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Vishay General Semiconductor - Diodes Division SM15T7V5A-M3/9AT
- Part No.:
- SM15T7V5A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T7V5A-M3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,993
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Product details
Overview
SM15T7V5A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, featuring 7.13 V minimum breakdown voltage (VBR), 6.40 V stand-off voltage (VWM), 11.3 V maximum clamping voltage (VC) at 132 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - designed for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial control systems.
For engineers reviewing the SM15T7V5A-M3/9AT datasheet, SM15T7V5A-M3/9AT pinout, SM15T7V5A-M3/9AT application, or SM15T7V5A-M3/9AT equivalent, key selection criteria include verified clamping performance under 132 A IPPM, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped overvoltage protection device, triggered when reverse voltage exceeds 7.13 V (min VBR) and clamping to ≤11.3 V at 132 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low leakage (<500 μA at 6.40 V).
Designed for high-energy transient suppression, it delivers 1500 W peak pulse power with thermal resistance RθJA = 75 °C/W and supports operating junction temperatures up to +150 °C. Failure mode under overstress is short-circuit, per IEC 61000-4-5 compliance context.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.40 V - Maximum continuous reverse voltage before leakage exceeds 500 μA; sets safe operating margin below breakdown. |
| VBR (min) | 7.13 V - Minimum breakdown voltage at 10 mA test current; defines reliable turn-on threshold for transient clamping. |
| VC @ IPPM | 11.3 V - Clamped voltage at 132 A peak pulse current; determines protected circuit's maximum stress during surge. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; qualifies for lightning-induced and motor-switching transient protection. |
| IPPM | 132 A - Peak pulse current capability; enables robust protection of 12 V automotive and industrial bus interfaces. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood and enclosed industrial environments. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference in unidirectional TVS configuration. | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot. |
| Cathode | Protected line connection point; reverse-biased during normal operation; conducts during overvoltage events. | Connected directly to sensitive node (e.g., MCU I/O, sensor output); band-marked end identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe transients including ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surges without derating. |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes voltage overshoot across protected ICs, preserving margin for 5 V logic and automotive microcontrollers. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5% typical), low leakage (<500 μA), and long-term reliability under thermal cycling. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow soldering without moisture sensitivity concerns; eliminates pre-bake requirement for production. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping surges within 10 ns. Use Value: Limits voltage to ≤11.3 V during 132 A pulses, preventing damage to downstream PMICs and microcontrollers rated for 16 V absolute max. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to relay coil switching noise. IC Role / Device Role / Timing Role: TVS mounted at sensor connector, shunting fast-rising inductive kickback before it reaches ADC front-end. Use Value: Clamps 10/1000 μs transients to 11.3 V while maintaining <500 μA leakage at 6.4 V, avoiding signal offset in mV-level sensor outputs. |
| Consumer Device USB Port Protection | Telecom Base Station Control Line Protection |
Use Scenario: Adding secondary overvoltage protection on VBUS line of USB-C ports in smart home hubs subjected to ESD and cable coupling events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switch, activated only during >7.13 V excursions. Use Value: Provides 1500 W surge capacity beyond standard ESD diodes, covering conducted surges that exceed IEC 61000-4-2 immunity limits. |
Use Scenario: Protecting RS-485 control lines in outdoor telecom cabinets from lightning-induced surges entering via long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS installed at line driver/receiver interface, referenced to local ground plane. Use Value: Delivers 132 A peak current handling with 11.3 V clamping, ensuring receiver ICs (e.g., MAX1487) remain within 12 V abs-max rating during 1 kV/1 kΩ surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57T | Lower PPPM (400 W), same VWM/VBR range, SMA package (smaller footprint, higher RθJA = 110 °C/W). | Not suitable for 1500 W threats like load dump; limited to lower-energy ESD and switching noise. | Select only if surge energy is ≤400 W and board space is constrained; verify thermal rise under repeated pulses. |
| SMCJ7.5A-M3/9AT | Same SMC package, identical 1500 W rating and 7.13–7.88 V VBR, but M3/9AT packaging matches SM15T7V5A-M3/9AT exactly. | No functional difference; SMCJ7.5A-M3/9AT is a direct form-fit-function alternative with identical qualification and marking. | Valid drop-in replacement with identical electrical, thermal, and mechanical specs; suitable for BOM flexibility and dual-sourcing. |
Compared with SMAJ7.5A-E3/57T, SM15T7V5A-M3/9AT provides 275 % higher surge power handling and lower thermal resistance, enabling robust protection in automotive and industrial settings; versus SMCJ7.5A-M3/9AT, it offers identical performance but may differ in minor process-level qualifications or lot traceability.
Availability
SM15T7V5A-M3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom control line surge suppression requiring stable component supply, full traceability, and halogen-free compliance.
Supply support for SM15T7V5A-M3/9AT 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-grade qualification.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101-compliant automotive subsystems and industrial equipment where 1500 W surge immunity and stable clamping are mandatory.
FAQ
What is the clamping voltage of SM15T7V5A-M3/9AT at its rated peak pulse current?
The SM15T7V5A-M3/9AT has a maximum clamping voltage (VC) of 11.3 V when subjected to its rated peak pulse current of 132 A using the standardized 10/1000 μs waveform. This value is measured under specified test conditions per Vishay Document 88380 and ensures predictable voltage limiting during surge events. The SM15T7V5A-M3/9AT maintains this clamping performance across its qualified operating temperature range.
Is SM15T7V5A-M3/9AT suitable for automotive applications?
Yes, SM15T7V5A-M3/9AT is halogen-free, RoHS-compliant, and built on Vishay's AEC-Q101-qualified platform (with appropriate HE3/HM3 suffix variants). While the M3/9AT variant itself is commercial-grade, its electrical specs - including 1500 W peak pulse power, 132 A IPPM, and +150 °C TJ max - meet core requirements for under-hood and body electronics. For certified automotive use, specify SM15T7V5AHM3_A/I.
What does the "M3" suffix indicate in SM15T7V5A-M3/9AT?
The "M3" suffix in SM15T7V5A-M3/9AT denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and matte tin-plated leads. It distinguishes the part from "E3" (RoHS-compliant but not halogen-free) and "HM3" (AEC-Q101 qualified + halogen-free). The "9AT" indicates 13-inch tape-and-reel packaging with 3500 units per reel.
How is polarity identified on SM15T7V5A-M3/9AT?
SM15T7V5A-M3/9AT is a unidirectional TVS diode, and polarity is marked by a cathode band printed on the SMC (DO-214AB) package body. The banded end corresponds to the cathode terminal, which connects to the protected line; the opposite end is the anode, typically tied to ground. This marking is visible under standard optical inspection and compatible with automated optical recognition (AOI) systems.
What is the thermal resistance of SM15T7V5A-M3/9AT, and how does it affect layout?
The SM15T7V5A-M3/9AT 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 repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. Reducing pad size or adding thermal vias improves heat dissipation, especially in high-ambient environments.
SM15T7V5A-M3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T7V5A-M3/9AT FAQ
1.How can I place an order for SM15T7V5A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T7V5A-M3/9AT 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 SM15T7V5A-M3/9AT reliable?
The price and inventory of SM15T7V5A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T7V5A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T7V5A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T7V5A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T7V5A-M3/9AT?
SM15T7V5A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T7V5A-M3/9AT 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 SM15T7V5A-M3/9AT?
For technical support, including SM15T7V5A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T7V5A-M3/9AT requirements.
6.How does Aetrix verify that SM15T7V5A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T7V5A-M3/9AT 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 SM15T7V5A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T7V5A-M3/9AT?
All SM15T7V5A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T7V5A-M3/9AT, 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 SM15T7V5A-M3/9AT part is unused and in its original packaging.
Return procedure for SM15T7V5A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T7V5A-M3/9AT Tags
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