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Vishay General Semiconductor - Diodes Division SM6T30A-M3/52
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- Part No.:
- SM6T30A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T30A-M3/52.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,285
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Product details
Overview
SM6T30A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 41.5 V maximum clamping voltage (VC) at 14.5 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform-designed for protecting MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T30A-M3/52 datasheet, SM6T30A-M3/52 pinout, SM6T30A-M3/52 application, or SM6T30A-M3/52 equivalent, key selection criteria include verified unidirectional polarity, halogen-free RoHS-compliant construction (M3 suffix), AEC-Q101 qualification eligibility via HM3 variant, and SMB package thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering at VBR ≥ 28.5 V to limit transient overvoltage across protected circuit nodes. Its low-inductance SMB package and glass-passivated junction support fast response (< 1 ns typical) to ESD and surge events.
It delivers 600 W peak pulse power handling under standardized 10/1000 μs waveform conditions with derating above 25 °C ambient, and maintains ≤1.0 μA reverse leakage at 25.6 V stand-off voltage-enabling reliable protection without DC loading in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise clamping initiation threshold for overvoltage detection |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 41.5 V at 14.5 A - clamped voltage during 600 W transient, limiting stress on downstream ICs |
| PPPM | 600 W (10/1000 μs) - peak surge energy absorption capacity without failure |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.205" footprint and J-STD-020 MSL level 1 rating |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction, clamps reverse transients |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, 0.220" × 0.205" body, 0.086" cathode band width, and recommended 0.2" × 0.2" copper pad layout per terminal for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| Glass passivated junction | Ensures stable VBR and low leakage over temperature and lifetime, critical for long-term reliability |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for industrial and automotive production without sacrificing performance |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (e.g., ESD), improving clamping fidelity |
| AEC-Q101 qualification path | HM3 variant supports automotive-grade deployment; base M3 part shares identical die and construction |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive kick in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤41.5 V during 14.5 A surges, preventing damage to 3.3 V/5 V interface ICs with ±15 kV ESD immunity. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input channels, absorbing repetitive 600 W pulses without degradation. Use Value: Maintains ≤1.0 μA leakage at 25.6 V, ensuring no false triggering in high-impedance sensing circuits. |
| Power Supply Rail Clamp | MOSFET Gate Protection |
Use Scenario: Secondary overvoltage suppression on regulated 24 V or 30 V supply rails feeding microcontrollers and communication ICs. IC Role / Device Role / Timing Role: Parallel-connected clamping diode referenced to common ground, activated only during fault conditions. Use Value: Clamps rail spikes to 41.5 V before they exceed absolute maximum ratings of downstream LDOs or PMICs. | Use Scenario: Shielding N-channel MOSFET gates from Miller-induced voltage spikes during high-dI/dt switching in motor drivers. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) unidirectional clamp between gate and source. Use Value: Responds in <1 ns to suppress >30 V gate excursions, preventing unintended turn-on or oxide breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMB package, 30 V VBR, but lower PPPM = 400 W and higher VC = 48.4 V at 8.3 A | Less robust for ISO 7637-2 Pulse 5a (load dump); suitable for lower-energy ESD-only zones | Select SMAJ30A only where 600 W margin is unnecessary and cost sensitivity outweighs surge headroom |
| SMCJ30A | Larger SMC (DO-214AB) package, same 30 V VBR, higher PPPM = 1500 W, VC = 48.4 V at 31 A | Requires PCB redesign; used where sustained surge energy exceeds SMB thermal limits | Choose SMCJ30A when system-level testing confirms >600 W transient exposure and board space allows larger footprint |
Compared with SMAJ30A and SMCJ30A, SM6T30A-M3/52 delivers optimal balance of 600 W surge capability, SMB footprint compatibility, and 41.5 V clamping-making it preferred for space-constrained automotive and industrial designs requiring validated AEC-Q101 readiness path.
Availability
SM6T30A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, 24 V power rail clamping, and MOSFET gate protection requiring stable component supply, halogen-free compliance, and traceable sourcing.
Supply support for SM6T30A-M3/52 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 high-reliability transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where consistent clamping performance, low leakage, and AEC-Q101 qualification readiness are mandatory.
FAQ
What is the breakdown voltage tolerance for SM6T30A-M3/52?
The SM6T30A-M3/52 has a specified breakdown voltage range of 28.5 V to 31.5 V at 1.0 mA test current, per Vishay's datasheet revision 09-Jan-2024. This ±5% tolerance ensures predictable clamping onset while accommodating process variation. The value is measured under controlled 300 μs square-wave pulse conditions and applies directly to the SM6T30A-M3/52 unit without derating.
Is SM6T30A-M3/52 suitable for automotive applications?
Yes, SM6T30A-M3/52 is halogen-free and RoHS-compliant, and its construction matches the AEC-Q101 qualified HM3 variant-sharing identical die, packaging, and electrical characteristics. While the M3 suffix denotes commercial grade, the SM6T30A-M3/52 is widely deployed in automotive sensor modules and infotainment power supplies where full qualification is supported by design-in with HM3 derivatives.
What is the maximum clamping voltage of SM6T30A-M3/52 under surge conditions?
The SM6T30A-M3/52 exhibits a maximum clamping voltage (VC) of 41.5 V when subjected to a 10/1000 μs waveform at 14.5 A peak pulse current. This value is guaranteed per datasheet and reflects worst-case device behavior at TA = 25 °C with proper PCB pad layout-ensuring protected ICs see no more than 41.5 V during standardized surge events.
Does SM6T30A-M3/52 have bidirectional capability?
No, SM6T30A-M3/52 is strictly unidirectional. Its cathode is marked by a band, and it conducts only when reverse-biased beyond VBR. For bidirectional operation, Vishay specifies the CA-suffixed variant (e.g., SM6T30CA), which lacks polarity marking and clamps in both directions-SM6T30A-M3/52 must not be substituted for bidirectional use without circuit redesign.
What is the thermal resistance of SM6T30A-M3/52 in free air?
The SM6T30A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal, per Vishay's thermal characterization. This value assumes no heatsink and defines safe power dissipation limits: at 50 °C ambient, the 5.0 W steady-state rating yields ~100 °C junction rise, staying within the +150 °C maximum.
SM6T30A-M3/52 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
SM6T30A-M3/52 FAQ
1.How can I place an order for SM6T30A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T30A-M3/52 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 SM6T30A-M3/52 reliable?
The price and inventory of SM6T30A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T30A-M3/52 is usually 5 days.
3.What payment methods are accepted for SM6T30A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T30A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T30A-M3/52?
SM6T30A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T30A-M3/52 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 SM6T30A-M3/52?
For technical support, including SM6T30A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T30A-M3/52 requirements.
6.How does Aetrix verify that SM6T30A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T30A-M3/52 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 SM6T30A-M3/52 meets industry standards.
7.What is the process for return or replacement of SM6T30A-M3/52?
All SM6T30A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T30A-M3/52, 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 SM6T30A-M3/52 part is unused and in its original packaging.
Return procedure for SM6T30A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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