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Vishay General Semiconductor - Diodes Division SM5S17AHE3_A/I
- Part No.:
- SM5S17AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM5S17AHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,013
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Product details
Overview
SM5S17AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, designed for automotive load dump protection with 17.0 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), and 3600 W peak pulse power (10/1000 μs). It operates up to 175 °C junction temperature and is AEC-Q101 qualified.
For engineers reviewing the SM5S17AHE3_A/I datasheet, SM5S17AHE3_A/I pinout, SM5S17AHE3_A/I application, or SM5S17AHE3_A/I equivalent, key selection criteria include clamping voltage (27.6 V at IPPM), low leakage (<10 μA at VWM), high surge current capability (150 A), and compliance with ISO7637-2 for automotive transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance under high-temperature stress (TJ = 175 °C) and repetitive surge conditions. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to thermal planes for efficient heat dissipation in automotive power rails.
The device meets MSL Level 1 per J-STD-020 (245 °C peak reflow), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing - confirming suitability for high-reliability automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 12 V automotive nominal) |
| VBR (min/typ/max) | 18.9 / 19.9 / 20.9 V at 5 mA - precise breakdown threshold ensures predictable turn-on during transients |
| VC @ IPPM | 27.6 V - clamping voltage at 150 A (10/1000 μs); limits downstream IC stress during load dump events |
| PPPM (10/1000 μs) | 3600 W - peak surge energy handling capacity; supports ISO7637-2 Pulse 5a/b load dump waveforms |
| TJ max. | +175 °C - enables operation in engine bay environments without derating in compact layouts |
| Leakage @ VWM | <10 μA at 25 °C - minimizes standby power loss in always-on vehicle modules |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, HAST, and UHAST |
Pinout & Package
Package: DO-218AB - thermally enhanced surface-mount case with metal heatsink acting as anode terminal; UL 94 V-0 molding compound; footprint per IPC-7351.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (cathode) | Transient current sink | Connected to protected line (e.g., battery rail); carries full surge current during clamping |
| Lead 2 / Metal heatsink (anode) | Common reference & thermal path | Must be soldered to large copper pour for RθJM = 0.45 °C/W; serves as primary ground return and heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR over lifetime and temperature; eliminates parametric drift in harsh automotive environments |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 245 °C peak - no moisture sensitivity handling required |
| Low forward voltage drop | VF ≤ 2.0 V at 100 A (300 μs pulse) - reduces conduction loss during high-current surges |
| ISO7637-2 compliance | Validated for Pulse 5a (load dump) per test condition - meets OEM-level transient immunity requirements |
| RoHS & halogen-free (E3) | Meets global environmental regulations without compromising thermal or electrical performance |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects ECU microcontroller and CAN transceivers from 12 V battery rail transients during alternator load dump. IC Role / Device Role: Primary clamping element placed between battery input and DC/DC converter input stage. Use Value: Limits voltage to ≤27.6 V during 3600 W surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Shields BCM power management ICs from switching noise and load dump in door module, lighting, and HVAC circuits. IC Role / Device Role: Unidirectional TVS mounted directly on main 12 V input trace with heatsink tied to chassis ground plane. Use Value: Achieves RθJM = 0.45 °C/W via metal heatsink soldering, enabling sustained operation at TJ = 175 °C in sealed enclosures. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and ISP power rails against coupled transients from nearby solenoid actuators and LIN bus noise. IC Role / Device Role: Secondary protection stage after upstream fuse and common-mode choke; placed adjacent to camera module connector. Use Value: Sub-10 μA leakage preserves low-power sleep mode integrity; ±5 % VBR tolerance ensures consistent clamping across production lots. |
Use Scenario: Suppresses inductive kickback from H-bridge motor windings during PWM commutation and emergency stop events. IC Role / Device Role: High-energy TVS connected between motor supply rail and chassis ground, leveraging DO-218AB heatsink for thermal robustness. Use Value: Withstands 500 A IFSM (8.3 ms half-sine), surviving repeated motor stall conditions without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM5S17AHM3_A/I | Same electrical specs and DO-218AB package; HM3 suffix indicates enhanced material set with improved long-term stability under thermal cycling | Preferred for new designs targeting >15-year automotive service life; not subject to "Not For New Designs" status | Select SM5S17AHM3_A/I when designing for production beyond 2026 or requiring extended qualification evidence per AEC-Q101 Rev D |
| SMAJ17A | Lower PPPM (400 W), SMA package (RθJA ≈ 100 °C/W), no AEC-Q101 qualification, higher VBR tolerance (±10 %) | Suitable only for non-automotive industrial or consumer applications with lower surge severity and ambient temperature limits | Use SMAJ17A only in cost-sensitive, non-automotive designs where 3600 W surge immunity and 175 °C operation are not required |
Compared with SM5S17AHE3_A/I, SM5S17AHM3_A/I offers identical clamping performance with superior long-term reliability validation, while SMAJ17A provides basic protection at reduced cost and thermal capability - making it unsuitable for automotive load dump duty cycles.
Availability
SM5S17AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, body control module design, and ADAS camera power conditioning requiring stable component supply and AEC-Q101 compliance.
Supply support for SM5S17AHE3_A/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SM5SxxA series is part of Vishay's PAR® TVS platform, engineered specifically for automotive-grade transient suppression in 12 V and 24 V systems - emphasizing thermal robustness, ISO7637-2 compliance, and AEC-Q101 qualification.
FAQ
What is the clamping voltage of SM5S17AHE3_A/I at its rated peak pulse current?
The SM5S17AHE3_A/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its peak pulse current (IPPM) of 150 A under the 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case transients such as automotive load dump. The SM5S17AHE3_A/I maintains this clamping performance across its full operating temperature range due to its passivated junction design.
Is SM5S17AHE3_A/I suitable for new automotive designs?
No - the SM5S17AHE3_A/I is marked "Not For New Designs" in Vishay's official documentation (Doc. #88382, Rev. 10-Feb-2026), with SM5S17AHM3_A/I designated as the recommended alternative. While SM5S17AHE3_A/I remains available and fully functional, new designs should use SM5S17AHM3_A/I to ensure long-term supply continuity and access to updated qualification data aligned with latest AEC-Q101 revisions.
How is the anode terminal configured on SM5S17AHE3_A/I?
On the SM5S17AHE3_A/I in DO-218AB package, the metal heatsink forms the anode terminal (Lead 2), while Lead 1 is the cathode. This configuration requires the heatsink to be soldered to a large copper area serving as both the circuit ground reference and primary thermal path. The anode-heatsink layout enables RθJM = 0.45 °C/W, critical for sustaining 175 °C junction temperature during repeated surge events.
Does SM5S17AHE3_A/I meet ISO7637-2 requirements?
Yes - the SM5S17AHE3_A/I is specified to meet ISO7637-2 surge requirements, particularly Pulse 5a (load dump), under defined test conditions. Its 3600 W peak pulse power rating (10/1000 μs), 27.6 V clamping voltage, and 150 A IPPM align with the energy and voltage limits of ISO7637-2 Pulse 5 waveforms. System-level validation per vehicle manufacturer specifications is still required, but the SM5S17AHE3_A/I provides the foundational component-level compliance.
What is the maximum leakage current of SM5S17AHE3_A/I at its stand-off voltage?
The SM5S17AHE3_A/I exhibits a maximum reverse leakage current (ID) of 10 μA at its stand-off voltage (VWM) of 17.0 V and ambient temperature of 25 °C. At elevated junction temperature (TJ = 175 °C), leakage increases to ≤15 μA - still within acceptable limits for always-on automotive modules. This low leakage preserves battery runtime in sleep-mode vehicle networks without compromising transient response speed.
SM5S17AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-218AB
SM5S17AHE3_A/I FAQ
1.How can I place an order for SM5S17AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM5S17AHE3_A/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 SM5S17AHE3_A/I reliable?
The price and inventory of SM5S17AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM5S17AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM5S17AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM5S17AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM5S17AHE3_A/I?
SM5S17AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM5S17AHE3_A/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 SM5S17AHE3_A/I?
For technical support, including SM5S17AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM5S17AHE3_A/I requirements.
6.How does Aetrix verify that SM5S17AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM5S17AHE3_A/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 SM5S17AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM5S17AHE3_A/I?
All SM5S17AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM5S17AHE3_A/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 SM5S17AHE3_A/I part is unused and in its original packaging.
Return procedure for SM5S17AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM5S17AHE3_A/I Tags
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