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Vishay General Semiconductor - Diodes Division SM15T30AHE3_A/H
- Part No.:
- SM15T30AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T30AHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
SM15T30AHE3_A/H 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), 30 V standoff voltage (VWM = 25.6 V), 41.5 V clamping voltage at 36 A IPPM, and AEC-Q101 qualified for automotive applications. It protects MOSFETs and sensor signal lines against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T30AHE3_A/H datasheet, SM15T30AHE3_A/H pinout, SM15T30AHE3_A/H application, or SM15T30AHE3_A/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, and SMC package thermal resistance (RθJA = 75 °C/W).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds 25.6 V (VWM), it avalanches at 28.5–31.5 V (VBR), limiting transient voltage to ≤41.5 V at 36 A peak pulse current. Its glass-passivated junction ensures stable breakdown and low leakage (≤1.0 μA at VWM).
Designed for high-energy threat suppression, the device sustains 1500 W peak pulse power per 10/1000 μs waveform with derating above 25 °C, and handles 200 A non-repetitive forward surge (10 ms half-sine). Junction temperature range spans −65 °C to +150 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 28.5 V / 31.5 V - Breakdown voltage range at 1.0 mA test current; defines avalanche onset tolerance |
| VC @ IPPM | 41.5 V at 36.0 A - Clamping voltage during 10/1000 μs surge; determines protected circuit's max overvoltage stress |
| PPPM | 1500 W - Peak pulse power handling capability; validates suitability for lightning and motor-switching transients |
| TJ max | +150 °C - Maximum junction temperature; enables operation in engine control units and powertrain modules |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient on standard 8.0 mm × 8.0 mm copper pads; informs PCB thermal layout |
| AEC-Q101 | Qualified - Confirms reliability for automotive electronics per stress-test requirements (HTOL, TC, HTRB) |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by molded band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or lower-potential rail; completes shunt path during reverse transient |
| Cathode | Reverse-biased avalanche terminal | Connected to protected line (e.g., CAN_H, sensor supply); initiates clamping when voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating on standard PCB pads |
| Glass passivated chip junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of parametric drift in automotive under-hood use |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), critical for protecting high-speed interfaces |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without popcorn or delamination failure modes |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive powertrain, body control, and ADAS modules per JEDEC stress test standards |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and ground, clamping surges within 1 ns. Use Value: Limits voltage to ≤41.5 V during 36 A transients, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Line-side TVS on 4–20 mA or 0–10 V signal paths, absorbing field-induced surges. Use Value: Maintains signal integrity by clamping transients before they reach precision ADC inputs, avoiding offset errors. |
| Automotive CAN Bus Node Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding CAN_H/CAN_L nodes in body electronics against ESD and coupled noise from adjacent harnesses. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to chassis ground. Use Value: Withstands ±30 kV contact ESD (IEC 61000-4-2) and maintains <1 pF junction capacitance to avoid signal distortion. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback during PWM switching. Use Value: Absorbs 1500 W pulses without degradation, extending MOSFET lifespan and eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Lower PPPM (400 W), same VWM (25.6 V), SMC package, commercial grade only | Limited to consumer-grade I/O protection; not AEC-Q101 qualified or rated for automotive load dump | Select when cost sensitivity outweighs surge energy requirements and automotive qualification is unnecessary |
| SMCJ30A-QH | Same PPPM (1500 W), identical VWM/VBR/VC specs, AEC-Q101 qualified, but HE3 suffix denotes Vishay's specific automotive traceability | Functionally interchangeable but differs in material compliance (halogen-free HM3 vs. HE3) and ordering code structure | Choose SMCJ30A-QH only if halogen-free requirement applies; otherwise SM15T30AHE3_A/H offers full Vishay automotive traceability |
Compared with SMAJ30A-E3/57T and SMCJ30A-QH, SM15T30AHE3_A/H delivers identical clamping performance and AEC-Q101 qualification while using Vishay's standardized HE3 automotive suffix for consistent BOM management and supply chain traceability.
Availability
SM15T30AHE3_A/H is available at Aetrix Electronics and suitable for automotive powertrain modules, industrial sensor interfaces, and consumer appliance motor drives requiring stable component supply with automotive-grade reliability and surge immunity.
Supply support for SM15T30AHE3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The SM15T Series was developed specifically for high-energy transient suppression in automotive and industrial systems where 1500 W surge handling, AEC-Q101 qualification, and stable clamping under temperature variation are mandatory.
FAQ
What is the clamping voltage of SM15T30AHE3_A/H at its rated peak pulse current?
The SM15T30AHE3_A/H has a maximum clamping voltage (VC) of 41.5 V at 36.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.31" × 0.31" copper pads and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The SM15T30AHE3_A/H maintains this clamping performance across its operating temperature range.
Is SM15T30AHE3_A/H suitable for bidirectional transient protection?
No, SM15T30AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SM15T30CA). Using SM15T30AHE3_A/H on AC-coupled or symmetrical signal lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit. Always verify polarity alignment before placement.
Does SM15T30AHE3_A/H meet automotive qualification standards?
Yes, SM15T30AHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated temperature-humidity stress testing (HAST), validating its suitability for automotive powertrain, body control, and infotainment modules.
What is the thermal resistance of SM15T30AHE3_A/H, and how does it affect PCB layout?
The SM15T30AHE3_A/H 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. To maintain safe junction temperatures under sustained power dissipation, designers must allocate adequate copper area and consider airflow or heatsinking. Reducing pad size increases RθJA, risking thermal runaway during repetitive surges.
How does the glass passivation in SM15T30AHE3_A/H improve long-term reliability?
Glass passivation of the SM15T30AHE3_A/H chip junction prevents moisture ingress and electrochemical migration, ensuring stable breakdown voltage (VBR) and low leakage current (<1.0 μA at VWM) over 15+ years of operation. This is critical in automotive and industrial environments where thermal cycling and humidity exposure could degrade non-passivated silicon junctions, leading to premature failure or parametric shift.
SM15T30AHE3_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):
- 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/H FAQ
1.How can I place an order for SM15T30AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T30AHE3_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 SM15T30AHE3_A/H reliable?
The price and inventory of SM15T30AHE3_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 SM15T30AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T30AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T30AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T30AHE3_A/H?
SM15T30AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T30AHE3_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 SM15T30AHE3_A/H?
For technical support, including SM15T30AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T30AHE3_A/H requirements.
6.How does Aetrix verify that SM15T30AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T30AHE3_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 SM15T30AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T30AHE3_A/H?
All SM15T30AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T30AHE3_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 SM15T30AHE3_A/H part is unused and in its original packaging.
Return procedure for SM15T30AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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