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Vishay General Semiconductor - Diodes Division SMC5K17A-M3/H
- Part No.:
- SMC5K17A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K17A-M3/H.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,312
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Product details
Overview
SMC5K17A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features 18.9–20.9 V breakdown voltage (VBR), 17 V stand-off voltage (VWM), 27.6 V max clamping voltage at 10/1000 μs (IPPM = 181 A), and 5000 W peak pulse power rating - deployed to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMC5K17A-M3/H datasheet, SMC5K17A-M3/H pinout, SMC5K17A-M3/H application, or SMC5K17A-M3/H equivalent, this device is selected for robust ESD and lightning surge immunity in 12 V–24 V DC systems where low clamping voltage, fast response (<1 ns), and AEC-Q101 qualification are critical design requirements.
Technical Context
This TVS operates as a unidirectional clamping device with avalanche breakdown behavior, triggered when reverse voltage exceeds VBR. Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while its thermal resistance (RthJA = 90 °C/W) supports sustained operation up to TJ = 150 °C.
The device meets IEC 61000-4-2 ESD immunity (±30 kV contact/air), UL 497B recognition (E136766), and J-STD-020 MSL Level 1 - enabling reflow compatibility at 260 °C peak. Its halogen-free, RoHS-compliant construction and matte tin-plated leads satisfy automotive and industrial reliability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 18.9 V / 20.9 V - defines minimum and maximum voltage at which avalanche conduction begins under 1 mA test current; sets precise clamping threshold window |
| VWM | 17 V - maximum continuous reverse operating voltage before leakage exceeds 2 μA; determines safe working margin below breakdown |
| VC @ IPPM (10/1000 μs) | 27.6 V - clamped voltage seen by protected circuit during 181 A surge; directly limits stress on downstream components |
| PPPM | 5000 W - peak pulse power handling capability per 10/1000 μs waveform; enables protection against high-energy transients like load dump |
| IPPM (10/1000 μs) | 181 A - maximum non-repetitive surge current it can safely shunt without degradation; validates robustness in harsh electrical environments |
| TJ max. | 150 °C - maximum junction temperature; allows reliable operation in under-hood or enclosed industrial enclosures without derating |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact/air) - ensures immunity to human-body-model discharges common in assembly and field service |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode-indicated by molded band. Dimensions: 7.11 mm × 6.22 mm × 2.30 mm (L × W × H). Mounting pad layout optimized for thermal dissipation and JEDEC-compliant reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during overvoltage events |
| Cathode | Protected line input terminal | Connected to line being protected (e.g., 12 V rail or sensor signal); conducts avalanche current when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Enables integration on positive-rail power lines without reverse-bias leakage concerns in DC systems |
| 5000 W peak pulse power (10/1000 μs) | Supports protection against ISO 7637-2 Pulse 5a (load dump) in 12 V automotive networks |
| AEC-Q101 qualified (HM3 suffix variants) | Validates reliability for automotive electronics including body control modules and ADAS sensor interfaces |
| UL 497B recognized (E136766) | Meets safety certification requirements for telecom and industrial power supply surge protection |
| MSL Level 1, 260 °C peak reflow | Permits single-pass lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing energy before it reaches LDOs or microcontrollers. Use Value: Limits voltage excursion to ≤27.6 V during 181 A surges, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) shunt protector on signal line, grounded at PCB edge. Use Value: Clamps ±30 kV ESD strikes within <1 ns while adding negligible loading to 10 kHz sensor bandwidth. |
| Telecom DC Power Input Protection | Computer Peripheral Port Protection |
|
Use Scenario: Safeguarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on DC input, coordinated with upstream MOVs and downstream filtering. Use Value: Withstands 5000 W pulses and maintains VC ≤27.6 V, preserving integrity of DC-DC converters rated for 36 V input max. |
Use Scenario: Hardening USB or HDMI hot-swap ports against user-handling ESD in consumer laptops and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS and data lines, leveraging low leakage (<2 μA at 17 V) to avoid standby current penalties. Use Value: Provides ±30 kV air/contact ESD immunity without affecting USB 2.0 signal integrity or enumeration timing. |
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-E3/5A (Vishay) | Lower PPPM (400 W), smaller SMA package, same VWM/VBR range but higher VC (27.7 V) | Targeted at space-constrained consumer electronics; not AEC-Q101 qualified or UL-recognized | Select when board area is limited and automotive/industrial certification is not required |
| 1.5KE18A (ON Semiconductor) | Higher VC (29.2 V), through-hole DO-201 package, same 5000 W rating but slower thermal recovery | Used in legacy power supply designs; lacks MSL Level 1 and halogen-free compliance | Choose only for through-hole prototyping or cost-sensitive industrial replacements without reflow constraints |
Compared with SMAJ17A-E3/5A and 1.5KE18A, the SMC5K17A-M3/H delivers superior surge robustness in surface-mount form with certified automotive qualification, lower clamping voltage, and full reflow compatibility - making it optimal for next-generation automotive and industrial PCBs requiring zero-layout compromise on protection performance.
Availability
SMC5K17A-M3/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom power inputs, and computer peripheral protection requiring stable component supply across multi-year production cycles.
Supply support for SMC5K17A-M3/H 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 power MOSFETs with emphasis on reliability and application-specific performance.
The SMC5K17A-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for automotive-grade and industrial-grade transient suppression where precision clamping, high surge capacity, and long-term stability are mandatory.
FAQ
What is the breakdown voltage tolerance for SMC5K17A-M3/H?
The SMC5K17A-M3/H has a specified breakdown voltage (VBR) range of 18.9 V to 20.9 V at 1.0 mA test current, representing a ±5.5% tolerance about the nominal 17 V stand-off rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level overvoltage margining in designs using the SMC5K17A-M3/H.
Is SMC5K17A-M3/H suitable for automotive applications?
Yes, the SMC5K17A-M3/H is halogen-free, RoHS-compliant, and meets J-STD-020 MSL Level 1 for reflow. While the base SMC5K17A-M3/H variant is industrial-grade, its HM3-suffix counterpart (e.g., SMC5K17AHM3_A/H) is explicitly AEC-Q101 qualified. Engineers selecting the SMC5K17A-M3/H for automotive use must verify qualification status via ordering code and consult Vishay's automotive product matrix to confirm compliance for their specific application tier.
What is the maximum clamping voltage of SMC5K17A-M3/H under 8/20 μs surge conditions?
The SMC5K17A-M3/H has a maximum clamping voltage (VC) of 37.0 V at 1081 A under the 8/20 μs surge waveform. This value is measured per IEC 61000-4-5 and reflects worst-case voltage seen by protected circuitry during high-current, short-duration transients such as lightning-induced surges - a key parameter used in conjunction with VWM and VBR to validate safe operating margins for the SMC5K17A-M3/H in system-level surge testing.
Does SMC5K17A-M3/H have UL recognition?
Yes, the SMC5K17A-M3/H carries UL 497B recognition with file number E136766, certifying its suitability for use in telecommunications and industrial equipment surge protection circuits. This listing confirms compliance with UL's requirements for transient voltage suppressors used in secondary circuit protection, including dielectric strength, flammability (UL 94 V-0), and long-term reliability under repeated surge stress - all verified for the SMC5K17A-M3/H.
How does the thermal resistance of SMC5K17A-M3/H affect PCB layout?
The SMC5K17A-M3/H has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W on standard FR4 with 2 oz copper. To maintain TJ ≤150 °C during repetitive surges, PCB layout must include adequate copper pour on both anode and cathode pads, minimize trace length, and avoid thermal isolation. The SMC5K17A-M3/H benefits from symmetric thermal vias under the terminals to enhance heat spreading - especially critical in high-density automotive modules where ambient temperatures exceed 85 °C.
SMC5K17A-M3/H 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC5K17A-M3/H FAQ
1.How can I place an order for SMC5K17A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K17A-M3/H 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 SMC5K17A-M3/H reliable?
The price and inventory of SMC5K17A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K17A-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K17A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K17A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K17A-M3/H?
SMC5K17A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K17A-M3/H 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 SMC5K17A-M3/H?
For technical support, including SMC5K17A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K17A-M3/H requirements.
6.How does Aetrix verify that SMC5K17A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K17A-M3/H 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 SMC5K17A-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K17A-M3/H?
All SMC5K17A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K17A-M3/H, 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 SMC5K17A-M3/H part is unused and in its original packaging.
Return procedure for SMC5K17A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K17A-M3/H Tags
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