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Vishay General Semiconductor - Diodes Division SM6T15AHE3/52
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- Part No.:
- SM6T15AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T15AHE3/52.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
SM6T15AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 12.8 V stand-off voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 28 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the SM6T15AHE3/52 datasheet, SM6T15AHE3/52 pinout, SM6T15AHE3/52 application, or SM6T15AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low-inductance SMB package, and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
The SM6T15AHE3/52 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while the low-inductance SMB package supports fast transient response under 10/1000 μs surge conditions.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to 150 °C junction temperature. It is rated for 100 A non-repetitive forward surge current (IFSM, 10 ms half-sine) and meets AEC-Q101 stress testing requirements for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - Ensures precise, repeatable avalanche turn-on within tight tolerance |
| VC @ IPPM | 21.2 V at 28 A (10/1000 μs) - Limits protected circuit voltage during 600 W transient events |
| PPPM | 600 W - Sustains high-energy surges common in automotive load-dump and inductive switching |
| IFSM | 100 A - Withstands single half-sine surge without degradation, critical for power rail protection |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-ambient industrial settings |
| MSL Level | Level 1 per J-STD-020 - Supports standard reflow without moisture sensitivity concerns |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side (e.g., supply rail or signal line); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients from inductive load switching without failure |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift over temperature and life |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising ESD or lightning-induced transients |
| MSL Level 1 rating | Eliminates pre-bake requirement and supports standard SMT reflow processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and ground. Use Value: Limits rail voltage to ≤21.2 V during 600 W surges, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across signal and return, leveraging 12.8 V VWM to avoid interference during normal operation. Use Value: Clamps transients within 1 ns, with <1.0 μA leakage at 12.8 V, preserving signal integrity and measurement accuracy. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Safeguarding AC/DC adapter primary-side input against surges from mains switching and nearby lightning. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across bulk capacitor input, referenced to chassis ground. Use Value: Absorbs 600 W 10/1000 μs pulses without thermal runaway, maintaining system uptime and safety certification. | Use Scenario: Protecting -48 V telecom power feeds from induced surges on long-distance copper pairs. IC Role / Device Role / Timing Role: Reverse-biased TVS on negative rail relative to ground, using cathode-to-rail configuration. Use Value: Delivers 21.2 V clamping at 28 A with 150 °C TJ rating, ensuring reliability in sealed outdoor cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/52 | Same SMB package, 15 V nominal, but 400 W PPPM (vs. 600 W), higher VC = 24.4 V at 24.4 A | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and surge margin |
| 1.5SMC15A | Same VWM/VBR specs, but SMC (DO-214AB) package - larger footprint, higher thermal mass, RθJA = 40 °C/W | Better thermal dissipation but incompatible PCB layout; no AEC-Q101 variant available | Choose only if board space allows SMC and higher steady-state power handling is required |
Compared with SMAJ15A-E3/52 and 1.5SMC15A, the SM6T15AHE3/52 uniquely combines 600 W surge capability, AEC-Q101 qualification, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring validated reliability and high transient immunity.
Availability
SM6T15AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer power adapters, and telecom DC power systems requiring stable component supply and AEC-Q101 compliance.
Supply support for SM6T15AHE3/52 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, efficiency, and application-specific validation.
The SM6T Series is engineered for robust transient voltage suppression in harsh environments - targeting automotive, industrial, and telecom applications where high pulse power, low clamping, and qualification-grade consistency are mandatory.
FAQ
What is the clamping voltage of SM6T15AHE3/52 under a 10/1000 μs surge?
The SM6T15AHE3/52 has 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 A. This value is measured per Figure 1 in the official Vishay datasheet (Doc. #88385, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SM6T15AHE3/52 maintains this clamping performance across its full operating temperature range.
Is SM6T15AHE3/52 qualified for automotive applications?
Yes, SM6T15AHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life per AEC-Q101 standards. This makes SM6T15AHE3/52 suitable for under-hood and body-control modules where automotive-grade reliability is mandatory.
What is the standoff voltage (VWM) of SM6T15AHE3/52, and why does it matter?
The standoff voltage (VWM) of SM6T15AHE3/52 is 12.8 V - the maximum DC or RMS voltage the device can withstand without entering avalanche conduction. This parameter ensures the SM6T15AHE3/52 remains non-conductive during normal operation of 12 V automotive or industrial systems, minimizing leakage (<1.0 μA) and avoiding false triggering. It directly determines compatibility with nominal supply rails.
Does SM6T15AHE3/52 have a bidirectional version?
No - SM6T15AHE3/52 is strictly unidirectional. Bidirectional variants in the SM6T family use the "CA" suffix (e.g., SM6T15CA). The "A" suffix in SM6T15AHE3/52 indicates unidirectional polarity with tighter VBR tolerance (±5%), and the cathode is marked by a band. Using SM6T15AHE3/52 in bidirectional configurations would result in improper clamping behavior and potential device failure.
What is the thermal resistance of SM6T15AHE3/52, and how does it affect layout?
The SM6T15AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's SMB outline drawing. To maintain safe junction temperatures, PCB layout must replicate these pad dimensions and avoid excessive trace length or isolation - otherwise, thermal derating becomes necessary above 25 °C ambient.
SM6T15AHE3/52 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:
- Discontinued at Digi-Key
- 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)
SM6T15AHE3/52 FAQ
1.How can I place an order for SM6T15AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T15AHE3/52 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 SM6T15AHE3/52 reliable?
The price and inventory of SM6T15AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T15AHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T15AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T15AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T15AHE3/52?
SM6T15AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T15AHE3/52 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 SM6T15AHE3/52?
For technical support, including SM6T15AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T15AHE3/52 requirements.
6.How does Aetrix verify that SM6T15AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T15AHE3/52 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 SM6T15AHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T15AHE3/52?
All SM6T15AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T15AHE3/52, 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 SM6T15AHE3/52 part is unused and in its original packaging.
Return procedure for SM6T15AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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