5B FAQ
1.How can I place an order for SM6T6V8CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CA-M3/5B 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 SM6T6V8CA-M3/5B reliable?
The price and inventory of SM6T6V8CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SM6T6V8CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CA-M3/5B?
SM6T6V8CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CA-M3/5B 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 SM6T6V8CA-M3/5B?
For technical support, including SM6T6V8CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CA-M3/5B requirements.
6.How does Aetrix verify that SM6T6V8CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CA-M3/5B 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 SM6T6V8CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SM6T6V8CA-M3/5B?
All SM6T6V8CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CA-M3/5B, 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 SM6T6V8CA-M3/5B part is unused and in its original packaging.
Return procedure for SM6T6V8CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CA-M3/5B Tags
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