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Vishay General Semiconductor - Diodes Division SM6T12AHM3_A/I
- Part No.:
- SM6T12AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12AHM3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,198
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Product details
Overview
SM6T12AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 12 V breakdown voltage (VBR = 11.4–12.6 V at 1.0 mA), 10.2 V stand-off voltage (VWM), 16.7 V clamping voltage (VC) at 36.0 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It protects MOSFETs and sensor signal lines in automotive ECUs against inductive switching transients.
For engineers reviewing the SM6T12AHM3_A/I datasheet, SM6T12AHM3_A/I pinout, SM6T12AHM3_A/I application, or SM6T12AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB package thermal data, and real-world protection use cases for industrial and automotive board-level surge design.
Technical Context
The SM6T12AHM3_A/I operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction to achieve low dynamic impedance and fast response (<1 ns) to ESD and lightning-induced surges. Its 100 °C/W junction-to-ambient thermal resistance requires defined copper pad layout (0.2" × 0.2") for full 600 W pulse rating.
Designed for surface-mount automated placement, it meets J-STD-020 MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance. The HM3 suffix confirms halogen-free, RoHS-compliant construction with AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise breakdown onset for reliable clamping initiation |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 5.0 μA |
| VC @ IPPM | 16.7 V at 36.0 A (10/1000 μs) - clamped voltage seen by protected IC during worst-case surge |
| PPPM | 600 W - peak transient power handling capacity under standardized waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for derating compliance |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by molded band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return node | Connected to ground or low-impedance return plane; carries full IPPM during clamping |
| Cathode | Protected line connection / clamping reference | Connected to line being protected (e.g., sensor VCC or signal); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<5 μA at VWM) over 15-year automotive life |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Low inductance SMB package | Minimizes voltage overshoot during sub-ns ESD events (IEC 61000-4-2 ±15 kV contact) |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of microcontroller-based ECU from load dump and inductive kickback during solenoid de-energization. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VBAT and ground, triggered within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤16.7 V, preventing latch-up or gate oxide damage in downstream 16-bit MCU and CAN transceivers. | Use Scenario: Shields analog output (4–20 mA) of pressure sensor from field wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-clamp protector on sensor's VOUT line, operating continuously at 10.2 V with <5 μA leakage. Use Value: Maintains signal integrity during 1 kV/500 A surge tests while preserving 12-bit ADC accuracy via low capacitance and stable VC. |
| Automotive Camera Module Power Rail | Telecom Base Station DC Feeder Protection |
Use Scenario: Guards 12 V input of MIPI camera module against hot-swap transients and battery reversal spikes in ADAS front cameras. IC Role / Device Role / Timing Role: Primary unidirectional clamp on main power entry, coordinated with upstream fuse and downstream LDO. Use Value: Withstands 100 A IFSM surge and clamps to 16.7 V, ensuring uninterrupted image streaming during vehicle ignition cycles. | Use Scenario: Installed on -48 V DC feeder lines entering telecom base station cabinets to absorb lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube, absorbing residual energy with fast VBR response. Use Value: Delivers 600 W pulse handling at -48 V system level, reducing failure rate of PMICs and FPGA power sequencing circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5B | Same SMB package, 12 V VBR, but 400 W PPPM and non-AEC-Q101 rated | Limited to commercial-grade industrial controls; not qualified for automotive under-hood use | Select when cost sensitivity outweighs AEC-Q101 requirement and surge threat level is ≤400 W |
| SMCJ12A-H | Higher 1500 W PPPM in larger SMC (DO-214AB) package; same VBR/VC specs | Used where higher energy absorption is needed (e.g., alternator load dump), but requires PCB area increase | Choose when system-level testing demands >600 W margin and board space allows SMC footprint |
Compared with SMAJ12A-E3/5B and SMCJ12A-H, the SM6T12AHM3_A/I uniquely balances AEC-Q101 qualification, SMB footprint, and 600 W capability-making it optimal for space-constrained automotive modules needing certified reliability without layout redesign.
Availability
SM6T12AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interfaces, telecom DC feeder protection, and ADAS camera power rails requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T12AHM3_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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified components.
The SM6T Series is engineered specifically for board-level transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, compact SMB packaging, and repeatable 600 W clamping performance are mandatory.
FAQ
What is the exact breakdown voltage range for SM6T12AHM3_A/I?
The SM6T12AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V at a test current of 1.0 mA, as specified in the Vishay SM6T datasheet revision 09-Jan-2024. This tight 10% tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in SM6T12AHM3_A/I-based protection circuits.
Is SM6T12AHM3_A/I qualified for automotive applications?
Yes, SM6T12AHM3_A/I is AEC-Q101 qualified, confirmed by the "HM3" suffix in its ordering code, which denotes halogen-free, RoHS-compliant construction with full automotive stress testing. This qualification covers temperature cycling, humidity bias, mechanical shock, and accelerated life testing required for engine bay and chassis-mounted electronics using SM6T12AHM3_A/I.
What is the clamping voltage of SM6T12AHM3_A/I at its rated peak pulse current?
The SM6T12AHM3_A/I clamps to a maximum of 16.7 V at its rated peak pulse current of 36.0 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events, directly impacting survivability of downstream SM6T12AHM3_A/I-connected ICs.
Does SM6T12AHM3_A/I have bidirectional capability?
No, SM6T12AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in its part number. It conducts only in reverse bias above VBR; forward conduction follows standard diode behavior. For bidirectional protection, Vishay offers SM6T12CA variants - SM6T12AHM3_A/I must be oriented with cathode toward the protected line.
What package type and mounting requirements apply to SM6T12AHM3_A/I?
SM6T12AHM3_A/I uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads. Per Vishay specification, it requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to sustain full 600 W pulse rating; smaller pads cause thermal derating. The SM6T12AHM3_A/I is MSL Level 1 and compatible with standard reflow profiles peaking at 260 °C.
SM6T12AHM3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
SM6T12AHM3_A/I FAQ
1.How can I place an order for SM6T12AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12AHM3_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 SM6T12AHM3_A/I reliable?
The price and inventory of SM6T12AHM3_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 SM6T12AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T12AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12AHM3_A/I?
SM6T12AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12AHM3_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 SM6T12AHM3_A/I?
For technical support, including SM6T12AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12AHM3_A/I requirements.
6.How does Aetrix verify that SM6T12AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T12AHM3_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 SM6T12AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T12AHM3_A/I?
All SM6T12AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12AHM3_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 SM6T12AHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T12AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T12AHM3_A/I Tags
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