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Vishay General Semiconductor - Diodes Division SM6S15-E3/2D
- Part No.:
- SM6S15-E3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S15-E3/2D.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
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Product details
Overview
SM6S15-E3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive load dump protection. It features a 15.0 V stand-off voltage (VWM), 16.7–20.4 V breakdown range (VBR), 26.9 V clamping voltage at 171 A peak pulse current, 4600 W peak pulse power (10/1000 µs), and operates up to 175 °C junction temperature in the DO-218AB package.
For engineers reviewing the SM6S15-E3/2D datasheet, SM6S15-E3/2D pinout, SM6S15-E3/2D application, or SM6S15-E3/2D equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, ISO7637-2 compliance for load dump transients, low leakage (<10 µA at VWM), and thermal resistance of 0.95 °C/W (junction-to-case).
Technical Context
The SM6S15-E3/2D uses passivated anisotropic rectifier technology optimized for high-temperature reliability and surge robustness. Its unidirectional structure places the heatsink as the anode terminal, enabling efficient thermal conduction during high-energy transients like automotive load dump events.
It delivers 4600 W peak pulse power under 10/1000 µs waveform and maintains stable clamping performance across -55 °C to +175 °C operating range. The device meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 16.7 V / 20.4 V - Breakdown occurs within this range at 5 mA test current |
| VC @ IPPM | 26.9 V - Clamps transients to ≤26.9 V at 171 A peak pulse current |
| PPPM (10/1000 µs) | 4600 W - Sustains high-energy surges typical of ISO7637-2 load dump tests |
| TJ max | +175 °C - Enables use in under-hood automotive environments without derating |
| RθJC | 0.95 °C/W - Low thermal resistance supports direct mounting to heatsink for reliable power dissipation |
| ID @ VWM | <10 µA - Ensures minimal standby power loss in always-on vehicle systems |
Pinout & Package
Package: DO-218AB - molded surface-mount case with metal heatsink cathode-side termination; UL 94 V-0 rated; anode lead (Lead 1) and metal heatsink (Lead 2) serve as electrical terminals and thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Connects to protected line (e.g., battery rail); forward-biased during overvoltage clamping |
| Lead 2 / Metal Heatsink | Cathode | Primary thermal interface and electrical return; must be soldered to copper pour for effective heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| ISO7637-2 compliant | Withstands standardized automotive load dump pulses (10 ms exponential) up to 3600 W |
| MSL Level 1 | Reflow-compatible up to 245 °C peak without moisture-induced failure |
| Junction temp = 175 °C | Eliminates need for external derating in high-ambient under-hood applications |
| Low RθJC = 0.95 °C/W | Enables >90% of rated power dissipation via PCB copper, reducing heatsink dependency |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting 12 V vehicle electronics against alternator load dump transients up to 40 V and 100 ms duration. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and downstream regulator input. Use Value: Clamps transients to 26.9 V while absorbing 4600 W, preventing damage to LDOs and microcontrollers. | Use Scenario: Safeguarding ECU main power supply during ignition cycling and generator field collapse events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the 12 V input stage before DC/DC conversion. Use Value: Maintains operation at TJ = 175 °C and ensures <10 µA leakage preserves sleep-mode current budget. |
| Body Control Module (BCM) Interface | ADAS Camera Power Rail |
Use Scenario: Shielding BCM LIN/CAN power domains from coupled transients during relay switching. IC Role / Device Role / Timing Role: Localized TVS on fused 12 V feed to interface ICs and driver circuits. Use Value: Fast response (<1 ns) and low clamping voltage prevent latch-up in sensitive communication transceivers. | Use Scenario: Securing 12 V input to image sensor modules exposed to vibration-induced arcing in rearview cameras. IC Role / Device Role / Timing Role: First-line transient suppression before buck converter and sensor bias circuitry. Use Value: DO-218AB package provides mechanical robustness and thermal coupling to chassis ground plane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A | Lower PPPM (400 W), SMA package, 15 V VWM, bidirectional option available | Not AEC-Q101 qualified; unsuitable for automotive under-hood deployment | Select only for cost-sensitive non-automotive industrial controls with lower surge requirements |
| TPSMD15A | Same VWM/VC, but 3000 W PPPM (10/1000 µs), DO-214AB package, AEC-Q101 qualified | Lower surge rating limits use in severe load dump scenarios per ISO7637-2 Pulse 5a | Prefer where board space allows larger footprint and full AEC-Q101 compliance is required but 4600 W is not mandatory |
Compared with SMAJ15A-E3/5A and TPSMD15A, the SM6S15-E3/2D uniquely combines AEC-Q101 qualification, 4600 W surge capability, and DO-218AB thermal performance-making it the only choice for high-reliability automotive load dump protection where both power density and junction temperature margin are critical.
Availability
SM6S15-E3/2D is available at Aetrix Electronics and suitable for automotive load dump protection, engine control unit (ECU) power input, and body control module (BCM) interface applications requiring stable component supply and long-term production continuity.
Supply support for SM6S15-E3/2D 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 TVS devices with emphasis on reliability, thermal performance, and automotive qualification.
The SM6S series belongs to Vishay's PAR® (Passivated Anisotropic Rectifier) platform, engineered specifically for high-energy transient suppression in harsh automotive environments where sustained 175 °C operation and ISO7637-2 compliance are mandatory.
FAQ
What is the clamping voltage of the SM6S15-E3/2D at its rated peak pulse current?
The SM6S15-E3/2D clamps to a maximum of 26.9 V at its specified peak pulse current of 171 A under the 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88384) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6S15-E3/2D achieves this clamping performance while maintaining unidirectional polarity and AEC-Q101 qualification.
Is the SM6S15-E3/2D suitable for automotive under-hood applications?
Yes, the SM6S15-E3/2D is explicitly qualified to AEC-Q101 and rated for continuous operation up to +175 °C junction temperature-making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its DO-218AB package and 0.95 °C/W thermal resistance enable effective heat transfer to the PCB, and the SM6S15-E3/2D meets ISO7637-2 load dump requirements without derating.
What does the "-E3/2D" suffix indicate in SM6S15-E3/2D?
The "-E3" suffix denotes RoHS-compliant, matte tin-plated leads meeting JESD201 Class 2 whisker resistance and J-STD-002 solderability standards. The "/2D" indicates packaging in 13-inch plastic tape and reel with 750 units per reel and anode orientation toward the sprocket hole. This full designation confirms the SM6S15-E3/2D is the standard AEC-Q101 qualified version supplied in automated assembly-ready format.
How does the SM6S15-E3/2D differ from the SM6S15A variant?
The SM6S15-E3/2D has a wider breakdown voltage range (16.7–20.4 V) versus the SM6S15A (16.7–18.5 V), resulting in higher maximum clamping voltage (26.9 V vs. 24.4 V) and slightly lower peak pulse current (171 A vs. 189 A). Both share identical VWM (15.0 V), package (DO-218AB), and AEC-Q101 qualification. Designers select the SM6S15-E3/2D when broader VBR tolerance is acceptable and higher surge margin is prioritized.
Can the SM6S15-E3/2D replace SMAJ15A in existing designs?
No, the SM6S15-E3/2D is not a drop-in replacement for SMAJ15A due to different packages (DO-218AB vs. SMA), thermal design requirements, and surge ratings (4600 W vs. 400 W). While both have 15 V VWM, the SM6S15-E3/2D requires revised PCB layout for heatsink attachment and supports far higher energy transients. Migration to SM6S15-E3/2D demands validation of thermal performance and clamping behavior in the target application.
SM6S15-E3/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 171A
- Power - Peak Pulse:
- 4600W (4.6kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM6S15-E3/2D FAQ
1.How can I place an order for SM6S15-E3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S15-E3/2D 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 SM6S15-E3/2D reliable?
The price and inventory of SM6S15-E3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S15-E3/2D is usually 5 days.
3.What payment methods are accepted for SM6S15-E3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S15-E3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S15-E3/2D?
SM6S15-E3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S15-E3/2D 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 SM6S15-E3/2D?
For technical support, including SM6S15-E3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S15-E3/2D requirements.
6.How does Aetrix verify that SM6S15-E3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S15-E3/2D 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 SM6S15-E3/2D meets industry standards.
7.What is the process for return or replacement of SM6S15-E3/2D?
All SM6S15-E3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S15-E3/2D, 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 SM6S15-E3/2D part is unused and in its original packaging.
Return procedure for SM6S15-E3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S15-E3/2D Tags
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