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Vishay General Semiconductor - Diodes Division SM5S17ATHE3/I
- Part No.:
- SM5S17ATHE3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM5S17ATHE3/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,671
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Product details
Overview
SM5S17ATHE3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AC package, rated for 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 5 mA, 3600 W peak pulse power (10/1000 μs), 130 V clamping voltage at 150 A, and 175 °C junction temperature - designed for automotive load dump protection in engine control units and body electronics.
For engineers reviewing the SM5S17ATHE3/I datasheet, SM5S17ATHE3/I pinout, SM5S17ATHE3/I application, or SM5S17ATHE3/I equivalent, key selection criteria include unidirectional polarity, DO-218AC thermal performance (RθJC = 1.0 °C/W), AEC-Q101 qualification status, ISO7637-2 surge compliance, and HE3 suffix indicating RoHS-compliance and JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability. It operates across -55 °C to +175 °C and delivers 3600 W surge capability under 10/1000 μs waveform while maintaining low leakage (≤10 μA at VWM, ≤15 μA at TJ = 175 °C).
The device features a metal heatsink as anode terminal, enabling efficient thermal dissipation on PCB copper areas. Its DO-218AC package meets UL 94 V-0 flammability rating and supports reflow soldering per J-STD-020 MSL Level 1 (245 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/typ/max) | 18.9 / 19.9 / 20.9 V at 5 mA - precise breakdown threshold ensures reliable overvoltage triggering |
| VC @ IPPM | 130 V at 150 A - clamping voltage limits downstream circuit stress during transients |
| PPPM (10/1000 μs) | 3600 W - enables robust protection against high-energy automotive load dump events |
| TJ max. | +175 °C - supports under-hood operation in modern automotive ECUs and ADAS modules |
| Polarity | Unidirectional - suitable for DC-biased systems where reverse conduction must be blocked |
| RθJC | 1.0 °C/W - allows direct thermal coupling to heatsink pads for sustained power handling |
Pinout & Package
Package: DO-218AC - surface-mount, single-ended anode-heatsink configuration with matte tin-plated leads; compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (Anode) | Anode connection / thermal path | Electrically and thermally connected to metal heatsink; must be routed to large copper pour for thermal management |
| Lead 2 (Cathode) | Cathode connection | Standard cathode terminal; connects to protected line (e.g., battery rail); polarity-sensitive placement required |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift <0.082 %/°C and long-term reliability under thermal cycling |
| TJ = 175 °C capability | Supports placement near high-power components in engine compartments without derating |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade production use with traceable qualification test reports |
| Meets ISO7637-2 surge specification | Passes standardized automotive transient immunity tests including load dump (Pulse 5a/b) |
| MSL Level 1 (245 °C peak) | Allows standard lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Engine Control Unit (ECU) Protection | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power rails and CAN transceivers from alternator load dump transients during ignition cycling. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and LDO/regulator input to clamp surges before they reach sensitive logic. Use Value: Limits clamped voltage to 130 V at 150 A, preventing latch-up or gate oxide damage in 5 V/3.3 V ICs downstream. | Use Scenario: Shields LIN bus interface and window motor drivers from inductive switching spikes in door modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail, absorbing repetitive transients from solenoid actuation and relay bounce. Use Value: Maintains <10 μA leakage at 17 V, minimizing standby current drain in always-on vehicle networks. |
| Advanced Driver Assistance Systems (ADAS) | Infotainment Power Supply |
Use Scenario: Safeguards radar sensor power inputs exposed to harsh under-hood environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary surge suppression element on 12 V input stage of camera/radar ECU, preceding DC/DC converters. Use Value: Sustains operation up to +175 °C junction temperature, eliminating thermal shutdown during prolonged high-load conditions. | Use Scenario: Guards USB-C PD and display power rails against hot-swap and cable-insertion transients in center-stack head units. IC Role / Device Role / Timing Role: Secondary-level TVS on intermediate 5 V/12 V distribution nets, complementing primary front-end protection. Use Value: Delivers 3600 W peak pulse power handling without degradation after repeated 10/1000 μs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM5S17AHM3 | Same electrical specs; HM3 suffix indicates halogen-free molding compound and enhanced moisture resistance | Preferred for new designs targeting extended lifecycle and stricter environmental compliance | Select SM5S17AHM3 when replacing SM5S17ATHE3/I in production ramp or redesign phases |
| SMAJ17A | Lower PPPM (400 W), smaller SMA package (RθJC = 40 °C/W), no AEC-Q101 qualification | Suitable only for non-automotive, lower-energy industrial or consumer applications | Use SMAJ17A only if thermal constraints, cost, or qualification requirements permit reduced surge margin |
Compared with SM5S17ATHE3/I, SM5S17AHM3 offers identical protection performance with improved material sustainability, while SMAJ17A trades significant surge capacity and automotive qualification for compact size and lower cost - making SM5S17ATHE3/I the optimal choice for legacy AEC-Q101-compliant automotive programs requiring proven field reliability.
Availability
SM5S17ATHE3/I is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and ADAS power supply designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM5S17ATHE3/I 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-grade solutions.
The SM5SxxAT family was engineered specifically for automotive load dump and inductive switching transient suppression, delivering high-power surge capability in thermally optimized surface-mount packages for under-hood deployment.
FAQ
What is the clamping voltage of SM5S17ATHE3/I at its rated peak pulse current?
The SM5S17ATHE3/I has a maximum clamping voltage (VC) of 130 V when subjected to its peak pulse current (IPPM) of 150 A under the 10/1000 μs waveform. This value is measured per the manufacturer's test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SM5S17ATHE3/I maintains this clamping performance across its specified operating temperature range, supporting robust system-level protection in automotive applications.
Is SM5S17ATHE3/I qualified to AEC-Q101 standards?
Yes, SM5S17ATHE3/I is AEC-Q101 qualified, as confirmed by the HE3 ordering suffix and documentation in Vishay's official datasheet (Document Number: 87609). The HE3 designation explicitly denotes RoHS compliance, AEC-Q101 qualification, and JESD201 Class 2 whisker resistance. This makes SM5S17ATHE3/I suitable for automotive production applications where component reliability and qualification traceability are mandatory.
What does the "HE3" suffix mean in SM5S17ATHE3/I?
The "HE3" suffix in SM5S17ATHE3/I indicates three key attributes: RoHS-compliant materials, AEC-Q101 qualification, and compliance with JESD201 Class 2 whisker resistance testing. It also confirms that the device uses matte tin-plated leads solderable per J-STD-002 and JESD22-B102. These specifications ensure SM5S17ATHE3/I meets automotive manufacturing and reliability requirements, distinguishing it from non-qualified variants like SM5S17AT.
Can SM5S17ATHE3/I replace SM5S17AHM3 in existing designs?
SM5S17ATHE3/I and SM5S17AHM3 share identical electrical characteristics and DO-218AC mechanical form factor, but differ in material composition: HM3 uses halogen-free molding compound and offers enhanced moisture resistance. While functional replacement is possible, SM5S17ATHE3/I lacks the HM3's environmental compliance upgrades. For new designs or long-term production, SM5S17AHM3 is recommended; SM5S17ATHE3/I remains valid for legacy AEC-Q101-compliant builds where HE3-specified qualification is required.
What is the thermal resistance from junction to case (RθJC) for SM5S17ATHE3/I?
The SM5S17ATHE3/I has a typical thermal resistance from junction to case (RθJC) of 1.0 °C/W, as specified in the Vishay datasheet. This low value reflects the DO-218AC package's integrated metal heatsink (anode terminal), enabling efficient heat transfer to PCB copper areas. Designers must allocate adequate thermal pad area and via stitching to realize this performance - critical for sustaining 5 W power dissipation at TC = 25 °C and managing surge-induced thermal pulses in automotive applications.
SM5S17ATHE3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- 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):
- 130A
- Power - Peak Pulse:
- 3600W (3.6kW)
- 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-218AC
SM5S17ATHE3/I FAQ
1.How can I place an order for SM5S17ATHE3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S17ATHE3/I 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 SM5S17ATHE3/I reliable?
The price and inventory of SM5S17ATHE3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S17ATHE3/I is usually 5 days.
3.What payment methods are accepted for SM5S17ATHE3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S17ATHE3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S17ATHE3/I?
SM5S17ATHE3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S17ATHE3/I 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 SM5S17ATHE3/I?
For technical support, including SM5S17ATHE3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S17ATHE3/I requirements.
6.How does Aetrix verify that SM5S17ATHE3/I is sourced from the original manufacturer or authorized distributors?
All SM5S17ATHE3/I 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 SM5S17ATHE3/I meets industry standards.
7.What is the process for return or replacement of SM5S17ATHE3/I?
All SM5S17ATHE3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S17ATHE3/I, 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 SM5S17ATHE3/I part is unused and in its original packaging.
Return procedure for SM5S17ATHE3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S17ATHE3/I Tags
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