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Vishay General Semiconductor - Diodes Division SM15T6V8A-E3/9AT
- Part No.:
- SM15T6V8A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8A-E3/9AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,497
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Product details
Overview
SM15T6V8A-E3/9AT 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), 6.45–7.14 V breakdown voltage at 10 mA, 5.8 V stand-off voltage, and clamps to ≤10.5 V at 143 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply inputs.
For engineers reviewing the SM15T6V8A-E3/9AT datasheet, SM15T6V8A-E3/9AT pinout, SM15T6V8A-E3/9AT application, or SM15T6V8A-E3/9AT equivalent, key selection criteria include clamping voltage under 10.5 V at 143 A, unidirectional polarity with cathode band marking, RoHS-compliant E3 suffix, and SMC package compatibility with automated placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting voltage-clamping protection device, triggered when reverse voltage exceeds 5.8 V stand-off level and fully clamping within nanoseconds to limit transient energy. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1000 μA at VWM).
The device sustains 200 A non-repetitive forward surge current (10 ms half-sine) and exhibits thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature under defined PCB pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - withstands lightning-induced surges and inductive switching transients without failure |
| Breakdown Voltage VBR (at 10 mA) | 6.45–7.14 V - defines precise conduction onset threshold for overvoltage detection |
| Stand-off Voltage VWM | 5.8 V - maximum continuous reverse voltage before leakage exceeds 1000 μA |
| Clamping Voltage VC (at 143 A) | ≤10.5 V - limits protected circuit voltage during worst-case 10/1000 μs transient |
| Peak Pulse Current IPPM | 143 A - maximum surge current handled at rated clamping voltage |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - surface-mount, low-inductance, MSL Level 1, 260 °C reflow compatible |
Pinout & Package
SM15T6V8A-E3/9AT uses the standard SMC (DO-214AB) package: molded plastic body with matte tin-plated leads, cathode indicated by a band on the case. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per JEDEC recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line | Receives transient energy from I/O or power rail; polarity-sensitive-reversal disables protection |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating on standard PCB layouts |
| Glass passivated chip junction | Ensures stable VBR tolerance (±5%), low leakage drift over temperature, and long-term reliability in humid environments |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes stress on downstream components-e.g., keeps 5 V logic rails below 10.5 V during clamping |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorning or delamination |
| AEC-Q101 qualification option (HE3 suffix) | Validates suitability for automotive powertrain and body electronics where field failure is unacceptable |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping within <1 ns after overvoltage onset. Use Value: Limits rail voltage to ≤10.5 V during 143 A transients, preventing damage to 16 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) from pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting induced ESD (IEC 61000-4-2 ±8 kV contact) and cable-coupled noise onto signal path. Use Value: Clamps transients while maintaining <1000 μA leakage at 5.8 V, preserving signal integrity and ADC accuracy. |
| Consumer USB Power Port Protection | Telecom DSL Line Interface Protection |
Use Scenario: 5 V USB Type-A ports in smart home hubs subjected to human-body-model ESD and hot-plug surges. IC Role / Device Role / Timing Role: Primary front-end TVS on VBUS line, coordinated with secondary polymer PTC for overcurrent limiting. Use Value: Responds faster than integrated PMIC protection, clamping 30 A ESD events to <10.5 V before internal LDOs latch or fail. |
Use Scenario: DSL line cards interfacing twisted-pair telephone lines exposed to lightning-induced longitudinal surges (ITU-T K.20/K.21). IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on tip/ring differential pair, followed by gas discharge tube for high-energy diversion. Use Value: Handles 1500 W pulses without degradation, enabling >100,000 surge cycles before VBR shift exceeds 5 %. |
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 | Lower peak power (400 W), same SMC package, VBR 7.14–7.88 V, VC = 11.5 V at 34.6 A | Rated for lower-energy threats (e.g., IEC 61000-4-2 only); insufficient for lightning-level IEC 61000-4-5 | Select SMAJ6.8A only for cost-sensitive consumer applications with verified sub-500 W threat profiles. |
| SMCJ6.8A | Same 1500 W rating and SMC package, but higher VBR (6.45–7.5 V), VC = 11.2 V at 134 A, slightly higher clamping | Compatible with identical PCB footprints; used where marginally higher clamping voltage is acceptable for legacy designs | Choose SMCJ6.8A if existing layout validation exists and clamping voltage budget allows +0.7 V overhead. |
Compared with SMAJ6.8A and SMCJ6.8A, SM15T6V8A-E3/9AT delivers tighter VBR tolerance (±5 % vs. ±10 %), lower clamping voltage (10.5 V vs. ≥11.2 V), and guaranteed 1500 W performance on standard 8 mm² pads-making it optimal for next-generation automotive and industrial designs demanding minimal voltage overshoot.
Availability
SM15T6V8A-E3/9AT is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor signal line protection, and telecom DSL line interface protection requiring stable component supply across production lifecycles.
Supply support for SM15T6V8A-E3/9AT 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 designed specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SM15T6V8A-E3/9AT at its rated peak pulse current?
The SM15T6V8A-E3/9AT clamps to a maximum of 10.5 V at its peak pulse current of 143 A under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 0.31" × 0.31" copper pads per terminal and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The SM15T6V8A-E3/9AT achieves this clamping performance while maintaining low dynamic impedance and fast response time.
Is SM15T6V8A-E3/9AT RoHS-compliant and halogen-free?
Yes, SM15T6V8A-E3/9AT carries the "E3" suffix, indicating it is RoHS-compliant and commercial grade per Vishay's material categorization. It is not halogen-free; for halogen-free compliance, the "M3" suffix variant (e.g., SM15T6V8A-M3/9AT) must be selected. Both E3 and M3 versions meet JESD 201 Class 2 whisker testing and J-STD-020 MSL Level 1 reflow requirements.
Does SM15T6V8A-E3/9AT have AEC-Q101 qualification?
No, SM15T6V8A-E3/9AT is not AEC-Q101 qualified. That qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., SM15T6V8AHE3_A/I). The E3 suffix denotes commercial-grade RoHS compliance only. For automotive applications requiring AEC-Q101, engineers must specify the HE3 or HM3 version and verify qualification status via Vishay's official documentation.
What is the thermal resistance of SM15T6V8A-E3/9AT, and how does it affect PCB layout?
The SM15T6V8A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W. To achieve these values, the device must be mounted on minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Reducing pad area increases RθJA, raising junction temperature during sustained power dissipation and potentially triggering thermal runaway during repetitive surges.
How does the unidirectional configuration of SM15T6V8A-E3/9AT impact circuit integration?
The unidirectional configuration of SM15T6V8A-E3/9AT requires correct polarity orientation: cathode (marked band) connects to the protected line, anode to ground. Reversal renders the device ineffective for reverse transients and may cause catastrophic failure under forward surge. Unlike bidirectional types (e.g., SM15T6V8CA), SM15T6V8A-E3/9AT does not protect against positive or negative surges on AC-coupled lines without additional design considerations.
SM15T6V8A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SM15T6V8A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8A-E3/9AT 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-E3/9AT reliable?
The price and inventory of SM15T6V8A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T6V8A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8A-E3/9AT?
SM15T6V8A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8A-E3/9AT 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-E3/9AT?
For technical support, including SM15T6V8A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8A-E3/9AT requirements.
6.How does Aetrix verify that SM15T6V8A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T6V8A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T6V8A-E3/9AT?
All SM15T6V8A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T6V8A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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