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Vishay General Semiconductor - Diodes Division SM15T30AHE3_A/I
- Part No.:
- SM15T30AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T30AHE3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
SM15T30AHE3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMC (DO-214AB) package, featuring 30 V standoff voltage (VWM), 31.5 V maximum breakdown voltage (VBR), and 41.5 V clamping voltage (VC) at 36 A peak pulse current (IPPM), designed for automotive-grade overvoltage protection of power rails and signal lines.
For engineers reviewing the SM15T30AHE3_A/I datasheet, SM15T30AHE3_A/I pinout, SM15T30AHE3_A/I application, or SM15T30AHE3_A/I equivalent, this AEC-Q101 qualified TVS diode delivers verified clamping performance under 10/1000 μs lightning surge waveforms, low-inductance SMC packaging for high-speed transient response, and robust 200 A IFSM surge capability for motor drive and power supply protection.
Technical Context
The SM15T30AHE3_A/I operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology to achieve stable breakdown and low leakage (<1.0 μA at 25.6 V). Its thermal resistance (RθJA = 75 °C/W) and 150 °C max junction temperature support operation in automotive under-hood environments.
It is rated for 1500 W peak pulse power (10/1000 μs), with clamping validated at 41.5 V into 36 A - enabling reliable suppression of induced transients from inductive switching and ESD events without overstressing downstream MOSFETs or ICs. The device meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 41.5 V at IPPM = 36 A (10/1000 μs) - Actual voltage seen by protected circuit during worst-case surge; limits stress on 3.3 V/5 V/12 V systems. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability under standardized lightning-surge waveform; enables use in I/O and DC bus protection. |
| IFSM (Surge Current) | 200 A - Single half-sine 10 ms forward surge rating; supports protection against coil-switching transients in automotive actuators. |
| TJ max | 150 °C - Maximum junction temperature; allows deployment in engine control units and power inverters without derating at ambient ≤125 °C. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
SM15T30AHE3_A/I is a two-terminal unidirectional TVS diode in SMC (DO-214AB) package. The cathode is marked by a band on the body; anode is unmarked. Terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when voltage exceeds VBR. |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics; supports PPAP and long-term reliability requirements. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates risk of moisture-induced parameter drift in humid environments. |
| Low-inductance SMC package | Minimizes voltage overshoot during fast transients (e.g., ESD, relay bounce); critical for protecting high-speed logic and gate drivers. |
| MSL Level 1 rating | Enables standard reflow assembly without pre-baking; reduces manufacturing complexity and cost in high-volume production. |
| RoHS-compliant & halogen-free option | Base P/NHE3 denotes RoHS compliance; HM3 suffix available for halogen-free variants - meets global environmental regulations. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 24 V battery-supplied ECUs from load-dump and alternator surge transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 30 V. Use Value: Limits peak voltage to 41.5 V during 36 A transients, preventing damage to 36 V-rated CAN transceivers and microcontrollers. |
Use Scenario: Safeguarding PLC digital input modules connected to 24 V industrial sensors subject to inductive kickback. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor input line to absorb 10/1000 μs switching spikes from solenoid valves. Use Value: Clamps transients within 1 ns response time, preserving signal integrity and avoiding false triggering of optocoupled inputs. |
| Telecom DC Power Feeding | Consumer Appliance Power Supply Input |
Use Scenario: Protecting PoE-powered equipment front-end rectifiers from lightning-induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary surge suppressor on DC input side of isolated DC/DC converter. Use Value: Absorbs up to 1500 W surge energy while maintaining <1.0 μA leakage at 25.6 V, minimizing standby power loss. |
Use Scenario: Shielding AC-DC adapter primary-side rectifier output from mains-borne transients in white goods. IC Role / Device Role / Timing Role: Secondary-side TVS across bulk capacitor to prevent overvoltage failure during brownout recovery. Use Value: Withstands 200 A 10 ms forward surge, enabling robust protection against compressor restart transients in refrigerators and HVAC units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Same 30 V VWM, but lower PPPM (400 W) and higher VC (48.4 V at 8.3 A); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy threats (e.g., ESD only); unsuitable for lightning-level surges or high-current inductive switching. | Select SMAJ30A-E3/57T only for space-constrained consumer designs where 1500 W rating is unnecessary. |
| 1.5KE30A | Through-hole DO-201 package; same VWM/VBR/VC specs but higher RθJA (100 °C/W) and no AEC-Q101 qualification. | Not suitable for automated SMT lines or automotive under-hood environments; requires manual assembly and thermal derating. | Choose 1.5KE30A only for legacy through-hole prototyping or non-automotive industrial repairs where SMT compatibility is not required. |
Compared with SMAJ30A-E3/57T and 1.5KE30A, SM15T30AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity in SMC package, and automotive-grade reliability - making it the only option qualified for volume production in automotive power distribution modules.
Availability
SM15T30AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power feeding systems requiring stable component supply with full traceability and lifecycle management.
Supply support for SM15T30AHE3_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, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SM15T30AHE3_A/I at its rated peak pulse current?
The SM15T30AHE3_A/I has a maximum clamping voltage (VC) of 41.5 V when subjected to a 10/1000 μs waveform at its peak pulse current of 36 A. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuits during surge events. The SM15T30AHE3_A/I maintains this clamping performance across its specified operating temperature range.
Is SM15T30AHE3_A/I suitable for automotive applications?
Yes, SM15T30AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix, indicating RoHS-compliant construction with automotive-grade reliability testing. It is deployed in engine control units, body control modules, and ADAS power supplies where sustained surge immunity and thermal stability up to 150 °C are required. The SM15T30AHE3_A/I meets all stress-test requirements defined in the AEC-Q101 standard.
What does the "_A/I" suffix mean in SM15T30AHE3_A/I?
The "_A/I" suffix in SM15T30AHE3_A/I indicates the packaging configuration: "A" denotes the base device variant (unidirectional, 30 V VWM), and "I" specifies 13-inch diameter plastic tape and reel delivery containing 3500 units. This format supports high-volume SMT assembly lines. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, distinguishing it from commercial-grade E3 or M3 variants.
How does SM15T30AHE3_A/I differ from bidirectional TVS diodes like SM15T30CA?
SM15T30AHE3_A/I is unidirectional with cathode-band polarity and blocks reverse voltage up to 25.6 V, while SM15T30CA is bidirectional and symmetrical - conducting in both directions above ±30 V. The SM15T30AHE3_A/I is used where polarity is known and DC bias exists (e.g., 24 V power rails), offering tighter leakage control and simpler grounding. Bidirectional types require no polarity awareness but exhibit higher leakage at low reverse bias.
What is the thermal resistance of SM15T30AHE3_A/I, and how does it affect layout design?
The SM15T30AHE3_A/I 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 area increases RθJA and risks exceeding 150 °C junction temperature under sustained 6.5 W power dissipation. Layout must allocate adequate copper area and avoid thermal isolation to maintain reliability.
SM15T30AHE3_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):
- 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_A/I FAQ
1.How can I place an order for SM15T30AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T30AHE3_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 SM15T30AHE3_A/I reliable?
The price and inventory of SM15T30AHE3_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 SM15T30AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM15T30AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T30AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T30AHE3_A/I?
SM15T30AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T30AHE3_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 SM15T30AHE3_A/I?
For technical support, including SM15T30AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T30AHE3_A/I requirements.
6.How does Aetrix verify that SM15T30AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T30AHE3_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 SM15T30AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM15T30AHE3_A/I?
All SM15T30AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T30AHE3_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 SM15T30AHE3_A/I part is unused and in its original packaging.
Return procedure for SM15T30AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T30AHE3_A/I Tags
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