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Vishay General Semiconductor - Diodes Division SM8S15A-002HE3/2D
- Part No.:
- SM8S15A-002HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S15A-002HE3/2D.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
SM8S15A-002HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 16.7 V minimum breakdown voltage (VBR), 15.0 V standoff voltage (VWM), 270 A peak pulse current (IPPM, 10/1000 µs), 24.4 V clamping voltage (VC), and operates up to TJ = 175 °C - enabling robust protection in engine control units and powertrain modules.
For engineers reviewing the SM8S15A-002HE3/2D datasheet, SM8S15A-002HE3/2D pinout, SM8S15A-002HE3/2D application, or SM8S15A-002HE3/2D equivalent, key selection criteria include unidirectional polarity, DO-218AB package thermal performance (RθJC = 0.90 °C/W), ISO7637-2 compliance, AEC-Q101 qualification, and 6600 W peak pulse power handling at 10/1000 µs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low leakage (<10 µA at VWM). Its unidirectional configuration places the heatsink as the anode terminal, enabling direct mounting to PCB copper planes for enhanced thermal dissipation in high-power transients.
The device delivers 6600 W peak pulse power (10/1000 µs) and 5200 W (10/10 000 µs), with clamping performance validated under load dump conditions per ISO7637-2. Its 175 °C junction rating supports under-hood automotive environments without derating up to 125 °C case temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 16.7 V / 18.5 V - ensures reliable triggering above system nominal voltage while avoiding false conduction during normal operation |
| VWM | 15.0 V - maximum continuous reverse operating voltage compatible with 12 V automotive systems |
| IPPM (10/1000 µs) | 270 A - sustains high-energy transients without failure, critical for alternator load dump events |
| VC @ IPPM | 24.4 V - limits downstream voltage stress to safe levels for 16 V-rated ICs and MOSFETs |
| PPPM (10/1000 µs) | 6600 W - enables compact placement near protected circuitry without external heat sinking |
| TJ max. | 175 °C - supports permanent installation in high-ambient under-hood locations |
| RθJC | 0.90 °C/W - allows efficient heat transfer to PCB copper or metal-core substrates |
Pinout & Package
Package: DO-218AB - thermally optimized surface-mount outline with integral metal heatsink (anode) and molded body meeting UL 94 V-0. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102; HE3 suffix indicates JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected line (e.g., battery rail); carries full surge current during clamping |
| Lead 2 / Metal Heatsink | Anode | Must be soldered to large copper pour or thermal pad for effective heat extraction; defines polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| MSL Level 1 (J-STD-020) | Unlimited floor life at ≤30 °C/60 % RH; no bake required before reflow up to 245 °C peak |
| ISO7637-2 compliant | Withstands Pulse 5a (load dump) up to 100 V/10 ms exponential waveform without degradation |
| Low leakage at 175 °C | <10 µA at VWM - prevents excessive quiescent current drain in always-on vehicle modules |
| High surge capability (IFSM) | 700 A (8.3 ms half-sine) - handles repetitive cranking surges and jump-start scenarios |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Protection |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and power regulators from alternator load dump transients during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at main 12 V input connector to clamp overvoltage before it reaches LDOs and DC-DC converters. Use Value: Clamps to 24.4 V within nanoseconds, limiting stress on 28 V-rated downstream components while surviving 6600 W pulses. | Use Scenario: Shields lighting drivers, window motor controllers, and door module logic from battery line transients caused by relay switching and solenoid actuation. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on fused battery feed, mounted adjacent to entry point PCB copper pour. Use Value: Maintains <10 µA leakage at 125 °C ambient, ensuring low standby current in always-on BCM sleep modes. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Supply | Electric Power Steering (EPS) Motor Drive Stage |
Use Scenario: Safeguards image sensor and ISP power rails against coupled transients from nearby high-current actuators in ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary TVS located after front-end filter in camera module's 12 V to 3.3 V supply chain. Use Value: 175 °C rated junction enables operation inside sealed camera housings exposed to direct sunlight and engine radiant heat. | Use Scenario: Protects gate drivers and current sense amplifiers from inductive kickback generated by EPS motor commutation. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed across H-bridge high-side FET source-to-rail path. Use Value: 270 A IPPM capacity absorbs repeated 100–200 A motor current interruptions without parameter shift. |
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-E3/5AT | Lower PPPM (400 W), SMA package, RθJC ≈ 45 °C/W, VC = 24.4 V | Not suitable for load dump; limited to low-energy ESD and inductive spikes | Select only for cost-sensitive non-automotive applications where 6600 W surge immunity is unnecessary |
| TPSMD15A | Same DO-218AB package, 15 V VWM, but lower IPPM (220 A), VC = 24.4 V, not AEC-Q101 qualified | Lacks automotive qualification and ISO7637-2 validation; intended for industrial/commercial use | Acceptable for non-automotive 12 V systems requiring same footprint but not requiring AEC-Q101 or load dump compliance |
Compared with SMAJ15A-E3/5AT and TPSMD15A, SM8S15A-002HE3/2D provides 16.5× higher peak pulse power, certified AEC-Q101 reliability, and validated ISO7637-2 load dump performance - making it the only option among the three qualified for front-end automotive power rail protection.
Availability
SM8S15A-002HE3/2D is available at Aetrix Electronics and suitable for engine control units, body control modules, and advanced driver assistance systems requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SM8S15A-002HE3/2D 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 protection devices with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The SM8SxxA family was engineered specifically for automotive load dump protection, combining high surge capability, AEC-Q101 qualification, and DO-218AB thermal efficiency to replace older axial-leaded and less robust SMC-packaged TVS devices.
FAQ
What is the polarity configuration of SM8S15A-002HE3/2D?
The SM8S15A-002HE3/2D is a unidirectional TVS diode with the metal heatsink serving as the anode terminal and Lead 1 as the cathode. This configuration requires correct PCB layout orientation to ensure proper clamping behavior during positive transients on the protected line. Polarity is fixed and cannot be reversed in circuit operation.
Does SM8S15A-002HE3/2D meet ISO7637-2 Pulse 5a requirements?
Yes, SM8S15A-002HE3/2D is explicitly validated to meet ISO7637-2 Pulse 5a (load dump) under specified test conditions, delivering 6600 W peak pulse power at 10/1000 µs and sustaining 5200 W at 10/10 000 µs. Its 24.4 V clamping voltage ensures protected circuits remain within safe operating limits during standardized load dump events.
What is the thermal resistance and recommended mounting method for SM8S15A-002HE3/2D?
SM8S15A-002HE3/2D has a typical junction-to-case thermal resistance (RθJC) of 0.90 °C/W. To achieve this rating, the metal heatsink (anode) must be soldered to a minimum 100 mm² copper area on the PCB, preferably with multiple thermal vias to inner ground planes. Lead 1 (cathode) should be routed with adequate trace width to handle 270 A surge current.
Is SM8S15A-002HE3/2D RoHS-compliant and halogen-free?
Yes, SM8S15A-002HE3/2D carries the HE3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin-plated per J-STD-002 for lead-free soldering compatibility.
What is the maximum reverse leakage current of SM8S15A-002HE3/2D at elevated temperature?
At TJ = 175 °C and VWM = 15.0 V, the maximum reverse leakage current (ID) for SM8S15A-002HE3/2D is 10 µA. This low leakage ensures minimal impact on battery drain in always-on automotive modules, even under worst-case thermal conditions encountered in under-hood applications.
SM8S15A-002HE3/2D 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:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 270A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
SM8S15A-002HE3/2D FAQ
1.How can I place an order for SM8S15A-002HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S15A-002HE3/2D 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 SM8S15A-002HE3/2D reliable?
The price and inventory of SM8S15A-002HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S15A-002HE3/2D is usually 5 days.
3.What payment methods are accepted for SM8S15A-002HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S15A-002HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S15A-002HE3/2D?
SM8S15A-002HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S15A-002HE3/2D 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 SM8S15A-002HE3/2D?
For technical support, including SM8S15A-002HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S15A-002HE3/2D requirements.
6.How does Aetrix verify that SM8S15A-002HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM8S15A-002HE3/2D 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 SM8S15A-002HE3/2D meets industry standards.
7.What is the process for return or replacement of SM8S15A-002HE3/2D?
All SM8S15A-002HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM8S15A-002HE3/2D, 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 SM8S15A-002HE3/2D part is unused and in its original packaging.
Return procedure for SM8S15A-002HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S15A-002HE3/2D Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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