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Vishay General Semiconductor - Diodes Division SM15T6V8A-M3/57T
- Part No.:
- SM15T6V8A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8A-M3/57T.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,254
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Product details
Overview
SM15T6V8A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, with 6.45 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage (VC) at 143 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 μs waveform-designed for protecting MOSFETs and ICs against lightning-induced and inductive-switching transients in automotive and industrial power rails.
For engineers reviewing the SM15T6V8A-M3/57T datasheet, SM15T6V8A-M3/57T pinout, SM15T6V8A-M3/57T application, or SM15T6V8A-M3/57T equivalent, key selection criteria include verified unidirectional polarity, cathode-band-marked SMC package, 150 °C max junction temperature, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering conduction when transient voltage exceeds VBR (6.45–7.14 V), limiting downstream voltage to ≤10.5 V at 143 A IPPM. Its low-inductance SMC package and glass-passivated junction enable fast response (<1 ns) to ESD and surge events.
Rated for 1500 W peak pulse power under 10/1000 μs waveform and 200 A non-repetitive forward surge current (IFSM), it sustains operation from –65 °C to +150 °C with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W-optimized for PCB-mounted protection without heatsinking under typical pad layout (8.0 mm × 8.0 mm copper).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - defines precise voltage threshold at which clamping initiates under 10 mA test current |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V @ 143 A - clamped voltage during worst-case 10/1000 μs surge, directly limiting stress on protected IC |
| PPPM | 1500 W - peak transient energy absorption capability, enabling robust lightning and motor-switching protection |
| TJ max | +150 °C - allows reliable operation in under-hood automotive and high-ambient industrial environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 0.320" body length and cathode band marking |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), MSL Level 1, JESD201 Class 2 whisker resistance |
Pinout & Package
SM15T6V8A-M3/57T uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, 0.320" (8.13 mm) maximum length, 0.246" (6.22 mm) maximum width, and cathode band marking on one end. Terminals are anode and cathode; polarity is unidirectional, with the banded end denoting cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected circuit's power rail or signal line; conducts surge current to ground during overvoltage |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during transient event |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV) surges on 5 V rails without cascaded staging |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage margin between clamping and protected device's absolute maximum rating |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| AEC-Q101 qualification path (HM3 variant) | Provides documented automotive-grade reliability evidence for safety-critical power rail protection |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller power inputs in engine control units exposed to load-dump and alternator ripple transients. IC Role / Device Role: Unidirectional TVS clamp placed between VCC and GND, triggered by positive-going surges exceeding 5.8 V. Use Value: Limits transient voltage to ≤10.5 V at 143 A, preventing latch-up or gate oxide damage in downstream SMPS controllers and CAN transceivers. | Use Scenario: Safeguarding analog sensor signal lines (e.g., current-sense amplifiers) connected to variable-frequency drives. IC Role / Device Role: Reverse-biased TVS shunting inductive kickback from relay coils and contactor switching noise. Use Value: Clamps fast-rising edges (<1 ns) to sub-11 V levels, preserving ADC accuracy and avoiding false triggers in isolated feedback paths. |
| Consumer USB Port ESD Protection | Telecom DC Power Input Protection |
Use Scenario: Secondary-level surge suppression on 5 V USB VBUS lines in set-top boxes and smart displays. IC Role / Device Role: Stand-off-rated TVS absorbing repetitive ESD (IEC 61000-4-2 ±8 kV) and conducted noise from shared power adapters. Use Value: Maintains <1000 μA leakage at 5.8 V, ensuring no impact on USB suspend current budget while surviving >1000 surges. | Use Scenario: Primary transient guard on –48 V telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role: Cathode-to-rail configuration clamping negative surges induced by lightning coupling into outdoor cabling. Use Value: Withstands 200 A half-sine surge (IFSM), enabling use without series fusing in distributed power architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/52T | Lower PPPM (400 W), same VWM/VBR, SMA package (smaller footprint, higher RθJA) | Not suitable for IEC 61000-4-5 Level 4; limited to board-level ESD and low-energy switching noise | Select when space-constrained and surge threat level is ≤1 kV; verify thermal derating above 75 °C ambient |
| SMCJ6.8A-M3/57T | Same SMC package, identical VWM/VBR, but 3000 W PPPM and higher IPPM (236 A) | Overqualified for 5 V rail protection where 1500 W suffices; adds cost and board area without benefit | Choose only if future-proofing against higher-threat environments (e.g., direct AC mains coupling) or extended lifetime requirements |
Compared with SMAJ6.8A-E3/52T and SMCJ6.8A-M3/57T, SM15T6V8A-M3/57T delivers optimal balance of 1500 W surge capacity, SMC mechanical robustness, and halogen-free compliance-making it the preferred choice for cost-sensitive automotive and industrial 5 V protection where full 3 kW rating is unnecessary.
Availability
SM15T6V8A-M3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive I/O safeguarding, and consumer USB port ESD suppression requiring stable component supply across production lifecycles.
Supply support for SM15T6V8A-M3/57T 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 global manufacturing and testing infrastructure focused on reliability and automotive-grade validation.
The SM15T Series was developed specifically for high-energy transient suppression in harsh-environment applications-emphasizing consistent clamping performance, low thermal resistance, and AEC-Q101 qualification readiness for power electronics protection.
FAQ
What is the clamping voltage of SM15T6V8A-M3/57T at its rated peak pulse current?
The SM15T6V8A-M3/57T has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current of 143 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88380 and ensures predictable overvoltage limiting for 5 V systems. The SM15T6V8A-M3/57T maintains this clamping performance across its specified operating temperature range.
Is SM15T6V8A-M3/57T suitable for automotive applications?
Yes, SM15T6V8A-M3/57T is halogen-free, RoHS-compliant, and designed to meet AEC-Q101 qualification requirements via its HM3 variant (e.g., SM15T6V8AHM3_A/H). While the M3 suffix denotes commercial-grade construction, its thermal rating (TJ max = 150 °C), robust SMC package, and low-inductance design make it widely deployed in automotive power modules, body control units, and infotainment power supplies. The SM15T6V8A-M3/57T supports reflow up to 260 °C per J-STD-020.
How does the M3 suffix differ from E3 in SM15T6V8A-M3/57T?
The M3 suffix in SM15T6V8A-M3/57T indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, whereas E3 denotes standard RoHS compliance without halogen-free assurance. Both share identical electrical specs and SMC packaging, but M3 meets stricter environmental mandates for green electronics manufacturing. The SM15T6V8A-M3/57T is supplied in 7" tape-and-reel (57T) with 850 units per reel.
What is the reverse leakage current of SM15T6V8A-M3/57T at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 5.8 V and TA = 25 °C, the SM15T6V8A-M3/57T exhibits a maximum reverse leakage current (ID) of 1000 μA. This value is confirmed in Table "ELECTRICAL CHARACTERISTICS" of Vishay document 88380 and remains within specification up to 125 °C ambient, supporting low-power system integrity. The SM15T6V8A-M3/57T maintains this leakage performance across its full storage temperature range.
Can SM15T6V8A-M3/57T be used in bidirectional configurations?
No, SM15T6V8A-M3/57T is a unidirectional TVS diode, identified by its cathode band marking and "A" suffix. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SM15T6V8CA). Using SM15T6V8A-M3/57T in reverse-biased AC applications would result in forward conduction and failure. Always match the device polarity to the protection topology-SM15T6V8A-M3/57T is intended for DC rail clamping only.
SM15T6V8A-M3/57T 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-M3/57T FAQ
1.How can I place an order for SM15T6V8A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8A-M3/57T 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-M3/57T reliable?
The price and inventory of SM15T6V8A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8A-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T6V8A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8A-M3/57T?
SM15T6V8A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8A-M3/57T 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-M3/57T?
For technical support, including SM15T6V8A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8A-M3/57T requirements.
6.How does Aetrix verify that SM15T6V8A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T6V8A-M3/57T 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-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T6V8A-M3/57T?
All SM15T6V8A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8A-M3/57T, 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-M3/57T part is unused and in its original packaging.
Return procedure for SM15T6V8A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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