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Vishay General Semiconductor - Diodes Division SM15T39AHE3_A/I
- Part No.:
- SM15T39AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T39AHE3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,340
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Product details
Overview
SM15T39AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR), and 53.9 V clamping voltage at 28.0 A peak pulse current. It protects automotive-grade signal lines and MOSFET gates against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T39AHE3_A/I datasheet, SM15T39AHE3_A/I pinout, SM15T39AHE3_A/I application, or SM15T39AHE3_A/I equivalent, key selection criteria include verified AEC-Q101 qualification, unidirectional polarity with cathode band marking, 150 °C max junction temperature, low-inductance SMC package, and clamping performance under 10/1000 μs surge conditions.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 33.3 V, it avalanches at VBR = 37.1–41.0 V (1 mA test current) and clamps to ≤53.9 V at IPPM = 28.0 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and robust surge handling.
Designed for high-reliability automotive applications, SM15T39AHE3_A/I meets AEC-Q101 stress testing requirements and is qualified for use in engine control units, ADAS sensor interfaces, and infotainment power rails where failure mode must be short-circuit under overstress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse operating voltage before avalanche conduction begins |
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - guaranteed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 53.9 V at 28.0 A (10/1000 μs) - clamping voltage limiting downstream IC stress during surge events |
| PPPM | 1500 W - peak pulse power rating confirming suitability for lightning-level threats per IEC 61000-4-5 |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - surface-mount package with 7.75 mm × 6.22 mm footprint and 2.06 mm height for automated placement |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD per AEC standard |
Pinout & Package
SM15T39AHE3_A/I is housed in an SMC (DO-214AB) plastic package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity is marked by a cathode band on the case end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-biased in protection mode) | Connected to protected line; conducts only during forward surge (e.g., accidental reverse bias) |
| Cathode | Reverse-biased terminal during normal operation | Connected to ground or lower-potential rail; avalanches to clamp transients above VWM |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges per IEC 61000-4-5 Level 4 without derating |
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) across temperature and lifetime |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive electronics including powertrain and ADAS subsystems |
| Low inductance SMC package | Minimizes voltage overshoot during fast-rising transients (e.g., <100 ns rise time) |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protects 12 V supply and CAN/LIN bus lines in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp transients before reaching MCU and analog front-end. Use Value: Clamps to 53.9 V at 28 A, preventing damage to 36 V-rated automotive MCUs and ensuring compliance with ISO 7637-2 Pulse 5a. | Use Scenario: Shields digital input/output signals of PLC modules connected to solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC I/O lines to absorb switching spikes from inductive loads. Use Value: Withstands 200 A non-repetitive forward surge (IFSM) and maintains <1.0 μA leakage at 33.3 V, preserving signal integrity in noisy factory environments. |
| Automotive ADAS Camera Interface | Telecom Power Supply Input Stage |
Use Scenario: Guards FPD-Link III or GMSL serial data lines and power pins in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on both power and signal paths to suppress ESD and cable discharge events. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure uninterrupted operation in sealed, thermally constrained camera housings. | Use Scenario: Front-end protection for AC/DC and DC/DC converters in base station power supplies subjected to lightning surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V intermediate bus to limit fault energy entering downstream regulation stages. Use Value: 1500 W PPPM rating allows single-device protection against 10/1000 μs surges up to 28 A without series impedance compromise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/57T | 600 W PPPM, SMA package, non-AEC-Q101, VC = 60.0 V @ 10.3 A | Lower power rating and no automotive qualification; suitable for commercial-grade consumer or industrial PCBs | Select when cost sensitivity outweighs automotive reliability or surge severity requirements |
| 1.5KE39A | Through-hole DO-201 package, 1500 W PPPM, VC = 58.1 V @ 25.8 A, no AEC-Q101 | Requires through-hole assembly; lacks automotive qualification and SMC's automated placement compatibility | Select only for legacy through-hole designs where board space and reflow compatibility are not constraints |
Compared with SMAJ39A-E3/57T and 1.5KE39A, SM15T39AHE3_A/I delivers higher surge robustness in a smaller, automotive-qualified SMC package-enabling compact, high-reliability designs for modern vehicle electronics without sacrificing clamping performance or manufacturability.
Availability
SM15T39AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive I/O protection, and ADAS camera interface applications requiring stable component supply and long-term lifecycle support.
Supply support for SM15T39AHE3_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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM15T Series is designed specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom-where AEC-Q101 qualification, precise clamping, and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SM15T39AHE3_A/I at its rated peak pulse current?
The SM15T39AHE3_A/I has a maximum clamping voltage (VC) of 53.9 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 28.0 A. This value is measured under standardized test conditions per JEDEC standards and ensures predictable overvoltage limiting for downstream circuitry during surge events.
Is SM15T39AHE3_A/I qualified for automotive applications?
Yes, SM15T39AHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code. It undergoes full stress testing-including high-temperature operating life, temperature cycling, and unbiased HAST-to meet automotive reliability requirements for use in ECUs, ADAS sensors, and infotainment systems.
What does the "_A/I" suffix mean in SM15T39AHE3_A/I?
The "_A/I" suffix in SM15T39AHE3_A/I indicates packaging configuration: "A" denotes unidirectional polarity, and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3500 units. This format supports high-volume automated SMT assembly with industry-standard reel dimensions and orientation.
What is the thermal resistance of SM15T39AHE3_A/I from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SM15T39AHE3_A/I is 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard PCB layout and natural convection cooling; forced airflow or heatsinking reduces effective RθJA.
How does SM15T39AHE3_A/I differ from bidirectional TVS diodes like SM15T39CA?
SM15T39AHE3_A/I is unidirectional and features a cathode band marking; it blocks voltage in one direction and clamps in reverse. In contrast, SM15T39CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. Use SM15T39AHE3_A/I for DC power rails or signal lines with defined polarity; use SM15T39CA for AC-coupled or differential lines like RS-485.
SM15T39AHE3_A/I 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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)
SM15T39AHE3_A/I FAQ
1.How can I place an order for SM15T39AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T39AHE3_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 SM15T39AHE3_A/I reliable?
The price and inventory of SM15T39AHE3_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 SM15T39AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T39AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T39AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T39AHE3_A/I?
SM15T39AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T39AHE3_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 SM15T39AHE3_A/I?
For technical support, including SM15T39AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T39AHE3_A/I requirements.
6.How does Aetrix verify that SM15T39AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T39AHE3_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 SM15T39AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T39AHE3_A/I?
All SM15T39AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T39AHE3_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 SM15T39AHE3_A/I part is unused and in its original packaging.
Return procedure for SM15T39AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T39AHE3_A/I Tags
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