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Vishay General Semiconductor - Diodes Division SM6S17AHE3/2D
- Part No.:
- SM6S17AHE3/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S17AHE3/2D.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,712
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Product details
Overview
SM6S17AHE3/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 17 V stand-off voltage (VWM), 19.9 V nominal breakdown (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 SM6S17AHE3/2D datasheet, SM6S17AHE3/2D pinout, SM6S17AHE3/2D application, or SM6S17AHE3/2D equivalent, key selection criteria include unidirectional clamping behavior, AEC-Q101 qualification, ISO7637-2 compliance, low leakage (<10 μA at VWM), and thermal resistance RθJM = 0.45 °C/W for high-reliability under-hood deployment.
Technical Context
The SM6S17AHE3/2D uses passivated anisotropic rectifier technology to achieve stable clamping across -55 °C to +175 °C operating range. Its DO-218AB package integrates a metal heatsink as anode terminal, enabling direct PCB thermal coupling and supporting 600 A IFSM surge current with 1.9 V forward voltage at 100 A.
It delivers 27.6 V maximum clamping voltage (VC) at rated IPPM, with ±5 % VBR tolerance and 0.082 %/°C temperature coefficient - optimized for deterministic overvoltage response in 12 V automotive systems subject to load dump transients per ISO7637-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (nom) | 19.9 V at 5 mA - precise breakdown threshold ensuring early transient response |
| VC (max) | 27.6 V at IPPM - limits downstream IC stress during 4600 W surge events |
| PPPM (10/1000 μs) | 4600 W - sustains high-energy transients without failure in automotive load dump |
| TJ max | +175 °C - enables placement near hot engine compartments without derating |
| RθJM | 0.45 °C/W - low junction-to-mount thermal resistance for efficient heat transfer to heatsink |
| ID (max @ VWM) | 10 μA - minimal leakage preserves battery life in always-on vehicle modules |
Pinout & Package
Package: DO-218AB - surface-mount, anode-heatsink configuration with matte tin-plated leads, UL 94 V-0 molding compound, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current entry point during clamping; thermally coupled to PCB copper | Primary thermal path - must be soldered to ≥200 mm² copper pour for RθJM spec compliance |
| Cathode (Lead 1) | Current exit point during clamping; connected to protected line | Signal-side connection - routed with minimal trace inductance to reduce overshoot |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JEDEC standards |
| ISO7637-2 compliant | Withstands load dump pulses up to 35 V × 400 ms without degradation |
| MSL Level 1 | Reflow-compatible at 245 °C peak without moisture-induced popcorning |
| Junction passivation | Stable VBR drift <±5 % over 1000 hrs at TJ = 150 °C ensures long-term clamping accuracy |
| Unidirectional polarity | Prevents reverse-bias conduction in DC-powered systems, eliminating false triggering |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) CAN Bus Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of engine control unit against alternator load dump transients up to 35 V, 400 ms duration. IC Role / Device Role / Timing Role: Primary clamping device placed at main power entry point before DC/DC converter input. Use Value: Limits rail voltage to ≤27.6 V during surge, preventing damage to MCU, gate drivers, and analog sensors. |
Use Scenario: Shields CAN_H/CAN_L lines in body control module from coupled transients induced by nearby solenoid switching. IC Role / Device Role / Timing Role: Secondary-level TVS on differential bus lines, mounted adjacent to connector interface. Use Value: Clamps common-mode surges to <30 V while maintaining signal integrity due to low capacitance and fast response. |
| Advanced Driver Assistance System (ADAS) Camera Power Rail | Electric Power Steering (EPS) Motor Driver Stage |
Use Scenario: Secures 12 V input to image sensor and ISP in front-facing ADAS camera exposed to under-hood thermal and electrical stress. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of LDO regulators powering CMOS image sensor. Use Value: Maintains uninterrupted operation during cold-crank and load dump by limiting voltage excursions below 27.6 V. |
Use Scenario: Protects high-side/low-side MOSFET gates and bootstrap circuitry in EPS motor driver against inductive kickback. IC Role / Device Role / Timing Role: Localized TVS at gate driver output stage, co-located with power FETs. Use Value: Absorbs >4600 W spikes without latch-up, preserving gate oxide integrity and preventing false turn-on. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S17AHM3/2D | Same VWM/VBR/PPPM specs; HM3 suffix indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified with updated material content | Identical automotive use cases; preferred for new designs per Vishay's "Not For New Designs" notice for HE3 series | Select SM6S17AHM3/2D for new production to ensure long-term availability and updated environmental compliance. |
| SMAJ17A | Lower PPPM (400 W), DO-214AC package, RθJA = 65 °C/W, no AEC-Q101 qualification | Limited to non-automotive industrial or consumer applications with lower surge energy requirements | Use SMAJ17A only in cost-sensitive, non-automotive designs where 4600 W surge immunity is not required. |
Compared with SM6S17AHE3/2D, SM6S17AHM3/2D offers identical electrical performance with enhanced material compliance and lifecycle support, while SMAJ17A provides basic clamping at one-tenth the surge rating and lacks automotive qualification - making it unsuitable for under-hood deployment.
Availability
SM6S17AHE3/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power rails, and electric power steering systems requiring stable component supply under AEC-Q101 and ISO7637-2 compliance.
Supply support for SM6S17AHE3/2D 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 optoelectronics with emphasis on high-reliability and automotive-grade components.
The SM6SxxA family is engineered specifically for automotive load dump and inductive switching transient suppression, combining high-temperature operation, robust surge handling, and AEC-Q101 validation for under-hood electronics.
FAQ
What is the maximum clamping voltage of the SM6S17AHE3/2D at its rated peak pulse current?
The SM6S17AHE3/2D has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured at TC = 25 °C and ensures downstream components remain within safe operating voltage limits during high-energy transients. The SM6S17AHE3/2D maintains this clamping performance across its full operating temperature range.
Is the SM6S17AHE3/2D qualified for automotive applications?
Yes, the SM6S17AHE3/2D is AEC-Q101 qualified and meets ISO7637-2 load dump requirements, making it suitable for automotive applications including engine control units and body electronics. It operates reliably from -55 °C to +175 °C and is manufactured with passivated anisotropic rectifier technology to ensure long-term stability. The SM6S17AHE3/2D carries the HE3 suffix indicating RoHS compliance and whisker-resistant termination.
What does the "HE3" suffix mean in SM6S17AHE3/2D?
The "HE3" suffix in SM6S17AHE3/2D denotes RoHS-compliant, halogen-free construction with matte tin-plated leads that meet JESD 201 Class 2 whisker resistance requirements. It also confirms AEC-Q101 qualification and compliance with J-STD-020 MSL Level 1 reflow profile. The "2D" suffix refers to tape-and-reel packaging with 750 units per reel and anode orientation toward sprocket holes - critical for automated assembly of the SM6S17AHE3/2D.
Can the SM6S17AHE3/2D replace the SM6S17AHM3/2D in existing designs?
The SM6S17AHE3/2D and SM6S17AHM3/2D share identical electrical specifications, package (DO-218AB), pinout, and thermal performance. However, Vishay designates the HM3 version as the recommended replacement for new designs due to updated material content and extended lifecycle support. While the SM6S17AHE3/2D remains functional, long-term supply continuity favors SM6S17AHM3/2D for new projects.
What is the thermal resistance from junction to mount (RθJM) for the SM6S17AHE3/2D?
The SM6S17AHE3/2D 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 device's metal heatsink anode design, which requires direct soldering to a large copper area on the PCB to realize full thermal performance. Proper mounting is essential to maintain the SM6S17AHE3/2D at safe operating temperatures during repeated surge events.
SM6S17AHE3/2D 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):
- 167A
- 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
SM6S17AHE3/2D FAQ
1.How can I place an order for SM6S17AHE3/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S17AHE3/2D 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 SM6S17AHE3/2D reliable?
The price and inventory of SM6S17AHE3/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S17AHE3/2D is usually 5 days.
3.What payment methods are accepted for SM6S17AHE3/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S17AHE3/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S17AHE3/2D?
SM6S17AHE3/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S17AHE3/2D 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 SM6S17AHE3/2D?
For technical support, including SM6S17AHE3/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S17AHE3/2D requirements.
6.How does Aetrix verify that SM6S17AHE3/2D is sourced from the original manufacturer or authorized distributors?
All SM6S17AHE3/2D 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 SM6S17AHE3/2D meets industry standards.
7.What is the process for return or replacement of SM6S17AHE3/2D?
All SM6S17AHE3/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S17AHE3/2D, 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 SM6S17AHE3/2D part is unused and in its original packaging.
Return procedure for SM6S17AHE3/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S17AHE3/2D Tags
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