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Vishay General Semiconductor - Diodes Division SM6S15HE3/2D
- Part No.:
- SM6S15HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S15HE3/2D.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,381
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Product details
Overview
SM6S15HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 15 V stand-off voltage (VWM), 17.6 V nominal breakdown voltage (VBR), 4600 W peak pulse power (10/1000 μs), and 175 °C junction temperature - designed for automotive load dump protection in engine control units and body electronics.
For engineers reviewing the SM6S15HE3/2D datasheet, SM6S15HE3/2D pinout, SM6S15HE3/2D application, or SM6S15HE3/2D equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance values, clamping behavior under surge, and direct alternative part guidance for legacy design continuity.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve low leakage (<10 μA at VWM) and low forward voltage drop (≤1.9 V at 100 A), enabling robust clamping during high-energy transients. Its DO-218AB package features a metal heatsink acting as the anode terminal, supporting efficient thermal dissipation with RθJM = 0.45 °C/W.
The device meets ISO 7637-2 load dump requirements and is qualified to AEC-Q101 for automotive use. It operates across -55 °C to +175 °C, with temperature coefficient of VBR at +0.080 %/°C - critical for stable clamping performance under under-hood thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - maximum continuous reverse operating voltage before conduction begins; sets system-level overvoltage trip threshold. |
| VBR (nom) | 17.6 V - nominal breakdown voltage at 5 mA test current; defines onset of avalanche clamping action. |
| VC @ IPPM | 24.4 V - maximum clamping voltage at 189 A peak pulse current (10/1000 μs); determines protected circuit's worst-case transient exposure. |
| PPPM (10/1000 μs) | 4600 W - peak pulse power handling capability; supports high-energy automotive load dump events per ISO 7637-2. |
| TJ max | +175 °C - maximum junction temperature rating; enables placement near high-heat sources in engine compartments. |
| RθJM | 0.45 °C/W - junction-to-mount thermal resistance; confirms effective heat transfer to PCB copper or heatsink plane. |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD; required for OEM Tier 1 supply chains. |
Pinout & Package
Package: DO-218AB - molded surface-mount case with integral metal heatsink (anode terminal), UL 94 V-0 rated, matte tin-plated leads, JESD 201 Class 2 whisker compliant, MSL Level 1 (245 °C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (Anode) | Anode connection | Primary current entry point during clamping; electrically tied to metal heatsink base for low-inductance path and thermal conduction. |
| Lead 2 / Metal Heatsink | Anode (same node) | Shared anode node with Lead 1; serves dual role as electrical connection and primary thermal interface to PCB copper pour or heatsink. |
| Cathode (marked end) | Cathode connection | Reverse-biased terminal during normal operation; conducts surge current to ground when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift <±5 % over lifetime and temperature. |
| High-temperature operation | Rated for continuous operation up to TJ = +175 °C - eliminates derating concerns in under-hood automotive modules. |
| Low leakage at VWM | ≤10 μA at 15 V and 25 °C - minimizes standby power loss in always-on vehicle networks (e.g., CAN wake-up circuits). |
| ISO 7637-2 compliance | Validated for load dump waveforms (10 ms exponential) - directly supports OEM requirements for 12 V and 24 V systems. |
| Unidirectional polarity | Single-anode/cathode configuration - simplifies PCB layout vs. bidirectional devices; avoids false triggering on DC bias. |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) LIN Bus Line Protection |
|---|---|
Use Scenario: Protects 12 V power rail of engine control units against alternator load dump surges up to 35 V and 4600 W. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamps transient overvoltage within nanoseconds, diverting surge current to ground before downstream regulators fail. Use Value: Prevents latch-up or permanent damage to MCU power supplies and analog front-ends during cold-cranking and battery disconnection events. |
Use Scenario: Shields LIN transceiver I/O lines from coupled transients induced by nearby solenoid switching in door modules or seat controls. IC Role / Device Role / Timing Role: Fast-response TVS limits voltage excursion to <24.4 V during 10/1000 μs pulses, preserving signal integrity on 19.2 kbps serial bus. Use Value: Maintains communication uptime without requiring external series resistors or RC filters that degrade edge rate or increase BOM count. |
| Automotive Lighting Driver Output Protection | ADAS Camera Power Rail Clamping |
Use Scenario: Installed across output of LED driver ICs powering headlamps or DRLs, absorbing inductive kickback from PWM-controlled MOSFETs. IC Role / Device Role / Timing Role: Absorbs repetitive 600 A IFSM surges (8.3 ms half-sine) without degradation, maintaining clamping stability over 100k+ cycles. Use Value: Extends LED driver lifetime by preventing gate oxide stress and overvoltage failure in high-side switch FETs. |
Use Scenario: Placed at 5 V or 3.3 V power input of camera modules in rear-view or surround-view systems exposed to EMI from adjacent radar or infotainment RF sources. IC Role / Device Role / Timing Role: Suppresses sub-100 ns fast transients with <24.4 V clamping, ensuring clean power delivery to image sensor and ISP ASICs. Use Value: Eliminates frame corruption or reset events caused by power rail disturbance, meeting ASIL-B functional safety constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S15AHM3 | Same VWM/VBR/PPPM specs; HM3 suffix indicates halogen-free, RoHS-compliant, AEC-Q101 qualified variant with improved moisture sensitivity level (MSL 1) and whisker resistance. | Identical automotive use cases; preferred for new designs due to updated environmental compliance and long-term availability roadmap. | Select SM6S15AHM3 for new designs requiring full halogen-free compliance and extended lifecycle support beyond SM6S15HE3/2D. |
| SMAJ15A | Lower PPPM (400 W vs. 4600 W), smaller SMA package (DO-214AC), higher RθJA (85 °C/W), same unidirectional polarity and AEC-Q101 qualification. | Suitable only for low-energy transients (e.g., ESD, board-level coupling); not rated for ISO 7637-2 load dump. | Use SMAJ15A only in non-load-dump applications where space is constrained and surge energy remains below 400 W. |
Compared with SM6S15HE3/2D, SM6S15AHM3 offers identical protection performance with enhanced environmental compliance and longer-term supply assurance, while SMAJ15A provides compact footprint at the cost of 91 % lower surge capacity - making it unsuitable for primary automotive power rail protection.
Availability
SM6S15HE3/2D is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit hardening, and body electronics surge suppression requiring stable component supply across extended temperature ranges and high-reliability validation.
Supply support for SM6S15HE3/2D 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, TVS devices, and power MOSFETs for automotive, industrial, and computing markets.
The SM6SxxA family was engineered specifically for high-energy automotive transient suppression, emphasizing AEC-Q101 reliability, DO-218AB thermal performance, and ISO 7637-2 compliance - targeting under-hood ECUs and safety-critical subsystems.
FAQ
What is the clamping voltage of the SM6S15HE3/2D at its rated peak pulse current?
The SM6S15HE3/2D has a maximum clamping voltage (VC) of 24.4 V at its specified peak pulse current (IPPM) of 189 A under a 10/1000 μs waveform. This value is measured at TC = 25 °C and represents the upper limit of voltage seen by protected circuitry during a standardized surge event. The SM6S15HE3/2D maintains this clamping performance across its full operating temperature range, with minimal variation due to its +0.080 %/°C VBR temperature coefficient.
Is the SM6S15HE3/2D qualified for automotive applications?
Yes, the SM6S15HE3/2D is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units and body electronics. It meets ISO 7637-2 load dump requirements and is rated for operation from -55 °C to +175 °C. The HE3 suffix confirms RoHS compliance, matte tin plating, and JESD 201 Class 2 whisker resistance - all mandatory for Tier 1 automotive supply chains. The SM6S15HE3/2D documentation states it is "Not For New Designs," but remains fully qualified and supported for legacy program continuity.
What does the "HE3/2D" suffix mean in SM6S15HE3/2D?
The "HE3" suffix in SM6S15HE3/2D denotes RoHS-compliant, halogen-free construction with matte tin-plated leads and JESD 201 Class 2 whisker resistance; "2D" is the revision code indicating the specific manufacturing lot and traceability version per Vishay's internal documentation. This suffix aligns with Vishay's ordering nomenclature where "H" = AEC-Q101 qualified, "E3" = non-halogen, lead-free termination, and "2D" reflects the revision level documented in datasheet revision 06-Feb-2026. The SM6S15HE3/2D is functionally identical to SM6S15AHE3 with revision-specific process controls.
Can the SM6S15HE3/2D replace the SM6S15A in existing designs?
Yes, the SM6S15HE3/2D is a direct replacement for SM6S15A in existing designs, sharing identical electrical specifications (VWM = 15 V, VBR = 16.7–18.5 V, VC = 24.4 V), DO-218AB package, and pinout. The HE3/2D variant adds RoHS compliance, AEC-Q101 qualification, and enhanced reliability testing - all backward-compatible. No PCB layout or schematic changes are needed when migrating from SM6S15A to SM6S15HE3/2D, and the SM6S15HE3/2D maintains full compatibility with existing reflow profiles and assembly processes.
What is the thermal resistance from junction to mount for the SM6S15HE3/2D?
The SM6S15HE3/2D has a typical junction-to-mount thermal resistance (RθJM) of 0.45 °C/W, measured using JEDEC® 51-14 Transient Dual Interface Method. This low value reflects the DO-218AB package's integrated metal heatsink, which provides a direct thermal path from the silicon die to the PCB copper pour or external heatsink. When mounted on a 2 oz. FR4 board with adequate copper area, the SM6S15HE3/2D achieves reliable thermal performance even under sustained 6 W power dissipation - critical for high-temperature automotive environments.
SM6S15HE3/2D 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM6S15HE3/2D FAQ
1.How can I place an order for SM6S15HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S15HE3/2D 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 SM6S15HE3/2D reliable?
The price and inventory of SM6S15HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S15HE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S15HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S15HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S15HE3/2D?
SM6S15HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S15HE3/2D 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 SM6S15HE3/2D?
For technical support, including SM6S15HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S15HE3/2D requirements.
6.How does Aetrix verify that SM6S15HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S15HE3/2D 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 SM6S15HE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S15HE3/2D?
All SM6S15HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S15HE3/2D, 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 SM6S15HE3/2D part is unused and in its original packaging.
Return procedure for SM6S15HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S15HE3/2D Tags
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