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Vishay General Semiconductor - Diodes Division SM15T30AHE3/57T
- Part No.:
- SM15T30AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T30AHE3/57T.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,315
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Product details
Overview
SM15T30AHE3/57T 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), 30 V stand-off voltage (VWM), 31.5 V maximum breakdown voltage (VBR), and 41.5 V clamping voltage at 36 A peak pulse current - used to protect MOSFETs, ICs, and sensor signal lines against lightning-induced and inductive-switching transients in automotive and industrial power electronics.
For engineers reviewing the SM15T30AHE3/57T datasheet, SM15T30AHE3/57T pinout, SM15T30AHE3/57T application, or SM15T30AHE3/57T equivalent, key selection criteria include verified clamping performance at 36 A, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 75 °C/W) under standard 8.0 mm × 8.0 mm copper pad layout.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 25.6 V, it avalanches at VBR = 28.5–31.5 V (tested at 1.0 mA), limiting transient energy by diverting surge current up to IPPM = 36 A while maintaining VC ≤ 41.5 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low inductance for fast response.
Designed for high-reliability environments, SM15T30AHE3/57T meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is AEC-Q101 qualified - distinguishing it from commercial-grade E3/M3 variants in automotive-grade supply chain traceability and stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - maximum continuous reverse operating voltage before conduction begins; sets system-level overvoltage threshold for protected circuitry. |
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 41.5 V at 36 A (10/1000 μs) - clamping voltage during worst-case surge; defines maximum voltage seen by downstream components. |
| PPPM | 1500 W - peak transient power handling capability; validates suitability for lightning and motor-switching threats per IEC 61000-4-5. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on 8.0 mm × 8.0 mm copper pads; enables thermal design margin estimation at 6.5 W steady-state dissipation. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial ambient conditions. |
| AEC-Q101 | Qualified - certified for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case meeting UL 94 V-0 flammability rating; dimensions 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode indicated by molded band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional mode) | Connected to ground or low-side reference; completes shunt path during reverse transient events. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line (e.g., 24 V rail or sensor input); avalanche conduction initiates here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Validated protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems without derating. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and <1.0 μA leakage at VWM, critical for low-power sensor bias networks. |
| AEC-Q101 qualification | Includes HTOL, TC, UHAST, and ESD testing - required for placement in automotive powertrain and chassis modules. |
| Low-inductance SMC package | Minimizes voltage overshoot during sub-100 ns transients; enables effective protection of fast-switching MOSFET gates. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying SMT manufacturing flow. |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply rails in junction boxes and battery management systems from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and ground, clamping spikes within 1 ns to prevent MOSFET gate oxide failure. Use Value: With VC = 41.5 V at 36 A, limits rail excursion below 45 V - preserving 48 V-rated controllers and reducing need for oversized input capacitors. |
Use Scenario: Safeguarding analog inputs and encoder feedback lines in servo drives exposed to inductive kickback from 3-phase motor windings. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential signal pairs, suppressing common-mode surges up to 1 kV without distorting 1 MHz encoder waveforms. Use Value: Junction capacitance <100 pF (typ.) and low inductance maintain signal integrity; AEC-Q101 qualification ensures reliability across 15-year industrial service life. |
| Automotive Sensor Signal Conditioning | Telecom DC Power Feeds |
|
Use Scenario: Shielding LIN bus transceivers and pressure sensor outputs in engine control units from ESD and ISO 7637-2 pulse 1/2a transients. IC Role / Device Role / Timing Role: Localized TVS mounted directly at connector interface, providing <1 ns response to ±8 kV contact ESD per IEC 61000-4-2. Use Value: Low leakage (<1.0 μA) avoids loading 10 kΩ sensor pull-ups; cathode-band polarity prevents misplacement during automated assembly. |
Use Scenario: Protecting -48 V DC feeding circuits in base station power supplies against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary-stage unidirectional TVS on input rectifier output, absorbing 1500 W pulses without thermal runaway. Use Value: RθJA = 75 °C/W allows sustained 6.5 W dissipation on standard PCB layout; UL 94 V-0 molding compound meets telecom fire safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30AHE3/A | Lower PPPM = 400 W; same VWM/VBR; SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not suitable for IEC 61000-4-5 Level 4; limited to low-energy ESD and switching noise in space-constrained consumer designs. | Select SMAJ30AHE3/A only if surge threat level is ≤200 W and board area is constrained; not drop-in for SM15T30AHE3/57T. |
| 1.5KE30A-E3/54 | Through-hole DO-201 package; PPPM = 1500 W; identical VWM/VBR/VC; no AEC-Q101 qualification | Lacks automotive qualification and SMT compatibility; requires wave-solder infrastructure and larger PCB real estate. | Choose 1.5KE30A-E3/54 only for legacy through-hole production or prototyping where AEC-Q101 is not mandated. |
Compared with SMAJ30AHE3/A and 1.5KE30A-E3/54, SM15T30AHE3/57T uniquely delivers AEC-Q101 qualification, SMC surface-mount compatibility, and validated 1500 W clamping in automotive-qualified supply chain - making it the sole option for new SMT-based automotive power designs requiring full IEC 61000-4-5 compliance.
Availability
SM15T30AHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, and telecom DC power feed applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SM15T30AHE3/57T 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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SM15T Series was developed specifically for high-energy transient suppression in automotive and industrial environments, combining AEC-Q101 validation, robust SMC packaging, and tightly controlled clamping parameters to replace older 1.5KE and P6KE families in next-generation ECUs and power modules.
FAQ
What is the clamping voltage of SM15T30AHE3/57T at its rated peak pulse current?
The SM15T30AHE3/57T has a maximum clamping voltage (VC) of 41.5 V when subjected to its rated peak pulse current (IPPM) of 36 A using the standardized 10/1000 μs waveform. This value is measured under specified test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T30AHE3/57T maintains this clamping performance across its operational temperature range.
Is SM15T30AHE3/57T qualified for automotive applications?
Yes, SM15T30AHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. It undergoes stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing to meet automotive reliability requirements. The SM15T30AHE3/57T is approved for use in engine control, body electronics, and ADAS subsystems.
What does the "HE3/57T" suffix indicate in SM15T30AHE3/57T?
The "HE3" suffix identifies the SM15T30AHE3/57T as RoHS-compliant and AEC-Q101 qualified, while "57T" specifies the preferred packaging: 7-inch diameter plastic tape and reel containing 850 units. This packaging format supports automated SMT placement and aligns with industry-standard reel dimensions and orientation requirements. The SM15T30AHE3/57T is supplied with matte tin-plated leads compliant with J-STD-002 solderability standards.
How does SM15T30AHE3/57T differ from commercial-grade SM15T30A-E3/57T?
The SM15T30AHE3/57T differs from SM15T30A-E3/57T primarily in qualification and traceability: SM15T30AHE3/57T is AEC-Q101 qualified with additional screening (HTOL, TC, UHAST), whereas SM15T30A-E3/57T is commercial-grade only. Both share identical electrical specs (VWM, VBR, VC, PPPM) and SMC package, but SM15T30AHE3/57T includes automotive-specific lot traceability and extended reliability documentation required for Tier 1 automotive procurement.
What is the thermal resistance of SM15T30AHE3/57T, and how does it affect PCB layout?
The SM15T30AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad size increases RθJA and risks thermal overload during repetitive surges. For reliable operation, the SM15T30AHE3/57T must be placed on adequately sized copper areas to sustain its 6.5 W steady-state power dissipation.
SM15T30AHE3/57T 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
SM15T30AHE3/57T FAQ
1.How can I place an order for SM15T30AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T30AHE3/57T 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 SM15T30AHE3/57T reliable?
The price and inventory of SM15T30AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T30AHE3/57T is usually 5 days.
3.What payment methods are accepted for SM15T30AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T30AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T30AHE3/57T?
SM15T30AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T30AHE3/57T 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 SM15T30AHE3/57T?
For technical support, including SM15T30AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T30AHE3/57T requirements.
6.How does Aetrix verify that SM15T30AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T30AHE3/57T 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 SM15T30AHE3/57T meets industry standards.
7.What is the process for return or replacement of SM15T30AHE3/57T?
All SM15T30AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T30AHE3/57T, 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 SM15T30AHE3/57T part is unused and in its original packaging.
Return procedure for SM15T30AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T30AHE3/57T Tags
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