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Vishay General Semiconductor - Diodes Division SM15T6V8AHM3/H
- Part No.:
- SM15T6V8AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T6V8AHM3/H.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,131
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Product details
Overview
SM15T6V8AHM3/H 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 10.5 V clamping voltage at 143 A peak pulse current. It protects automotive-grade signal lines and MOSFET gates against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T6V8AHM3/H datasheet, SM15T6V8AHM3/H pinout, SM15T6V8AHM3/H application, or SM15T6V8AHM3/H equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, unidirectional polarity alignment with circuit bias, AEC-Q101 qualification for automotive use, and SMC package thermal performance under 6.5 W steady-state dissipation.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents <1 μA leakage at 5.8 V; during transients exceeding VBR, it avalanches to clamp voltage at ≤10.5 V while diverting up to 143 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low inductance for fast response.
Designed for high-reliability automotive applications, SM15T6V8AHM3/H meets AEC-Q101 stress test requirements and is halogen-free, RoHS-compliant. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads, enabling robust surge handling without external heatsinking in typical PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.8 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for safe DC bias in protected line |
| VBR @ IT=10 mA | 6.45–7.14 V - Verified avalanche onset range; ensures reliable triggering above system logic-high levels |
| VC @ IPPM=143 A | 10.5 V - Clamped voltage during 1500 W transient; must stay below protected device's absolute max rating |
| PPPM | 1500 W - Peak pulse power handling (10/1000 μs); qualifies for IEC 61000-4-5 Level 4 surge immunity |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive environments with derated power |
| Package | SMC (DO-214AB) - Standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement |
Pinout & Package
SM15T6V8AHM3/H uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, MSL level 1, and polarity indicated by a cathode band on the unidirectional device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to higher-potential side of protected line; clamps positive transients to ground when referenced correctly |
| Anode (non-banded end) | Cathode of internal PN junction | Typically tied to ground or low-side reference; completes shunt path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges per IEC 61000-4-5, even with source impedances >2 Ω |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive under-hood applications including engine control units and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes voltage overshoot during clamping-critical for safeguarding 5 V or 3.3 V logic-level ICs |
| Halogen-free & RoHS-compliant | Meets automotive OEM environmental mandates and enables use in green manufacturing supply chains |
Applications
| Automotive Powertrain Sensors | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting crankshaft position sensor signal lines from inductive kickback generated by adjacent solenoid drivers in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ECU input, referenced to chassis ground. Use Value: Clamps transients to ≤10.5 V, preventing latch-up or gate oxide damage in downstream 5 V comparator inputs. | Use Scenario: Safeguarding PLC analog input channels connected to 24 V field sensors exposed to relay-coil switching noise. IC Role / Device Role / Timing Role: Shunt protector on signal line with cathode tied to 24 V rail and anode grounded-suppresses negative-going spikes. Use Value: Withstands 143 A peak pulses without degradation, ensuring long-term reliability in factory automation environments. |
| Automotive Body Control Modules | Telecom Power Supply Rails |
Use Scenario: Guarding LIN bus transceiver pins against ESD and load-dump transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS with cathode to VCC (12 V), anode to LIN line-clamps positive excursions above VCC. Use Value: 5.8 V stand-off allows normal LIN signaling (0–12 V) while responding within <1 ns to >200 V transients. | Use Scenario: Secondary-side overvoltage suppression on +5 V DC-DC converter outputs feeding baseband processors. IC Role / Device Role / Timing Role: Standoff-rated TVS across output rail and ground, triggered only during fault conditions. Use Value: 10.5 V clamping prevents processor brownout or reset during 1500 W surge events on telecom power infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8AHE3/A | Lower peak power (400 W), same VWM/VBR, SMA package (smaller thermal mass) | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select when cost sensitivity outweighs automotive reliability requirements and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE6.8A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or halogen-free certification | Limited to non-automotive industrial equipment where manual assembly or legacy board design prevails | Choose only if SMC footprint compatibility is not required and board space permits larger through-hole mounting |
Compared with SMAJ6.8AHE3/A and 1.5KE6.8A, SM15T6V8AHM3/H delivers 3.75× higher surge power handling, automotive-grade qualification, and surface-mount scalability-making it the sole choice for next-generation AEC-Q101-compliant designs requiring robust 1500 W protection in compact SMC form factor.
Availability
SM15T6V8AHM3/H is available at Aetrix Electronics and suitable for automotive powertrain sensors, industrial motor drive I/O, and telecom power supply rails requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SM15T6V8AHM3/H 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, precision, and automotive-grade validation.
The SM15T Series is engineered specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SM15T6V8AHM3/H at its rated peak pulse current?
The SM15T6V8AHM3/H has a maximum clamping voltage (VC) of 10.5 V when subjected to its peak pulse current (IPPM) of 143 A under the standard 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal and is critical for verifying margin against the absolute maximum ratings of downstream ICs. The SM15T6V8AHM3/H maintains this clamping performance across its full operating temperature range.
Is SM15T6V8AHM3/H qualified for automotive applications?
Yes, SM15T6V8AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88380, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-ensuring suitability for under-hood and body-control module applications. The SM15T6V8AHM3/H also complies with RoHS and is halogen-free.
What does the "HM3" suffix indicate in SM15T6V8AHM3/H?
The "HM3" suffix in SM15T6V8AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "H" indicates AEC-Q101 qualification, "M3" specifies halogen-free and RoHS-compliant materials, and the trailing "/H" denotes revision code H. This distinguishes SM15T6V8AHM3/H from commercial-grade variants like SM15T6V8A-E3 and confirms its suitability for automotive production.
How does SM15T6V8AHM3/H differ from bidirectional TVS diodes in the same series?
SM15T6V8AHM3/H is unidirectional, meaning it conducts only during positive transients relative to its cathode-anode orientation, with a forward voltage drop (~1.2 V) in the forward direction. Bidirectional variants (e.g., SM15T6V8CA) have symmetrical clamping in both polarities and no polarity marking. The SM15T6V8AHM3/H is selected when circuit topology requires asymmetric protection, such as clamping positive spikes on a grounded-line configuration or protecting supply rails referenced to ground.
What is the thermal resistance of SM15T6V8AHM3/H, and how does it affect layout design?
The SM15T6V8AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per lead. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA and risks thermal runaway during repeated surges. For sustained operation near 6.5 W dissipation, designers must ensure adequate copper area and avoid thermal isolation-especially in multi-layer boards with limited inner-layer plane connectivity.
SM15T6V8AHM3/H 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 (SMC)
SM15T6V8AHM3/H FAQ
1.How can I place an order for SM15T6V8AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T6V8AHM3/H 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 SM15T6V8AHM3/H reliable?
The price and inventory of SM15T6V8AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T6V8AHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T6V8AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T6V8AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T6V8AHM3/H?
SM15T6V8AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T6V8AHM3/H 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 SM15T6V8AHM3/H?
For technical support, including SM15T6V8AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T6V8AHM3/H requirements.
6.How does Aetrix verify that SM15T6V8AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T6V8AHM3/H 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 SM15T6V8AHM3/H meets industry standards.
7.What is the process for return or replacement of SM15T6V8AHM3/H?
All SM15T6V8AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T6V8AHM3/H, 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 SM15T6V8AHM3/H part is unused and in its original packaging.
Return procedure for SM15T6V8AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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