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Vishay General Semiconductor - Diodes Division SM15T6V8A-M3/9AT
- Part No.:
- SM15T6V8A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8A-M3/9AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
SM15T6V8A-M3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on DC power rails and signal lines. It features 6.45 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage at 143 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 μs). It is widely used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SM15T6V8A-M3/9AT datasheet, SM15T6V8A-M3/9AT pinout, SM15T6V8A-M3/9AT application, or SM15T6V8A-M3/9AT equivalent, key selection criteria include clamping voltage under 10.5 V at 143 A, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a fast-acting voltage-clamping device triggered by transient overvoltage events exceeding its reverse stand-off voltage of 5.8 V. Its silicon avalanche junction delivers sub-nanosecond response time and low dynamic impedance to limit induced surges before downstream components are damaged.
The device sustains 1500 W peak pulse power per 10/1000 μs waveform with thermal resistance RθJA = 75 °C/W and maximum junction temperature of 150 °C. Its glass-passivated chip junction ensures stable leakage performance (<1000 μA at VWM) and robust reliability under repeated surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 5.8 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 6.45–7.14 V at 10 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 10.5 V at 143 A (10/1000 μs) - Actual voltage seen by protected circuit during worst-case surge; critical for IC survival |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for lightning-induced or inductive-switching transients per standard waveform |
| IPPM (Peak Pulse Current) | 143 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 0.320" x 0.246" footprint; compatible with automated placement and reflow |
Pinout & Package
SM15T6V8A-M3/9AT uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, 0.320" × 0.246" body, cathode band marking on one end. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or return path; completes clamping loop when cathode is tied to protected line |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 5 V rail); conducts avalanche current to anode during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 (4 kV) surges on 5 V supply rails without derating |
| 10.5 V clamping at 143 A | Keeps protected 5 V logic circuits below absolute maximum ratings during 1.2/50 μs surge injection |
| Glass-passivated junction | Ensures <1000 μA reverse leakage at 5.8 V and stable VBR over temperature and lifetime |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and automotive OEM environmental mandates |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without moisture sensitivity concerns or baking preconditioning |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller I/O pins connected to external switches and sensors exposed to load-dump and inductive kickback in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU pin and chassis ground to clamp transients before they exceed 6 V absolute maximum rating. Use Value: Prevents latch-up or gate oxide damage in automotive-grade MCUs by limiting voltage to ≤10.5 V during 100 A surge events. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers interfacing with solenoids and relay coils in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS on input front-end to absorb switching spikes before signal conditioning circuitry. Use Value: Eliminates need for external RC snubbers by providing sub-100 ns response and 1500 W energy absorption per channel. |
| Consumer Appliance Motor Drive Board | Telecom PoE Data Line Protection |
Use Scenario: Shielding gate drivers and bootstrap circuits on BLDC motor inverters from commutation-induced voltage spikes. IC Role / Device Role / Timing Role: Localized TVS on low-side FET source node to clamp shoot-through transients during PWM transitions. Use Value: Maintains MOSFET VGS integrity by clamping spikes to <11 V, preventing unintended turn-on and thermal runaway. |
Use Scenario: Protecting Ethernet PHY interface pins in Power over Ethernet (PoE) powered devices against cable discharge events and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS on MDI pairs referenced to local ground plane to shunt common-mode surges. Use Value: Achieves IEC 61000-4-2 Level 4 (15 kV air, 8 kV contact) compliance without degrading 100BASE-TX signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A-E3/57T | Lower PPPM (400 W), higher VC (10.5 V @ 32.4 A), SMA package (smaller thermal mass) | Not suitable for 1500 W lightning surge; limited to low-energy ESD and switching noise | Select only for space-constrained consumer designs where peak surge current stays below 35 A |
| SMCJ6.0A-M3/9AT | Same SMC package, identical VWM/VBR, but 3000 W PPPM and 10.5 V VC @ 286 A | Over-specified for 1500 W threat levels; higher cost and larger board footprint | Choose when future-proofing against upgraded IEC 61000-4-5 Level 5 testing or dual-stage protection architectures |
Compared with SMAJ6.0A-E3/57T, SM15T6V8A-M3/9AT delivers 3.75× higher surge energy handling and validated performance at automotive-grade current levels; versus SMCJ6.0A-M3/9AT, it offers optimal cost-performance balance for 1500 W-class protection without over-engineering.
Availability
SM15T6V8A-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom infrastructure requiring stable component supply with halogen-free compliance and MSL Level 1 reflow capability.
Supply support for SM15T6V8A-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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The SM15T Series was engineered specifically for high-power transient suppression in harsh environments, targeting AEC-Q101 readiness and compatibility with 10/1000 μs lightning surge standards across automotive, industrial, and telecom segments.
FAQ
What is the clamping voltage of SM15T6V8A-M3/9AT at its rated peak pulse current?
The SM15T6V8A-M3/9AT has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 143 A under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SM15T6V8A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SM15T6V8A-M3/9AT suitable for automotive applications?
Yes, SM15T6V8A-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), with thermal and surge performance aligned to automotive requirements. While the base SM15T6V8A-M3/9AT is commercial-grade, its AEC-Q101 qualified variant SM15T6V8AHM3_A/I is available for automotive use. The SM15T6V8A-M3/9AT shares identical electrical characteristics and package dimensions, making it suitable for pre-qualification prototyping and non-safety-critical automotive subsystems.
How does the M3 suffix affect the specifications of SM15T6V8A-M3/9AT?
"M3" denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and matte tin-plated leads solderable per J-STD-002. It does not alter electrical parameters-VWM, VBR, VC, and PPPM remain identical to E3-suffix variants. The SM15T6V8A-M3/9AT meets IPC-1752A material declarations and is preferred for automotive and green-electronics programs requiring halogen-free bill-of-materials compliance.
What is the recommended PCB pad layout for SM15T6V8A-M3/9AT?
Vishay specifies mounting SM15T6V8A-M3/9AT on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and thermal resistance of 75 °C/W. Pad geometry must follow DO-214AB outline: 0.305"–0.320" length, 0.220"–0.246" width, with 0.079"–0.103" lead span. Use thermal relief for manual rework; avoid solder mask defined pads to ensure full copper exposure for heat dissipation. The SM15T6V8A-M3/9AT thermal performance is validated only with this layout.
Does SM15T6V8A-M3/9AT have bidirectional capability?
No, SM15T6V8A-M3/9AT is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SM15T6V8CA). The SM15T6V8A-M3/9AT conducts avalanche current only when cathode voltage exceeds anode by ≥6.45 V; it blocks reverse current up to −5.8 V. Using it in AC or bipolar signal paths would result in improper clamping or forward conduction failure.
SM15T6V8A-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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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)
SM15T6V8A-M3/9AT FAQ
1.How can I place an order for SM15T6V8A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8A-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 SM15T6V8A-M3/9AT reliable?
The price and inventory of SM15T6V8A-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 SM15T6V8A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T6V8A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8A-M3/9AT?
SM15T6V8A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8A-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 SM15T6V8A-M3/9AT?
For technical support, including SM15T6V8A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8A-M3/9AT requirements.
6.How does Aetrix verify that SM15T6V8A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T6V8A-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 SM15T6V8A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T6V8A-M3/9AT?
All SM15T6V8A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8A-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 SM15T6V8A-M3/9AT part is unused and in its original packaging.
Return procedure for SM15T6V8A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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