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Vishay General Semiconductor - Diodes Division SM6S17AHM3/I
- Part No.:
- SM6S17AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AC
- Datasheet:
-
SM6S17AHM3/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,749
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Product details
Overview
SM6S17AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DO-218AB package, rated for 17 V standoff voltage (VWM), 19.9 V nominal breakdown voltage (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 SM6S17AHM3/I datasheet, SM6S17AHM3/I pinout, SM6S17AHM3/I application, or SM6S17AHM3/I equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity, low leakage (<10 μA at VWM), high surge current capability (IPPM = 167 A), and thermal resistance RθJM = 0.45 °C/W for heatsink-mounted designs.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation at TJ = 175 °C. It delivers clamping voltage VC = 27.6 V at IPPM and exhibits a positive temperature coefficient of VBR (αT = 0.082 %/°C), enabling predictable voltage shift over temperature.
The device meets ISO7637-2 surge requirements under specified test conditions and complies with MSL Level 1 per J-STD-020 (peak reflow = 245 °C). Its DO-218AB package features a metal heatsink terminal (anode) and matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (nom) | 19.9 V at IT = 5 mA - precise breakdown threshold for reliable clamping initiation |
| VC @ IPPM | 27.6 V - clamped voltage during 167 A 10/1000 μs surge, limiting downstream stress |
| PPPM (10/1000 μs) | 4600 W - peak transient energy absorption capacity without failure |
| TJ max | 175 °C - enables operation in under-hood automotive environments |
| RθJM | 0.45 °C/W - low junction-to-mount thermal resistance supports direct heatsink attachment |
| ID @ VWM | <10 μA - minimal leakage preserves battery life in always-on vehicle systems |
Pinout & Package
Package: DO-218AB - surface-mount, anode-heatsink configuration with molded UL 94 V-0 compound and two terminals: Lead 1 (cathode) and Lead 2/metal heatsink (anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (cathode) | Transient current return path | Connected to protected circuit ground; carries full surge current during clamping |
| Lead 2 / Metal Heatsink (anode) | Main power rail connection & thermal interface | Attached to chassis or heatsink; serves as both electrical anode and primary thermal dissipation path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation optimized design | Reduces parameter drift and improves long-term stability under thermal stress |
| Meets ISO7637-2 surge specification | Withstands standardized automotive load dump transients up to 35 V/10 ms exponential waveform |
| MSL Level 1 rating | Enables single-pass reflow assembly without moisture sensitivity concerns |
| Low forward voltage drop | VF ≤ 1.9 V at IF = 100 A - minimizes conduction loss during forward-biased fault events |
Applications
| Engine Control Unit (ECU) Protection | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protects microcontroller power rails against 12 V system load dump surges during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and DC/DC input stage. Use Value: Limits transient voltage to ≤27.6 V, preventing damage to 3.3 V/5 V logic supplies downstream. |
Use Scenario: Shields BCM power inputs from inductive switching spikes generated by door lock actuators and window motors. IC Role / Device Role / Timing Role: Primary surge suppression element on 12 V main input before fuse and LDO regulators. Use Value: Absorbs 4600 W peak pulses without degradation, maintaining system uptime across 100,000+ cycles. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Infotainment Head Unit Power Supply |
Use Scenario: Safeguards image sensor and SerDes power lines in rear-view cameras exposed to harsh under-vehicle environments. IC Role / Device Role / Timing Role: Secondary protection after upstream fuse, placed adjacent to camera module PCB edge. Use Value: Operates reliably at TJ = 175 °C ambient, ensuring functionality during prolonged engine heat soak. |
Use Scenario: Guards USB-C PD and audio amplifier supply rails against ignition-induced transients in center console units. IC Role / Device Role / Timing Role: High-power TVS mounted directly to metal chassis for optimal thermal management. Use Value: Delivers RθJM = 0.45 °C/W thermal path, reducing junction temperature rise by >40 % vs. standard SMD packages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Lower PPPM (400 W), SMA package, RθJA = 85 °C/W, no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to consumer or industrial board-level protection | Select only for cost-sensitive non-automotive designs where surge energy is <10 % of SM6S17AHM3/I capability |
| SM6S17AHM3 | Same electrical specs and DO-218AB package; differs only in packaging - bulk vs. tape-and-reel (I suffix) | Identical functional performance; choice depends solely on assembly method (manual vs. pick-and-place) | Choose SM6S17AHM3/I for automated SMT production requiring 13" reel delivery with anode orientation toward sprocket hole |
Compared with SMAJ17A and SM6S17AHM3, the SM6S17AHM3/I provides automotive-grade reliability, 11.5× higher surge power handling, and direct heatsink thermal coupling - making it the sole option for AEC-Q101-compliant load dump protection where thermal and surge margins are critical.
Availability
SM6S17AHM3/I is available at Aetrix Electronics and suitable for automotive ECU protection, body electronics power conditioning, and ADAS camera power line hardening requiring stable component supply across extended temperature and lifecycle demands.
Supply support for SM6S17AHM3/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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SM6SxxA family is engineered specifically for automotive transient suppression - emphasizing AEC-Q101 compliance, 175 °C operation, and ISO7637-2 surge robustness in surface-mount form factors.
FAQ
What is the clamping voltage of the SM6S17AHM3/I at its rated peak pulse current?
The SM6S17AHM3/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) of 167 A under the standard 10/1000 μs waveform. This value is measured at TC = 25 °C and ensures downstream circuitry remains within safe operating limits during transient events. The SM6S17AHM3/I maintains this clamping performance across its full operating temperature range due to its controlled VBR temperature coefficient.
Is the SM6S17AHM3/I qualified for automotive applications?
Yes, the SM6S17AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use. It meets stringent reliability requirements including high-temperature operation up to TJ = 175 °C, ISO7637-2 load dump surge immunity, and MSL Level 1 reflow compatibility. The "H" in its part number denotes AEC-Q101 qualification, and the DO-218AB package supports direct heatsink mounting required in under-hood environments - all confirmed in Vishay document 88384.
What does the "I" suffix mean in SM6S17AHM3/I?
The "I" suffix in SM6S17AHM3/I indicates the preferred packaging format: 13-inch diameter plastic tape and reel, with the anode oriented toward the sprocket hole. This configuration is optimized for high-speed automated SMT placement. The base part SM6S17AHM3 is identical electrically and thermally; the "I" denotes only the delivery method and orientation - not a functional or parametric variant of the SM6S17AHM3/I device itself.
How does the thermal performance of SM6S17AHM3/I compare to standard SMA or SMB TVS diodes?
The SM6S17AHM3/I achieves RθJM = 0.45 °C/W via its metal heatsink terminal (Lead 2), significantly outperforming standard SMA/SMB packages (typically RθJA > 60 °C/W). When mounted to a chassis or heatsink, the SM6S17AHM3/I dissipates heat more efficiently, allowing sustained operation at higher ambient temperatures. This makes the SM6S17AHM3/I uniquely suited for high-power automotive transients where thermal runaway must be avoided.
Does the SM6S17AHM3/I meet RoHS and halogen-free requirements?
Yes, the SM6S17AHM3/I is RoHS-compliant and halogen-free, as indicated by the "E3" suffix in its ordering code. The molding compound meets UL 94 V-0 flammability rating, and the matte tin-plated leads satisfy J-STD-002 solderability standards. These environmental and safety attributes are documented in Vishay's material categorization guide (doc?99912) and confirmed in the official SM6S10A–SM6S36A datasheet revision 06-Feb-2026.
SM6S17AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AC
- 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):
- 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-218AC
SM6S17AHM3/I FAQ
1.How can I place an order for SM6S17AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S17AHM3/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 SM6S17AHM3/I reliable?
The price and inventory of SM6S17AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S17AHM3/I is usually 5 days.
3.What payment methods are accepted for SM6S17AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S17AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S17AHM3/I?
SM6S17AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S17AHM3/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 SM6S17AHM3/I?
For technical support, including SM6S17AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S17AHM3/I requirements.
6.How does Aetrix verify that SM6S17AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM6S17AHM3/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 SM6S17AHM3/I meets industry standards.
7.What is the process for return or replacement of SM6S17AHM3/I?
All SM6S17AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S17AHM3/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 SM6S17AHM3/I part is unused and in its original packaging.
Return procedure for SM6S17AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S17AHM3/I Tags
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