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Vishay General Semiconductor - Diodes Division SM6T12AHE3_A/H
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- Part No.:
- SM6T12AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12AHE3_A/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,610
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Product details
Overview
SM6T12AHE3_A/H 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), 16.7 V maximum clamping voltage (VC) at 36.0 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T12AHE3_A/H datasheet, SM6T12AHE3_A/H pinout, SM6T12AHE3_A/H application, or SM6T12AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 100 °C/W junction-to-ambient thermal resistance, low leakage (<5.0 μA at 10.2 V), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, activating when transient voltage exceeds its standoff voltage (VWM = 10.2 V) to divert surge current away from protected circuitry. Its glass-passivated junction ensures stable breakdown behavior and low leakage under steady-state conditions.
The device delivers consistent clamping performance across temperature (–65 °C to +150 °C operating range) and supports high-reliability automotive applications via AEC-Q101 qualification. Its SMB package enables compact layout while maintaining 600 W pulse handling capability under standardized 10/1000 μs waveform testing conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise turn-on threshold for transient suppression |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 16.7 V at 36.0 A - clamping voltage during 600 W surge, limiting stress on downstream ICs |
| IPPM | 36.0 A - peak pulse current it safely shunts without failure under 10/1000 μs waveform |
| PPPM | 600 W - peak transient power dissipation capability, critical for inductive load switching events |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance indicating need for adequate copper pad area (0.2" × 0.2") for power derating |
Pinout & Package
SMB (DO-214AA) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 wetting balance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; reverse-biased during normal operation, conducts during overvoltage |
| Anode | Cathode of internal PN junction | Typically tied to ground or lower-potential rail to complete clamping path for transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Ensures stable VBR tolerance and low long-term parameter drift under thermal stress |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (e.g., ESD, ISO 7637-2 pulses) |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| 600 W peak pulse rating | Handles high-energy surges from inductive load switching in 12 V vehicle systems |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches precision ADC front-end or op-amp buffer stages. Use Value: Maintains signal integrity by limiting clamped voltage to 16.7 V, well below 20 V absolute maximum ratings of common sensor interface ICs. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to field wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed between terminal block and optocoupler input stage. Use Value: Withstands 36 A peak pulses without degradation, enabling reliable operation in harsh factory floor environments per IEC 61000-4-5 Level 3. |
| MOSFET Gate Driver Protection | Consumer Power Supply ESD Guard |
Use Scenario: Shielding high-side N-channel MOSFET gate drive traces from coupling-induced transients in half-bridge motor drivers. IC Role / Device Role / Timing Role: Low-capacitance (typ. 190 pF at 0 V) unidirectional clamp between gate and source to prevent VGS overstress. Use Value: Clamps within nanoseconds to 16.7 V, avoiding gate oxide breakdown while adding negligible propagation delay to PWM signals. | Use Scenario: Adding secondary-level surge immunity to USB-C power delivery paths in smart home hubs after primary AC/DC stage. IC Role / Device Role / Timing Role: Secondary TVS on 5–20 V DC bus lines to absorb contact discharge ESD (IEC 61000-4-2 ±8 kV) and cable discharge events. Use Value: RoHS-compliant and halogen-free variant (HE3 suffix) meets environmental compliance for global consumer product certifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same SMB package, 12 V VBR, but rated for 400 W PPPM and not AEC-Q101 qualified | Limited to commercial-grade industrial or consumer use; lacks automotive qualification documentation | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is ≤400 W |
| SMCJ12A | Higher 1500 W PPPM, same VBR, but larger SMC (DO-214AB) package with 2.5× footprint area | Used where higher surge margin is required and board space permits larger package | Choose when system-level surge testing exceeds 600 W and PCB layout allows SMC footprint |
Compared with SMAJ12A and SMCJ12A, SM6T12AHE3_A/H delivers certified automotive reliability in the smallest footprint among 12 V 600 W TVS diodes, balancing space efficiency, surge margin, and qualification rigor for safety-critical signal lines.
Availability
SM6T12AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and MOSFET gate driver circuits requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for SM6T12AHE3_A/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, power handling, and application-specific qualification.
The SM6T Series is designed specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, robust glass-passivated junctions, and optimized SMB packaging for automated manufacturing.
FAQ
What is the exact breakdown voltage range for SM6T12AHE3_A/H?
The SM6T12AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V measured at 1.0 mA test current, per Vishay's datasheet revision 09-Jan-2024. This tight 10% tolerance ensures predictable clamping onset across production lots and temperature extremes, making SM6T12AHE3_A/H suitable for precision protection schemes where overvoltage margin must be tightly controlled.
Is SM6T12AHE3_A/H qualified for automotive applications?
Yes, SM6T12AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T series datasheet (Doc. #88385). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-ensuring SM6T12AHE3_A/H meets reliability requirements for under-hood and chassis-mounted automotive electronics.
What does the "HE3" suffix indicate in SM6T12AHE3_A/H?
The "HE3" suffix in SM6T12AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade E3 variants. The "H" in the ordering code specifies 7" tape-and-reel packaging (750 units per reel), while "A/H" indicates revision level A and packaging type H per Vishay's ordering information table-critical for traceability and process control in automotive production.
What is the maximum clamping voltage of SM6T12AHE3_A/H during a surge event?
The maximum clamping voltage (VC) of SM6T12AHE3_A/H is 16.7 V when subjected to its rated peak pulse current of 36.0 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions, directly supporting design margin calculations for downstream components' absolute maximum ratings.
Can SM6T12AHE3_A/H replace SM6T12A-E3/52 in an existing design?
SM6T12AHE3_A/H is not a direct drop-in replacement for SM6T12A-E3/52 due to differences in qualification and packaging: SM6T12AHE3_A/H is AEC-Q101 qualified and supplied in 7" tape (H code), whereas SM6T12A-E3/52 is commercial-grade and also in 7" tape (52 code). Electrical parameters are identical, but automotive designs requiring AEC-Q101 must verify SM6T12AHE3_A/H's full qualification documentation before substitution.
SM6T12AHE3_A/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:
- 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 (SMBJ)
SM6T12AHE3_A/H FAQ
1.How can I place an order for SM6T12AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12AHE3_A/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 SM6T12AHE3_A/H reliable?
The price and inventory of SM6T12AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T12AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T12AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12AHE3_A/H?
SM6T12AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12AHE3_A/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 SM6T12AHE3_A/H?
For technical support, including SM6T12AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12AHE3_A/H requirements.
6.How does Aetrix verify that SM6T12AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T12AHE3_A/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 SM6T12AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T12AHE3_A/H?
All SM6T12AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12AHE3_A/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 SM6T12AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T12AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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