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Vishay General Semiconductor - Diodes Division SM6T27AHM3/H
- Part No.:
- SM6T27AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T27AHM3/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,618
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Product details
Overview
SM6T27AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMB (DO-214AA) package, with 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V clamping voltage (VC) at 16 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform - used to protect MOSFETs, sensor signal lines, and automotive ECUs against inductive switching transients.
For engineers reviewing the SM6T27AHM3/H datasheet, SM6T27AHM3/H pinout, SM6T27AHM3/H application, or SM6T27AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB package thermal data, clamping performance under standardized surge waveforms, and direct alternatives for circuit protection design-in.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed for fast response (<1 ns typical) to transient overvoltages. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 μA at 23.1 V).
Rated for 150 °C maximum junction temperature and compliant with JESD201 Class 2 whisker resistance, the SM6T27AHM3/H supports automotive-grade reliability with halogen-free, RoHS-compliant construction and MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 16 A (10/1000 μs) - actual voltage seen by protected IC during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout design |
| TJ max. | +150 °C - enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference plane during clamping event |
| Cathode | Transient voltage sensing node | Connected to protected line (e.g., CAN_H, sensor VOUT, MOSFET gate); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges in automotive power nets without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot across protected components during fast transients |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive use including temperature cycling, HTRB, and ESD testing |
| Low inductance SMB package | Reduces parasitic ringing during sub-100 ns transients (e.g., EFT bursts) |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules from load-dump and inductive kickback events per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 23.1 V. Use Value: Limits voltage excursion to ≤37.5 V during 16 A 10/1000 μs surge, preserving MCU and driver IC integrity. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal path to suppress ESD (IEC 61000-4-2) and burst noise (IEC 61000-4-4). Use Value: Sub-1 μA leakage at 23.1 V avoids DC offset errors; 37.5 V clamping prevents ADC input saturation. |
| Automotive Body Electronics | MOSFET Gate Protection |
Use Scenario: Securing LIN bus transceivers and door module actuators against battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC input with cathode tied to supply, anode to ground. Use Value: AEC-Q101 qualification ensures reliability across -40 °C to +125 °C ambient; 150 °C TJ max allows margin under sustained load. | Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by microcontrollers in motor control H-bridges. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes during switching transitions. Use Value: 23.1 V VWM permits full 24 V logic swing while clamping spikes >37.5 V within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same SMB package, 24 V VWM, 38.9 V VC @ 15.4 A, 400 W PPPM | Lower power rating; suitable for non-automotive consumer/industrial use only | Select when AEC-Q101 qualification is not required and surge energy is ≤400 W |
| SM6T27AHE3/H | Identical electrical specs, same SMB package, but RoHS-compliant commercial grade (not AEC-Q101 qualified) | Lacks automotive qualification; not approved for under-hood or safety-critical systems | Choose for cost-sensitive non-automotive designs where halogen-free is optional |
Compared with SM6T27AHM3/H, SMAJ24A offers lower clamping robustness and no automotive qualification, while SM6T27AHE3/H matches all electrical parameters but omits AEC-Q101 validation - making SM6T27AHM3/H the sole option for production automotive ECUs requiring halogen-free and qualified reliability.
Availability
SM6T27AHM3/H is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and MOSFET gate protection circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T27AHM3/H 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 was developed specifically for robust transient suppression in automotive and industrial environments, combining high-power handling, AEC-Q101 compliance, and compact SMB packaging for space-constrained PCB layouts.
FAQ
What is the clamping voltage of SM6T27AHM3/H at its rated peak pulse current?
The SM6T27AHM3/H has a maximum clamping voltage (VC) of 37.5 V when subjected to a 10/1000 μs waveform peak pulse current (IPPM) of 16 A. This value is measured under standardized test conditions per JEDEC standards and reflects the actual voltage imposed on protected circuitry during surge events. The SM6T27AHM3/H maintains this clamping performance across its qualified operating temperature range.
Is SM6T27AHM3/H qualified for automotive applications?
Yes, SM6T27AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification. This qualification makes SM6T27AHM3/H suitable for automotive body electronics, powertrain subsystems, and infotainment interfaces where reliability under harsh environmental conditions is mandatory.
What does the "HM3" suffix indicate in SM6T27AHM3/H?
The "HM3" suffix in SM6T27AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive material and reliability standards. The "H" indicates tape-and-reel packaging (7" reel, 750 units), while "M3" specifies the halogen-free, qualified material set - critical for OEM approval in automotive supply chains.
How does SM6T27AHM3/H differ from SM6T27AHE3/H?
SM6T27AHM3/H and SM6T27AHE3/H share identical electrical specifications and SMB packaging, but differ in qualification and material content: SM6T27AHM3/H is halogen-free and AEC-Q101 qualified, whereas SM6T27AHE3/H is RoHS-compliant but lacks automotive qualification and halogen-free certification. For designs requiring automotive approval, SM6T27AHM3/H is the only valid choice.
What is the maximum operating junction temperature for SM6T27AHM3/H?
The maximum operating junction temperature (TJ) for SM6T27AHM3/H is +150 °C, as specified in Vishay's official datasheet. This rating enables reliable operation in under-hood automotive environments and high-temperature industrial enclosures. Thermal design must account for RθJA = 100 °C/W and recommended 0.2" × 0.2" copper pads to ensure safe derating above 25 °C ambient.
SM6T27AHM3/H 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
SM6T27AHM3/H FAQ
1.How can I place an order for SM6T27AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T27AHM3/H 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 SM6T27AHM3/H reliable?
The price and inventory of SM6T27AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T27AHM3/H is usually 5 days.
3.What payment methods are accepted for SM6T27AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T27AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T27AHM3/H?
SM6T27AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T27AHM3/H 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 SM6T27AHM3/H?
For technical support, including SM6T27AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T27AHM3/H requirements.
6.How does Aetrix verify that SM6T27AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T27AHM3/H 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 SM6T27AHM3/H meets industry standards.
7.What is the process for return or replacement of SM6T27AHM3/H?
All SM6T27AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T27AHM3/H, 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 SM6T27AHM3/H part is unused and in its original packaging.
Return procedure for SM6T27AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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