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Vishay General Semiconductor - Diodes Division SM6T15AHM3_A/H
- Part No.:
- SM6T15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15AHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,757
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Product details
Overview
SM6T15AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, with 15 V breakdown voltage (VBR = 14.3–15.8 V at 1.0 mA), 12.8 V stand-off voltage (VWM), 21.2 V clamping voltage (VC) at 28.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and ICs against inductive switching transients in automotive powertrain control modules.
For engineers reviewing the SM6T15AHM3_A/H datasheet, SM6T15AHM3_A/H pinout, SM6T15AHM3_A/H application, or SM6T15AHM3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, low clamping ratio (VC/VBR ≈ 1.43), and MSL Level 1 moisture sensitivity.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds VWM = 12.8 V and limiting downstream voltage to ≤21.2 V at 28.0 A. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM).
The SMB package delivers low inductance and thermal resistance (RθJA = 100 °C/W, RθJL = 20 °C/W), enabling effective energy dissipation during 10/1000 μs surges. It is rated for TJ = –65 to +150 °C and qualified to AEC-Q101 for automotive under-hood use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise conduction onset threshold for reliable overvoltage detection |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 21.2 V at 28.0 A (10/1000 μs) - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient power handling capacity without failure under standardized waveform |
| TJ range | –65 °C to +150 °C - enables operation in engine bay and industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly and 0.2" × 0.2" copper pad layout |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, cathode indicated by band marking, compliant with J-STD-002 solderability and JESD22-B102 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to ground or low-side reference; forms clamping path with cathode during transients |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line; conducts avalanche current when VAK > VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in 12 V automotive loads without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low long-term drift under thermal stress |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning or baking |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental standards and end-of-life material restrictions |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VWM |
Applications
| Automotive Powertrain Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Suppresses load-dump and inductive kickback spikes on solenoid driver outputs in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between MOSFET drain and battery rail. Use Value: Limits transient voltage to 21.2 V, protecting 3.3 V/5 V microcontrollers and gate drivers from damage during 100 V/50 ms load dump events. | Use Scenario: Shields 24 V digital input channels from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff protector on signal line prior to optocoupler or Schmitt trigger input stage. Use Value: Maintains <1.0 μA leakage at 12.8 V, ensuring clean logic thresholds while clamping 28 A surges to safe levels. |
| Automotive Body Electronics | Consumer Appliance Motor Control |
Use Scenario: Guards LIN bus transceivers and window lift motor drivers against ESD and relay bounce in door modules. IC Role / Device Role / Timing Role: Localized transient suppressor mounted directly at connector interface. Use Value: AEC-Q101 qualification guarantees performance stability across –40 °C to +125 °C ambient, critical for body control units. | Use Scenario: Protects half-bridge gate drivers in smart washing machine motor inverters from back-EMF spikes. IC Role / Device Role / Timing Role: Clamping element across high-side MOSFET source-drain during commutation. Use Value: 600 W rating absorbs repetitive 10/1000 μs pulses from brushed DC motor switching without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR range (14.3–15.8 V) but lower PPPM = 400 W; SMA package (larger RθJA = 125 °C/W) | Not AEC-Q101 qualified; suitable only for commercial-grade consumer or industrial use | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5SMC15A | Higher PPPM = 1500 W; SMC package (larger footprint); VC = 24.4 V at 61.5 A | Overqualified for 600 W needs; requires PCB area increase and may reduce layout density | Select only when system-level surge testing exceeds IEC 61000-4-5 Level 4 requirements |
Compared with SMAJ15A and 1.5SMC15A, SM6T15AHM3_A/H uniquely balances AEC-Q101 compliance, SMB footprint efficiency, and precise 600 W capability-making it optimal for space-constrained automotive modules where qualification and thermal performance are jointly critical.
Availability
SM6T15AHM3_A/H is available at Aetrix Electronics and suitable for automotive powertrain control, industrial PLC I/O protection, and consumer appliance motor control requiring stable component supply across extended production lifecycles.
Supply support for SM6T15AHM3_A/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with global manufacturing and testing infrastructure focused on reliability and automotive-grade quality.
The SM6T Series is engineered specifically for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and surface-mount manufacturability are essential.
FAQ
What is the clamping voltage of SM6T15AHM3_A/H and how is it measured?
The clamping voltage of SM6T15AHM3_A/H is 21.2 V, measured at 28.0 A peak pulse current using a standardized 10/1000 μs double-exponential waveform. This value reflects the maximum voltage imposed on the protected circuit during a surge event and is guaranteed per Vishay's datasheet test conditions with specified mounting pad layout.
Is SM6T15AHM3_A/H qualified for automotive applications?
Yes, SM6T15AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and explicit listing in Vishay's automotive ordering codes. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements, making it suitable for under-hood and body electronics in passenger vehicles.
What does the "HM3" suffix indicate in SM6T15AHM3_A/H?
The "HM3" suffix in SM6T15AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade M3 (halogen-free, non-automotive) and HE3 (RoHS-compliant AEC-Q101) versions, confirming full compliance with automotive environmental and reliability standards.
What is the maximum operating junction temperature for SM6T15AHM3_A/H?
The maximum operating junction temperature for SM6T15AHM3_A/H is +150 °C, with a storage temperature range extending from –65 °C to +150 °C. This rating supports deployment in high-ambient environments such as engine compartments, provided thermal design follows Vishay's recommended 0.2" × 0.2" copper pad layout.
How does SM6T15AHM3_A/H differ from bidirectional variants like SM6T15CA?
SM6T15AHM3_A/H is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. In contrast, SM6T15CA is bidirectional, lacks polarity marking, and provides symmetrical clamping for AC or floating signal lines. Their VBR, VC, and PPPM ratings are identical, but circuit integration differs fundamentally.
SM6T15AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SM6T15AHM3_A/H FAQ
1.How can I place an order for SM6T15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15AHM3_A/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 SM6T15AHM3_A/H reliable?
The price and inventory of SM6T15AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15AHM3_A/H?
SM6T15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15AHM3_A/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 SM6T15AHM3_A/H?
For technical support, including SM6T15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15AHM3_A/H requirements.
6.How does Aetrix verify that SM6T15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T15AHM3_A/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 SM6T15AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T15AHM3_A/H?
All SM6T15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15AHM3_A/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 SM6T15AHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T15AHM3_A/H Tags
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