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Vishay General Semiconductor - Diodes Division SM6T15AHE3_B/H
- Part No.:
- SM6T15AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15AHE3_B/H.pdf
- Description:
- 600W,15V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,327
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Product details
Overview
SM6T15AHE3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 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 with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T15AHE3_B/H datasheet, SM6T15AHE3_B/H pinout, SM6T15AHE3_B/H application, or SM6T15AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 12.8 V stand-off voltage (VWM), 1.0 μA max reverse leakage at VWM, and thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
The SM6T15AHE3_B/H operates as a unidirectional clamping device with cathode-banded polarity, utilizing a glass-passivated silicon junction to achieve low inductance and fast response to transients. Its 10/1000 μs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5.
Designed for surface-mount automated placement, it meets MSL Level 1 per J-STD-020 and supports peak forward surge current up to 100 A (10 ms half-sine), with operating junction temperature range from –65 °C to +150 °C and thermal resistance RθJA = 100 °C/W on standard 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 reliable conduction onset under transient stress |
| 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) - clamping voltage limiting downstream IC voltage exposure |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| RθJA | 100 °C/W - thermal performance baseline for PCB pad layout design and derating above 25 °C |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to protected circuit ground or low-side reference point |
| Cathode | Current exit terminal; marked with band | Connected to line being protected (e.g., sensor output, MOSFET gate) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV) without degradation when properly mounted |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage over lifetime and temperature extremes |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time) |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard reflow profiles up to 260 °C peak |
Applications
| Automotive Sensor Protection | MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes induced by load dump or inductive switching. Use Value: Prevents sensor IC latch-up or damage while maintaining signal integrity below 12.8 V stand-off threshold. |
Use Scenario: Safeguarding gate-source terminals of power MOSFETs in motor drivers and DC-DC converters. IC Role / Device Role / Timing Role: Fast clamping of Miller-induced voltage spikes during high dv/dt switching transitions. Use Value: Limits gate voltage to ≤21.2 V during 28 A surge events, avoiding oxide breakdown and ensuring long-term gate reliability. |
| Industrial PLC I/O Protection | Telecom Line Interface Protection |
Use Scenario: Shielding digital input channels of programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standby-mode suppression of EFT/burst noise and lightning-induced transients on 24 V DC inputs. Use Value: Maintains <1.0 μA leakage at 12.8 V to avoid false triggering while delivering 600 W pulse handling. |
Use Scenario: Front-end protection of RS-485 transceivers and Ethernet PHY interfaces in base station equipment. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on DC bias rails feeding interface ICs. Use Value: Enables compact placement near connector due to SMB footprint and 100 °C/W thermal profile. |
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-E3/52 | Same VBR range (14.3–15.8 V), but lower PPPM = 400 W; SMA package (DO-214AC), RθJA = 125 °C/W | Limited to lower-energy transients; less suitable for automotive load-dump scenarios requiring 600 W | Select SMAJ15A-E3/52 only if board space allows larger SMA footprint and surge requirements are ≤400 W |
| 1.5SMC15A-H | Identical electrical specs (VBR, VC, PPPM), but SMC (DO-214AB) package; higher IFSM = 200 A vs. 100 A | Better surge endurance for repetitive events; larger footprint increases PCB area by ~30% | Choose 1.5SMC15A-H when higher single-pulse surge margin or legacy SMC layout compatibility is required |
Compared with SMAJ15A-E3/52 and 1.5SMC15A-H, the SM6T15AHE3_B/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and compact SMB footprint-making it preferred for space-constrained automotive and industrial designs where thermal management relies on 0.2" × 0.2" copper pads.
Availability
SM6T15AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, and telecom interface protection requiring stable component supply, AEC-Q101 qualification, and consistent 600 W transient immunity.
Supply support for SM6T15AHE3_B/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 automotive, industrial, and computing markets.
The SM6T Series was engineered specifically for surface-mount transient suppression in harsh environments, emphasizing AEC-Q101 qualification, low-inductance packaging, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the polarity configuration of the SM6T15AHE3_B/H?
The SM6T15AHE3_B/H is a unidirectional transient voltage suppressor diode, with cathode identified by a visible band marking on the SMB package body. This polarity ensures clamping only during reverse-voltage transients on the cathode-connected line, while allowing normal forward-biased operation of associated circuitry. The SM6T15AHE3_B/H must be oriented with cathode toward the protected signal line and anode to system ground or return path.
Is the SM6T15AHE3_B/H qualified for automotive applications?
Yes, the SM6T15AHE3_B/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM6T series datasheet (Doc. #88385, Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making the SM6T15AHE3_B/H suitable for under-hood and chassis-mounted automotive electronics such as engine control modules and ADAS sensor interfaces.
What is the maximum clamping voltage of the SM6T15AHE3_B/H under surge conditions?
The SM6T15AHE3_B/H has a maximum clamping voltage (VC) of 21.2 V when subjected to a 10/1000 μs waveform peak pulse current (IPPM) of 28.0 A. This value is measured per standard test conditions defined in the datasheet and represents the upper limit of voltage seen by downstream components during a 600 W transient event, ensuring safe operation of 12 V-rated ICs and MOSFETs.
How does the SM6T15AHE3_B/H differ from bidirectional TVS diodes like SM6T15CA?
The SM6T15AHE3_B/H is unidirectional and features a cathode band for polarity-sensitive placement, whereas SM6T15CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SM6T15AHE3_B/H offers lower leakage at VWM (1.0 μA vs. 2.0 μA for VWM ≤10 V variants) and is intended for DC-biased lines; SM6T15CA suits AC-coupled or floating signal paths where polarity reversal may occur.
What PCB pad layout is recommended for optimal thermal performance of the SM6T15AHE3_B/H?
Vishay specifies mounting the SM6T15AHE3_B/H on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve the rated RθJA of 100 °C/W. Pad dimensions must follow the SMB (DO-214AA) outline drawing: minimum 0.086" (2.18 mm) pad length and 0.060" (1.52 mm) width, with solder mask defined to expose full pad area. Thermal vias under pads are not required but improve derating above 25 °C ambient.
SM6T15AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T15AHE3_B/H FAQ
1.How can I place an order for SM6T15AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15AHE3_B/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_B/H reliable?
The price and inventory of SM6T15AHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SM6T15AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15AHE3_B/H?
SM6T15AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15AHE3_B/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_B/H?
For technical support, including SM6T15AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15AHE3_B/H requirements.
6.How does Aetrix verify that SM6T15AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T15AHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SM6T15AHE3_B/H?
All SM6T15AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15AHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for SM6T15AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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