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Vishay General Semiconductor - Diodes Division SM15T6V8AHE3/9AT
- Part No.:
- SM15T6V8AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8AHE3/9AT.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,243
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Product details
Overview
SM15T6V8AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode 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 robust overvoltage protection of 5 V logic rails, USB interfaces, and automotive sensor signal lines.
For engineers reviewing the SM15T6V8AHE3/9AT datasheet, SM15T6V8AHE3/9AT pinout, SM15T6V8AHE3/9AT application, or SM15T6V8AHE3/9AT equivalent, key selection criteria include verified clamping performance under 143 A surge, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on standard 8 mm × 8 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable leakage (<1000 μA at VWM) and low dynamic impedance, enabling precise clamping within 10.5 V at rated IPPM. The device is rated for -65 °C to +150 °C junction temperature and fails short-circuit under overstress.
Designed for high-impedance source environments (e.g., I/O lines, sensor outputs), it delivers 1500 W peak pulse power without derating up to 25 °C ambient. Thermal resistance is 75 °C/W junction-to-ambient (on recommended pad layout) and 15 °C/W junction-to-lead, supporting reliable operation in compact automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 6.45 V - Ensures reliable avalanche conduction above nominal 5 V rail, avoiding false triggering during normal operation |
| VWM | 5.8 V - Maximum continuous reverse voltage before leakage exceeds 1000 μA; matches 5 V system tolerance |
| VC @ IPPM | 10.5 V - Clamps transients to safe level for downstream 12 V-tolerant ICs when subjected to 143 A surge |
| PPPM | 1500 W - Withstands lightning-induced surges (10/1000 μs) common in automotive and industrial I/O protection |
| IPPM | 143 A - Peak pulse current capability validated on 8.0 mm × 8.0 mm copper pads per JEDEC standards |
| TJ max | +150 °C - Enables use in under-hood automotive modules and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics per JESD22-A108, including temperature cycling and HTRB |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional configuration | Connected to protected line (e.g., USB D+); clamps positive transients to ground when reverse-biased |
| Anode | Reference/ground connection | Typically tied to system ground plane; provides return path for surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1000 μA) across temperature and lifetime |
| 1500 W peak pulse power (10/1000 μs) | Provides immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth) in properly impedance-matched circuits |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low inductance SMC package | Minimizes voltage overshoot during fast transients (<1 ns rise time), critical for protecting high-speed data lines |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns, reducing manufacturing risk |
Applications
| Automotive Sensor Protection | USB 2.0 Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and chassis ground to clamp transients before reaching MCU ADC input or signal conditioner. Use Value: Limits induced voltage to ≤10.5 V during 143 A surge, preserving signal integrity and preventing latch-up in 5 V rail-connected sensors. | Use Scenario: Safeguarding USB D+/D- lines in automotive infotainment head units against ESD (IEC 61000-4-2 ±15 kV) and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-signal line to suppress positive-going transients while allowing normal 0–3.3 V data signaling. Use Value: Achieves <1 ns response time and clamps ESD pulses to safe levels without distorting 480 Mbps USB 2.0 eye diagram. |
| Industrial PLC I/O Protection | DC Power Rail Clamp (5 V) |
Use Scenario: Guarding digital input channels on programmable logic controllers against inductive kickback from solenoid drivers and relay coils. IC Role / Device Role / Timing Role: TVS installed at terminal block entry point to divert >1 kA surge energy away from optocoupler input stage. Use Value: Absorbs 1500 W transient energy without degradation, maintaining channel isolation integrity after repeated 10/1000 μs surges. | Use Scenario: Secondary overvoltage clamp on regulated 5 V supply rail feeding microcontrollers and memory in embedded gateways. IC Role / Device Role / Timing Role: Parallel-connected TVS providing last-line defense against regulator failure or backfeed transients exceeding 5.8 V. Use Value: Activates only during fault conditions (VWM = 5.8 V), eliminating standby power loss while ensuring rail stays below 10.5 V during overload. |
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 @ 64.5 A), same SMC package but non-AEC-Q101 | Rated for commercial-grade industrial use only; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification and surge energy is limited to <400 W |
| 1.5KE6.8A | Higher VC (11.5 V @ 131 A), axial DO-201 package, no AEC-Q101, lower thermal performance (RθJA ≈ 100 °C/W) | Requires through-hole mounting and larger board area; unsuitable for high-density automotive PCBs | Choose only for legacy through-hole designs where rework to SMD is impractical |
Compared with SMAJ6.0A-E3/57T and 1.5KE6.8A, SM15T6V8AHE3/9AT delivers 3.75× higher surge power handling, AEC-Q101 compliance for automotive deployment, and superior thermal dissipation in space-constrained SMT layouts - making it the preferred choice for next-generation vehicle ECUs and ruggedized industrial controllers.
Availability
SM15T6V8AHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 port protection, and industrial PLC I/O modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM15T6V8AHE3/9AT 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SM15T Series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive powertrain and body electronics, industrial automation I/O, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SM15T6V8AHE3/9AT at its rated peak pulse current?
The SM15T6V8AHE3/9AT 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 with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines and guarantees predictable overvoltage limiting for 5 V systems.
Is SM15T6V8AHE3/9AT qualified for automotive applications?
Yes, SM15T6V8AHE3/9AT is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet (Document Number: 88380). It has passed stress tests including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing - making it suitable for engine control, body electronics, and ADAS sensor modules.
What does the "9AT" suffix indicate in SM15T6V8AHE3/9AT?
"9AT" denotes the packaging format: 13-inch diameter plastic tape and reel, containing 3500 units per reel. This format supports high-volume automated SMT assembly and is compatible with standard pick-and-place equipment. The "HE3" portion confirms RoHS-compliance and AEC-Q101 qualification, while "SM15T6V8A" specifies the electrical variant (6.45–7.14 V VBR, unidirectional).
How does SM15T6V8AHE3/9AT differ from bidirectional TVS diodes like SM15T6V8CA?
SM15T6V8AHE3/9AT is unidirectional and features a cathode band for polarity identification; it conducts only during reverse-bias overvoltage events. In contrast, SM15T6V8CA is bidirectional, symmetrical, and lacks polarity marking - enabling protection against both positive and negative transients on AC or differential lines. Their VBR, VC, and PPPM ratings are identical, but circuit integration differs fundamentally.
What is the maximum operating junction temperature for SM15T6V8AHE3/9AT?
The maximum operating junction temperature (TJ) for SM15T6V8AHE3/9AT is +150 °C, as specified in the Vishay datasheet. This allows reliable operation in under-hood automotive environments and enclosed industrial enclosures. Derating begins above 25 °C ambient, with pulse power reduced linearly per Figure 2 in Document Number 88380.
SM15T6V8AHE3/9AT 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SM15T6V8AHE3/9AT FAQ
1.How can I place an order for SM15T6V8AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8AHE3/9AT 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 SM15T6V8AHE3/9AT reliable?
The price and inventory of SM15T6V8AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T6V8AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8AHE3/9AT?
SM15T6V8AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8AHE3/9AT 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 SM15T6V8AHE3/9AT?
For technical support, including SM15T6V8AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8AHE3/9AT requirements.
6.How does Aetrix verify that SM15T6V8AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T6V8AHE3/9AT 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 SM15T6V8AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T6V8AHE3/9AT?
All SM15T6V8AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8AHE3/9AT, 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 SM15T6V8AHE3/9AT part is unused and in its original packaging.
Return procedure for SM15T6V8AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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