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Vishay General Semiconductor - Diodes Division SM15T15AHE3_A/H
- Part No.:
- SM15T15AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T15AHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,123
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Product details
Overview
SM15T15AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 15 V standoff voltage (VWM = 12.8 V), and clamping voltage of 21.2 V at 71 A peak pulse current - used to protect automotive sensor signal lines and I/O interfaces against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T15AHE3_A/H datasheet, SM15T15AHE3_A/H pinout, SM15T15AHE3_A/H application, or SM15T15AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low-inductance SMC package, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity standards.
Technical Context
The SM15T15AHE3_A/H employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and stable clamping under repetitive 10/1000 μs surges up to 1500 W. Its unidirectional configuration provides forward conduction capability with 200 A IFSM rating, enabling protection of DC-biased lines such as automotive CAN or LIN bus power rails.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –65 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for under-hood automotive environments where thermal cycling and vibration resistance are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - maximum continuous reverse voltage before clamping begins; ensures no leakage interference on 12 V automotive supply rails. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - precise threshold for reliable turn-on during transients without false triggering. |
| VC (Clamping Voltage) | 21.2 V at 71 A (10/1000 μs) - limits downstream IC voltage stress to safe levels during surge events. |
| PPPM | 1500 W - handles high-energy lightning-induced surges per IEC 61000-4-5, Level 4 (4 kV line-to-ground). |
| TJ max | +150 °C - supports operation in engine compartment locations with minimal derating. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height for automated assembly. |
Pinout & Package
SM15T15AHE3_A/H uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, and polarity indicated by cathode band on the body. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path; enables conduction during negative transients when used with DC bias. |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., sensor VCC or signal); clamps positive transients to ~21.2 V above anode potential. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor units with extended temperature and reliability requirements. |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from inductive load switching (e.g., fuel injectors, solenoids) without degradation. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across humidity and thermal cycling stress. |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for protecting high-speed digital interfaces. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine management systems exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VOUT and ground to clamp positive transients while allowing normal DC bias. Use Value: Limits clamped voltage to 21.2 V, safeguarding 3.3 V or 5 V ADC inputs and preventing latch-up in signal conditioning ICs. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from relay contact bounce and motor drive noise. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input line, referenced to common ground, absorbing repetitive 10/1000 μs surges up to 71 A. Use Value: Maintains system uptime by preventing false triggering and component damage during factory floor EMI events. |
| Telecom Power Interface | Consumer USB Power Delivery |
Use Scenario: Safeguarding 48 V PoE-powered Ethernet ports against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary-level TVS on PSE side, positioned upstream of DC-DC converter, handling up to 1500 W surges. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground) without additional series impedance. |
Use Scenario: Protecting USB-C VBUS lines in portable chargers and docking stations against hot-plug transients and ESD. IC Role / Device Role / Timing Role: Unidirectional suppressor between VBUS and GND, leveraging 12.8 V standoff to avoid interference with 5–20 V PD negotiation. Use Value: Clamps VBUS spikes to ≤21.2 V within nanoseconds, preserving USB PD controller integrity and certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Same 15 V VWM and 21.2 V VC, but rated for 400 W PPPM (SMA package); lower thermal mass and higher RθJA (110 °C/W). | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use below 125 °C ambient. | Select when cost sensitivity outweighs automotive qualification and surge energy requirements are ≤400 W. |
| 1.5KE15A | Through-hole DO-201 package; identical electrical specs but larger footprint, higher inductance, and no AEC-Q101 validation. | Requires manual or wave soldering; unsuitable for high-density automotive PCBs and automated SMT lines. | Choose only for legacy through-hole designs or prototyping where board space and assembly method permit. |
Compared with SMAJ15A-E3/57T and 1.5KE15A, SM15T15AHE3_A/H delivers 3.75× higher surge power handling, AEC-Q101 assurance for automotive deployment, and SMC package compatibility with modern SMT processes - making it the preferred choice for production-grade vehicle electronics requiring robust, standardized protection.
Availability
SM15T15AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power interface circuits requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for SM15T15AHE3_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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SM15T Series is designed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge capability, AEC-Q101 validation, and low-inductance SMC packaging are essential.
FAQ
What is the peak pulse current rating of SM15T15AHE3_A/H at 10/1000 μs?
The SM15T15AHE3_A/H has a peak pulse current (IPPM) rating of 71 A when subjected to a 10/1000 μs waveform. This value is derived directly from its 1500 W peak pulse power rating and 21.2 V clamping voltage (VC), calculated as IPPM = PPPM / VC. It is validated per Figure 3 in Vishay document 88380 and applies under standard mounting conditions (8.0 mm × 8.0 mm copper pads).
Is SM15T15AHE3_A/H suitable for bidirectional transient protection?
No, SM15T15AHE3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SM15T15CA). Using SM15T15AHE3_A/H on AC-coupled or floating lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit.
Does SM15T15AHE3_A/H meet automotive qualification standards?
Yes, SM15T15AHE3_A/H is AEC-Q101 qualified, confirmed by its "HE3" suffix and explicit statement in Vishay document 88380. This qualification covers stress tests including temperature cycling, humidity bias HAST, mechanical shock, and high-temperature operating life - validating its use in automotive powertrain, chassis, and body electronics.
What is the maximum operating junction temperature for SM15T15AHE3_A/H?
The maximum operating junction temperature (TJmax) for SM15T15AHE3_A/H is +150 °C, as specified in the "Maximum Ratings" table of Vishay document 88380. This allows full-rated operation in under-hood environments and enables design margin for thermal derating above 25 °C ambient, supported by RθJA = 75 °C/W.
How does the SMC package of SM15T15AHE3_A/H compare to SMA in terms of surge handling?
The SMC package of SM15T15AHE3_A/H enables 1500 W peak pulse power handling due to superior thermal dissipation (RθJL = 15 °C/W) and larger copper pad area versus the smaller SMA package (e.g., SMAJ15A, rated at 400 W). The SMC's 7.75 mm × 6.22 mm footprint and lower parasitic inductance also improve clamping fidelity for fast transients.
SM15T15AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 71A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SM15T15AHE3_A/H FAQ
1.How can I place an order for SM15T15AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T15AHE3_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 SM15T15AHE3_A/H reliable?
The price and inventory of SM15T15AHE3_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 SM15T15AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T15AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T15AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T15AHE3_A/H?
SM15T15AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T15AHE3_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 SM15T15AHE3_A/H?
For technical support, including SM15T15AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T15AHE3_A/H requirements.
6.How does Aetrix verify that SM15T15AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T15AHE3_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 SM15T15AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T15AHE3_A/H?
All SM15T15AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T15AHE3_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 SM15T15AHE3_A/H part is unused and in its original packaging.
Return procedure for SM15T15AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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