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Vishay General Semiconductor - Diodes Division SM15T7V5AHE3/9AT
- Part No.:
- SM15T7V5AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T7V5AHE3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SM15T7V5AHE3/9AT from Vishay General Semiconductor is a unidirectional 1500 W Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, with 7.13 V minimum breakdown voltage (VBR), 6.40 V stand-off voltage (VWM), and 11.3 V maximum clamping voltage (VC) at 132 A peak pulse current (IPPM). It protects MOSFETs, ICs, and sensor signal lines against lightning-induced and switching transients in automotive and industrial power supplies.
For engineers reviewing the SM15T7V5AHE3/9AT datasheet, SM15T7V5AHE3/9AT pinout, SM15T7V5AHE3/9AT application, or SM15T7V5AHE3/9AT equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This unidirectional TVS diode operates with a glass-passivated junction and exhibits low inductance for fast transient response. Its clamping behavior is defined by a 10/1000 μs waveform, with VC = 11.3 V at IPPM = 132 A and VBR tested at 10 mA IT, ensuring predictable overvoltage protection during high-energy surges.
The device is rated for TJ = –65 °C to +150 °C and features MSL Level 1 moisture sensitivity with 260 °C reflow peak. Its failure mode under overstress is a short circuit, and it meets UL 94 V-0 flammability requirements via SMC molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.40 V - Maximum reverse working voltage before leakage exceeds 500 μA; sets upper limit for continuous system bias without conduction. |
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM while avoiding false triggering. |
| VC @ IPPM | 11.3 V at 132 A (10/1000 μs) - Clamping voltage defines worst-case overvoltage seen by protected downstream components. |
| PPPM | 1500 W - Peak pulse power rating determines survivability against lightning or inductive-switching transients per IEC 61000-4-5. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance governs derating above 25 °C ambient; requires ≥8 mm × 8 mm copper pads for full rating. |
| TJ max | +150 °C - Maximum junction temperature enables operation in under-hood automotive environments and industrial enclosures. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in typical TVS placement. | Provides return path for surge current; must be routed with low-inductance trace to minimize VL = L·di/dt overshoot. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 5 V rail, CAN_H, sensor output). | Clamps voltage relative to anode; band-marked end must align with schematic cathode symbol to ensure correct polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control, ADAS, and body electronics. |
| 1500 W peak pulse power | Withstands 10/1000 μs transients up to 132 A, meeting IEC 61000-4-5 Level 4 (4 kV) when properly mounted on 8 mm × 8 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes overvoltage stress on protected ICs-e.g., clamps 5 V logic lines to ≤11.3 V during surge, preserving margin below absolute max ratings. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without baking; eliminates moisture-related popcorning risk in automated SMT assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to shunt surge energy away from DC-DC converters and microcontrollers. Use Value: Clamps transients to ≤11.3 V at 132 A, maintaining safe operating area for 16 V-rated input stages and enabling compliance with ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS installed across sensor output and ground to suppress ESD and inductive kickback from nearby solenoid drivers. Use Value: Limits voltage excursion to 11.3 V during 1 kV ESD events, preventing latch-up or parametric shift in 3.3 V ADC front-ends. |
| Consumer USB Port Surge Protection | Telecom Line Interface Protection |
Use Scenario: Adding secondary surge immunity to USB VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switch to absorb hot-plug and cable discharge events. Use Value: Withstands 1500 W pulses without degradation, extending lifespan beyond basic 15 kV HBM ESD protection and supporting USB-IF compliance testing. |
Use Scenario: Protecting RS-485 transceiver I/O pins in base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on differential pair (A/B) referenced to local ground plane to clamp common-mode transients. Use Value: Delivers 11.3 V clamping at 132 A, reducing stress on ±12 V transceiver rails and enabling robust operation in outdoor telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57T | Lower PPPM (400 W), higher VC (12.0 V at 32.4 A), SMA package (smaller thermal mass). | Not AEC-Q101 qualified; limited to commercial-grade consumer or office equipment. | Select when cost and board space are critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
| SMCJ7.5AHE3/9AT | Same SMC package, identical VWM/VBR/VC, but rated for 1500 W with tighter VBR tolerance (±5 % vs. ±5.5 % for SM15T7V5AHE3/9AT). | Also AEC-Q101 qualified; functionally interchangeable where tighter breakdown spec is required. | Prefer for new designs requiring tighter VBR consistency or legacy compatibility with SMCJ family layout. |
Compared with SMAJ7.5A-E3/57T and SMCJ7.5AHE3/9AT, SM15T7V5AHE3/9AT offers identical AEC-Q101 qualification and SMC thermal performance but with slightly wider VBR tolerance-making it optimal for cost-sensitive automotive modules where ±5.5 % variation is acceptable.
Availability
SM15T7V5AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom line protection requiring stable component supply with AEC-Q101 assurance and 13" tape-and-reel delivery.
Supply support for SM15T7V5AHE3/9AT 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, power handling, and automotive qualification.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments-targeting automotive power systems, industrial motor drives, and infrastructure equipment where 1500 W surge capability and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SM15T7V5AHE3/9AT at its rated peak pulse current?
The SM15T7V5AHE3/9AT has a maximum clamping voltage (VC) of 11.3 V when subjected to its rated 10/1000 μs peak pulse current of 132 A. This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T7V5AHE3/9AT maintains this clamping performance across its operational temperature range.
Is SM15T7V5AHE3/9AT qualified for automotive applications?
Yes, SM15T7V5AHE3/9AT is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88380 datasheet. It undergoes rigorous stress testing-including temperature cycling, highly accelerated life testing (HALT), and ESD verification-to meet automotive reliability standards. The SM15T7V5AHE3/9AT is approved for use in engine control units, body electronics, and ADAS subsystems where transient immunity and long-term stability are critical.
What does the "HE3" suffix indicate in SM15T7V5AHE3/9AT?
The "HE3" suffix in SM15T7V5AHE3/9AT denotes RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3 versions and halogen-free HM3 variants. The "H" prefix confirms automotive qualification, while "E3" specifies matte tin plating and JESD201 Class 2 whisker resistance. The SM15T7V5AHE3/9AT is intended for automotive and industrial applications requiring certified reliability and environmental compliance.
How does SM15T7V5AHE3/9AT differ from bidirectional TVS diodes like SM15T7V5CAHE3/9AT?
SM15T7V5AHE3/9AT is unidirectional and features polarity-sensitive mounting (cathode band), allowing it to conduct only during reverse-biased overvoltage events-ideal for DC power rail protection. In contrast, SM15T7V5CAHE3/9AT is bidirectional, symmetric in both directions, and used for AC or differential signal lines like RS-485. The SM15T7V5AHE3/9AT cannot substitute for bidirectional types without circuit redesign due to fundamental polarity and conduction behavior differences.
What PCB layout guidance applies to SM15T7V5AHE3/9AT for optimal surge performance?
To achieve rated 1500 W performance, SM15T7V5AHE3/9AT must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Figure 2 of the Vishay 88380 datasheet. Traces to the SM15T7V5AHE3/9AT should be short and wide to minimize inductance, and the ground connection must be low-impedance-ideally a solid internal plane. Thermal vias under pads improve heat dissipation and sustain pulse repetition capability.
SM15T7V5AHE3/9AT 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 132A
- 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)
SM15T7V5AHE3/9AT FAQ
1.How can I place an order for SM15T7V5AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T7V5AHE3/9AT 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 SM15T7V5AHE3/9AT reliable?
The price and inventory of SM15T7V5AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T7V5AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T7V5AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T7V5AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T7V5AHE3/9AT?
SM15T7V5AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T7V5AHE3/9AT 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 SM15T7V5AHE3/9AT?
For technical support, including SM15T7V5AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T7V5AHE3/9AT requirements.
6.How does Aetrix verify that SM15T7V5AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T7V5AHE3/9AT 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 SM15T7V5AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T7V5AHE3/9AT?
All SM15T7V5AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T7V5AHE3/9AT, 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 SM15T7V5AHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T7V5AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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