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Vishay General Semiconductor - Diodes Division SMC5K17AHM3_A/I
- Part No.:
- SMC5K17AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K17AHM3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,624
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Product details
Overview
SMC5K17AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features 18.9 V to 20.9 V breakdown voltage (VBR), 17 V stand-off voltage (VWM), 27.6 V clamping voltage (VC) at 10/1000 μs waveform, 5000 W peak pulse power, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the SMC5K17AHM3_A/I datasheet, SMC5K17AHM3_A/I pinout, SMC5K17AHM3_A/I application, or SMC5K17AHM3_A/I equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial sensor interfaces, and DC power rail conditioning where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
This TVS diode operates as a unidirectional clamping device with a cathode-band polarity marker, leveraging silicon avalanche breakdown to divert transients exceeding VWM. Its 10/1000 μs peak pulse current rating of 181 A and 8/20 μs rating of 1081 A enable protection against both lightning-induced surges and inductive switching spikes.
Thermal performance is defined by RthJA = 90 °C/W and RthJM = 4.0 °C/W, supporting reliable operation up to TJ = 150 °C. It meets IEC 61000-4-2 ESD immunity (±30 kV contact/air) and UL 497B safety recognition (E136766), with halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 18.9 V / 20.9 V - Ensures reliable turn-on above 17 V operating voltage while avoiding false triggering |
| VWM | 17 V - Maximum continuous reverse voltage before leakage exceeds 2 μA; sets system operating margin |
| VC @ IPPM (10/1000 μs) | 27.6 V - Clamped voltage seen by protected circuit during 5000 W transient; clamping ratio = 1.62 |
| PPPM | 5000 W - Peak surge energy handling capability per 10/1000 μs waveform; defines single-event survivability |
| IPPM (10/1000 μs) | 181 A - Maximum surge current the device passes while clamping to 27.6 V; used for PCB trace sizing |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-ambient industrial enclosures |
| ESD Rating | ±30 kV (HBM, contact/air) - Complies with IEC 61000-4-2 Level 4 for system-level ESD robustness |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C peak reflow), halogen-free and RoHS-compliant. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; connected to protected line's lower-potential side | Reference node for unidirectional clamping; ties to GND or return path in power/signal protection schemes |
| Cathode | Current exit terminal during reverse avalanche; marked by color band | Connected to protected line (e.g., 12 V rail or CAN_H); determines clamping polarity and directionality |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - required for ECU and ADAS module integration |
| 5000 W (10/1000 μs) peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) without derating in standard PCB layouts |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive ICs |
| UL 497B recognized (E136766) | Enables compliance with end-equipment safety standards for telecom and industrial power supplies without additional certification effort |
| MSL Level 1, 260 °C peak | Permits standard lead-free reflow assembly without pre-baking; eliminates moisture-related popcorning risk |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rail and LIN bus lines in BCM against load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to limit voltage excursions to ≤27.6 V. Use Value: Prevents damage to microcontroller I/O and LIN transceivers during ISO 7637-2 Pulse 5a (load dump) events up to 35 V. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers from field-wiring transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt surge energy before reaching optocoupler input stage. Use Value: Maintains <2 μA leakage at 24 V nominal, ensuring clean logic-level detection while surviving 1 kV/500 A surge per IEC 61000-4-5. |
| Automotive Infotainment Power Supply | Telecom Base Station DC Feeder Line |
|
Use Scenario: Secondary overvoltage protection on 5 V/3.3 V LDO outputs feeding infotainment SoCs and memory. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100–200 pF at VWM) placed adjacent to SoC power pins. Use Value: Clamps fast ESD events (<1 ns rise) to <30 V without disrupting high-speed DDR or PCIe signaling integrity. |
Use Scenario: Primary surge suppression on -48 V DC feeder lines entering telecom base station cabinets. IC Role / Device Role / Timing Role: High-power unidirectional TVS mounted at cabinet entry point, coordinated with upstream gas discharge tube (GDT). Use Value: Handles 40 kW (8/20 μs) surge currents up to 1081 A, enabling coordination with GDT for multi-stage protection architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-M3/86A | Lower PPPM (400 W), SMA package (smaller footprint), VC = 27.6 V same, but IPPM = 14.3 A (10/1000 μs) | Suitable only for low-energy ESD and low-current transients; not rated for automotive load dump or IEC 61000-4-5 | Select when board space is constrained and surge threat level is limited to HBM ±8 kV or IEC 61000-4-2 Level 2 |
| SMCJ17A-HM3_A/I | Same SMC package, AEC-Q101 qualified, but higher PPPM (1500 W), VC = 27.6 V, IPPM = 54.3 A (10/1000 μs) | Designed for mid-tier surge immunity (IEC 61000-4-5 Level 3); lacks 5000 W capability needed for full automotive load dump | Choose when cost sensitivity outweighs need for highest surge rating, and application does not require ISO 7637-2 Pulse 5a compliance |
Compared with SMC5K17AHM3_A/I, SMAJ17A-M3/86A offers compact size but insufficient energy handling for automotive or industrial mains-connected systems, while SMCJ17A-HM3_A/I provides AEC-Q101 compliance and better thermal robustness than SMAJ but falls short of the 5000 W rating essential for primary protection in harsh environments.
Availability
SMC5K17AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power distribution systems requiring stable component supply with long-term lifecycle assurance.
Supply support for SMC5K17AHM3_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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMC5K series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where failure tolerance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMC5K17AHM3_A/I at its rated peak pulse current?
The SMC5K17AHM3_A/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its 10/1000 μs peak pulse current of 181 A. This value is measured per Figure 3 in the datasheet and defines the upper voltage limit imposed on protected circuits during standardized surge events. The clamping performance remains stable across the full operating junction temperature range of -55 °C to +150 °C.
Is SMC5K17AHM3_A/I qualified for automotive applications?
Yes, SMC5K17AHM3_A/I is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 09-Jan-2024. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making it suitable for use in automotive body electronics, infotainment systems, and powertrain modules where reliability under harsh environmental conditions is required.
What does the "HM3_A/I" suffix indicate in SMC5K17AHM3_A/I?
The "HM3_A/I" suffix denotes three key attributes: "H" indicates tape-and-reel packaging in 13-inch reels (3500 units), "M3" specifies halogen-free and RoHS-compliant construction, and "A/I" identifies the AEC-Q101 qualified version with JESD 201 Class 2 whisker resistance. This distinguishes SMC5K17AHM3_A/I from non-automotive variants like SMC5K17A-M3/I.
Can SMC5K17AHM3_A/I be used in bidirectional protection configurations?
No, SMC5K17AHM3_A/I is strictly unidirectional, as stated in the Features section and confirmed by its single cathode band marking and electrical characteristics table. For bidirectional protection, Vishay offers separate part numbers such as SMC5K17CA, which contains two anti-series diodes. Using SMC5K17AHM3_A/I in reverse-biased configurations risks permanent breakdown outside its specified operating quadrant.
What is the thermal resistance from junction to ambient for SMC5K17AHM3_A/I?
The junction-to-ambient thermal resistance (RthJA) for SMC5K17AHM3_A/I is 90 °C/W, measured per JEDEC 51-2A on a standard FR4 PCB with 2 oz. copper and the recommended mounting pad layout. This value assumes natural convection cooling and is critical for calculating maximum allowable power dissipation and steady-state temperature rise in continuous leakage scenarios.
SMC5K17AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- 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):
- 181.2A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC5K17AHM3_A/I FAQ
1.How can I place an order for SMC5K17AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K17AHM3_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 SMC5K17AHM3_A/I reliable?
The price and inventory of SMC5K17AHM3_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 SMC5K17AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC5K17AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K17AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K17AHM3_A/I?
SMC5K17AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K17AHM3_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 SMC5K17AHM3_A/I?
For technical support, including SMC5K17AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K17AHM3_A/I requirements.
6.How does Aetrix verify that SMC5K17AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC5K17AHM3_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 SMC5K17AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC5K17AHM3_A/I?
All SMC5K17AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K17AHM3_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 SMC5K17AHM3_A/I part is unused and in its original packaging.
Return procedure for SMC5K17AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K17AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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