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Vishay General Semiconductor - Diodes Division SM6T15AHE3_A/H
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- Part No.:
- SM6T15AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15AHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,540
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Product details
Overview
SM6T15AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 15 V breakdown voltage (VBR = 14.3–15.8 V at 1.0 mA), 21.2 V maximum 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 signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T15AHE3_A/H datasheet, SM6T15AHE3_A/H pinout, SM6T15AHE3_A/H application, or SM6T15AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 12.8 V stand-off voltage (VWM), <1.0 μA reverse leakage at VWM, and thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
The SM6T15AHE3_A/H operates as a unidirectional clamping device with glass-passivated junction, optimized for fast transient response to ESD and surge events. Its low-inductance SMB package and 20 °C/W junction-to-lead thermal resistance support reliable energy dissipation during repetitive 10/1000 μs pulses up to 600 W.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and is rated for operation from −65 °C to +150 °C junction temperature. The cathode band marking enables unambiguous PCB orientation during automated placement on 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 12.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| 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 capability without failure under standard waveform |
| IR @ VWM | <1.0 μA - ensures negligible standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables use in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.20 mm height and 5.59 mm length |
Pinout & Package
SMB (DO-214AA) package with matte tin-plated leads; cathode indicated by molded band on body. Leads are solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference | Provides return path for surge current during clamping; must be routed with low-inductance trace to ground plane |
| Cathode | Current exit terminal in forward bias; marked by band; connects to protected line | Directly interfaces with sensitive IC input or MOSFET gate; determines polarity of protection direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1 and Pulse 2b transients without degradation |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without preconditioning |
| Low 100 °C/W RθJA | Enables effective thermal management on standard 2-layer PCBs without heatsinking |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to limit transient overvoltage to safe levels. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during ISO 16750-2 load dump events (up to 35 V, 100 ms). |
Use Scenario: Safeguarding digital input terminals of programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff voltage (12.8 V) matches 24 V DC input logic thresholds while clamping surges above 21.2 V within microseconds. Use Value: Eliminates false triggering and extends mean time between failures in harsh EMI environments with frequent contactor switching. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Shielding USB-C PD port power delivery lines and CC detection circuits from ESD and AC line coupling in wall adapters. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed upstream of buck controller ICs and level shifters. Use Value: Maintains <1.0 μA leakage at 12.8 V to avoid battery drain in always-on charging circuits while meeting IEC 61000-4-2 Level 4 (15 kV air). |
Use Scenario: Protecting Ethernet PHY interface pins and PoE injectors from lightning-induced surges on outdoor telecom line cards. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection scheme, coordinated with GDT and series impedance. Use Value: Limits induced transients to ≤21.2 V at 28 A, preserving signal integrity across 100BASE-TX and reducing need for secondary protection components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage 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 footprint, higher RθJA = 130 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC15A | Identical electrical specs, but SMC (DO-214AB) package - 2.6 mm height, 7.1 mm length; same AEC-Q101 option available (1.5SMC15AHE3) | Requires larger PCB pad area; better thermal performance (RθJA ≈ 70 °C/W) but incompatible with tight SMB layouts | Choose when higher thermal margin is critical and board space permits larger footprint |
Compared with SMAJ15A and 1.5SMC15A, SM6T15AHE3_A/H delivers AEC-Q101 assurance in the smallest qualified SMB outline, enabling compact, automotive-compliant designs without sacrificing 600 W surge capacity or low-leakage performance.
Availability
SM6T15AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC inputs, and consumer power adapter interfaces requiring stable component supply and full AEC-Q101 compliance.
Supply support for SM6T15AHE3_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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SM6T Series was engineered specifically for robust transient suppression in space-constrained, high-reliability environments - emphasizing AEC-Q101 qualification, low-profile SMB packaging, and consistent 600 W surge capability across the voltage range.
FAQ
What is the exact breakdown voltage range for SM6T15AHE3_A/H?
The SM6T15AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 14.3 V to 15.8 V at 1.0 mA test current, as specified in the Vishay datasheet Document Number 88385. This tolerance ensures predictable clamping behavior across production lots and temperature extremes, making SM6T15AHE3_A/H suitable for precision protection where overvoltage margins must remain tightly controlled.
Is SM6T15AHE3_A/H qualified for automotive applications?
Yes, SM6T15AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in the Vishay SM6T Series datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating SM6T15AHE3_A/H for use in engine control units, body electronics, and ADAS sensor modules where automotive-grade reliability is mandatory.
What does the "HE3" suffix indicate in SM6T15AHE3_A/H?
The "HE3" suffix in SM6T15AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" identifies the automotive-grade version - distinct from commercial "E3" parts - and confirms that SM6T15AHE3_A/H meets both environmental compliance and automotive reliability standards without requiring additional screening.
What is the maximum clamping voltage of SM6T15AHE3_A/H under surge conditions?
The SM6T15AHE3_A/H exhibits a maximum clamping voltage (VC) of 21.2 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 28.0 A. This value is measured per Figure 1 in the official datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events, directly supporting design margin calculations for downstream ICs.
Can SM6T15AHE3_A/H replace SMAJ15A in an existing design?
SM6T15AHE3_A/H is not a direct drop-in replacement for SMAJ15A due to differing package outlines (SMB vs. SMA) and thermal characteristics. While both share identical VBR and VC specs, SM6T15AHE3_A/H offers higher PPPM (600 W vs. 400 W) and AEC-Q101 qualification - but requires PCB layout revision to accommodate the SMB footprint and updated thermal validation for the 100 °C/W RθJA.
SM6T15AHE3_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 (SMBJ)
SM6T15AHE3_A/H FAQ
1.How can I place an order for SM6T15AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15AHE3_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 SM6T15AHE3_A/H reliable?
The price and inventory of SM6T15AHE3_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 SM6T15AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T15AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15AHE3_A/H?
SM6T15AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15AHE3_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 SM6T15AHE3_A/H?
For technical support, including SM6T15AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15AHE3_A/H requirements.
6.How does Aetrix verify that SM6T15AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T15AHE3_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 SM6T15AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T15AHE3_A/H?
All SM6T15AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15AHE3_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 SM6T15AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T15AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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