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Vishay General Semiconductor - Diodes Division SM8S17A-001HE3/2D
- Part No.:
- SM8S17A-001HE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S17A-001HE3/2D.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,142
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Product details
Overview
SM8S17A-001HE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 17.0 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), 239 A peak pulse current (IPPM, 10/1000 μs), 27.6 V clamping voltage (VC), and 6600 W peak pulse power (PPPM, 10/1000 μs). Its DO-218AB package supports high-reliability underhood applications up to TJ = 175 °C.
For engineers reviewing the SM8S17A-001HE3/2D datasheet, SM8S17A-001HE3/2D pinout, SM8S17A-001HE3/2D application, or SM8S17A-001HE3/2D equivalent, key selection criteria include unidirectional polarity, ISO7637-2 compliance, AEC-Q101 qualification, thermal resistance (RθJC = 0.90 °C/W), and low leakage (ID ≤ 10 μA at VWM).
Technical Context
The SM8S17A-001HE3/2D employs passivated anisotropic rectifier technology optimized for junction stability at TJ = 175 °C. Its unidirectional architecture uses the metal heatsink as anode, enabling robust surge handling during automotive load dump events with 10 ms exponential waveforms.
It delivers 6600 W peak pulse power under 10/1000 μs conditions and maintains ≤10 μA reverse leakage at VWM up to 175 °C. The device meets MSL Level 1 per J-STD-020 and passes JESD201 Class 2 whisker testing due to matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown occurs within this range at IT = 5.0 mA, ensuring predictable turn-on |
| VC @ IPPM | 27.6 V - Clamped voltage at 239 A peak pulse, limiting downstream voltage stress |
| PPPM (10/1000 μs) | 6600 W - Sustains high-energy transients typical of 12 V automotive load dump |
| RθJC | 0.90 °C/W - Enables efficient heat transfer to PCB/heatsink for thermal reliability at TC = 25 °C |
| ID @ VWM, TJ = 175 °C | ≤10 μA - Low leakage preserves system standby current in high-temp environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: DO-218AB - Surface-mount, anode-connected metal heatsink case with UL 94 V-0 molding compound; terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected circuit node; carries clamped surge current to ground path |
| Lead 2 / Metal Heatsink | Anode | Primary thermal and electrical connection point; must be soldered to large copper area for RθJC performance |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over lifetime at TJ = 175 °C |
| ISO7637-2 compliance | Validated for automotive load dump immunity using 10 ms exponential waveform per specification |
| MSL Level 1 | Reflow-compatible up to 245 °C peak without moisture sensitivity concerns |
| JESD201 Class 2 whisker resistance | Matte tin plating prevents tin whisker growth in long-term automotive deployments |
| Uni-directional polarity | Enables precise placement with anode-to-ground configuration for DC bus protection |
Applications
| Automotive Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting microcontroller I/O and power supply rails from alternator load dump surges during battery disconnect. IC Role / Device Role: Primary clamping element on 12 V main rail, placed upstream of DC/DC converters and LDOs. Use Value: Limits transient voltage to ≤27.6 V at 239 A, preventing latch-up or damage to downstream 3.3 V/5 V logic. |
Use Scenario: Safeguarding LIN bus transceivers and sensor interfaces against coupled transients from window motor or seat actuator switching. IC Role / Device Role: Local TVS at module input connector, shunting induced energy directly to chassis ground. Use Value: Maintains ≤10 μA leakage at 17.0 V VWM across temperature, preserving low-power sleep mode integrity. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Control Unit |
Use Scenario: Shielding image sensor power and MIPI interface lines from ignition noise and ESD coupling in front-end camera assemblies. IC Role / Device Role: Secondary-level protection after primary fuse and common-mode choke, targeting fast-rising transients. Use Value: Achieves 27.6 V clamping at 10/1000 μs, reducing risk of pixel corruption or frame loss during engine cranking. |
Use Scenario: Suppressing inductive kickback from three-phase motor drivers during fault shutdown or regenerative braking. IC Role / Device Role: High-power TVS on motor phase inputs and 12 V auxiliary supply, mounted on heatsinked copper pour. Use Value: Handles 6600 W peak pulse power with RθJC = 0.90 °C/W, sustaining operation under repeated 150 °C ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ17A | Same VWM (17.0 V), lower PPPM (400 W), DO-214AC package, RθJC ≈ 35 °C/W | Not rated for AEC-Q101 or ISO7637-2; limited to non-automotive industrial use | Select when cost-sensitive, non-automotive designs require basic 17 V clamping with lower surge demand |
| ON Semiconductor 1.5SMC17A | Same VWM (17.0 V), higher VC (33.2 V), DO-214AB package, PPPM = 1500 W, no AEC-Q101 | Higher clamping voltage increases downstream component stress; not qualified for automotive temperature cycling | Choose only for legacy industrial systems where 33.2 V clamping is acceptable and AEC-Q101 is not required |
Compared with SMAJ17A and 1.5SMC17A, the SM8S17A-001HE3/2D provides 16.5× higher peak pulse power, 0.90 °C/W thermal resistance versus >35 °C/W, and full AEC-Q101/ISO7637-2 validation-making it uniquely suitable for underhood automotive electronics requiring sustained 175 °C operation and load dump immunity.
Availability
SM8S17A-001HE3/2D is available at Aetrix Electronics and suitable for automotive ECU protection, body control modules, ADAS camera power rails, and electric power steering systems requiring stable component supply across extended temperature and high-surge environments.
Supply support for SM8S17A-001HE3/2D 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM8SxxA family is engineered specifically for automotive load dump and ISO7637-2 transient suppression, emphasizing high-temperature junction stability (TJ = 175 °C), low leakage, and robust surge capability in the DO-218AB package.
FAQ
What is the maximum operating junction temperature for SM8S17A-001HE3/2D?
The SM8S17A-001HE3/2D is rated for a maximum junction temperature of +175 °C, validated per AEC-Q101 stress testing. This enables reliable operation in underhood automotive locations where ambient temperatures exceed 125 °C. Thermal design must maintain RθJC ≤ 0.90 °C/W via adequate heatsinking to avoid exceeding TJ max during 6600 W surge events.
Is SM8S17A-001HE3/2D compliant with automotive industry standards?
Yes, the SM8S17A-001HE3/2D is AEC-Q101 qualified and meets ISO7637-2 surge requirements for automotive load dump protection. It also complies with J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance, confirming suitability for automotive production environments.
What does the "HE3/2D" suffix indicate in SM8S17A-001HE3/2D?
The HE3 suffix denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads passing JESD201 Class 2 whisker testing. The /2D indicates packaging in 13" diameter plastic tape and reel, with 750 units per reel and anode oriented toward the sprocket hole.
How does the DO-218AB package of SM8S17A-001HE3/2D improve thermal performance?
The DO-218AB package integrates a large metal heatsink as the anode terminal, enabling direct thermal conduction to PCB copper planes. With a typical RθJC of 0.90 °C/W, it dissipates heat far more effectively than standard SMC or DO-214AB packages, supporting sustained high-power surge handling at elevated ambient temperatures.
What is the clamping voltage of SM8S17A-001HE3/2D at its rated peak pulse current?
The SM8S17A-001HE3/2D clamps to a maximum of 27.6 V at its specified peak pulse current of 239 A (10/1000 μs waveform). This value is guaranteed across temperature and ensures downstream components experience controlled overvoltage stress during transient events.
SM8S17A-001HE3/2D 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 239A
- 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
SM8S17A-001HE3/2D FAQ
1.How can I place an order for SM8S17A-001HE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S17A-001HE3/2D 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 SM8S17A-001HE3/2D reliable?
The price and inventory of SM8S17A-001HE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S17A-001HE3/2D is usually 5 days.
3.What payment methods are accepted for SM8S17A-001HE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S17A-001HE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S17A-001HE3/2D?
SM8S17A-001HE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S17A-001HE3/2D 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 SM8S17A-001HE3/2D?
For technical support, including SM8S17A-001HE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S17A-001HE3/2D requirements.
6.How does Aetrix verify that SM8S17A-001HE3/2D is sourced from the original manufacturer or authorized distributors?
All SM8S17A-001HE3/2D 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 SM8S17A-001HE3/2D meets industry standards.
7.What is the process for return or replacement of SM8S17A-001HE3/2D?
All SM8S17A-001HE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM8S17A-001HE3/2D, 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 SM8S17A-001HE3/2D part is unused and in its original packaging.
Return procedure for SM8S17A-001HE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S17A-001HE3/2D Tags
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