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Vishay General Semiconductor - Diodes Division SMC5K14A-M3/I
- Part No.:
- SMC5K14A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K14A-M3/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,046
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Product details
Overview
SMC5K14A-M3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 15.6–17.2 V breakdown voltage (VBR), 14 V stand-off voltage (VWM), 23.2 V max clamping voltage at 216 A (10/1000 μs), 5000 W peak pulse power, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMC5K14A-M3/I datasheet, SMC5K14A-M3/I pinout, SMC5K14A-M3/I application, or SMC5K14A-M3/I equivalent, this device is selected for high-energy surge suppression on DC power rails and signal lines where fast response (<1 ns), low clamping ratio (1.65×VWM), and stable thermal performance up to +150 °C junction temperature are critical.
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 the SMC package provides 90 °C/W junction-to-ambient thermal resistance and meets J-STD-020 MSL Level 1 reflow compatibility.
The device delivers 216 A peak pulse current (IPPM) under 10/1000 μs waveform and sustains 1333 A under 8/20 μs surge-enabling protection against both lightning-induced surges and inductive switching transients. It exhibits ≤2.0 μA reverse leakage at VWM, ensuring negligible standby power loss in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 15.6 V / 17.2 V - Ensures reliable triggering above 14 V operating rail without false conduction |
| VWM | 14 V - Maximum continuous reverse voltage before leakage exceeds 2.0 μA |
| VC @ IPPM (10/1000 μs) | 23.2 V - Clamps 216 A surge to safe level for downstream 24 V-rated ICs and MOSFETs |
| PPPM | 5000 W - Withstands high-energy transients per IEC 61000-4-5 Level 4 (4 kV line-to-line) |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial environments |
| ESD immunity | ±30 kV HBM - Protects against handling and system-level electrostatic discharge |
| Package | SMC (DO-214AB) - Industry-standard surface-mount footprint with 3.2 mm × 6.2 mm body and 2.0 mm height |
Pinout & Package
SMC5K14A-M3/I uses the standard SMC (DO-214AB) package: cathode indicated by a color band, with two terminals-cathode (anode connected internally to substrate) and anode. The package is halogen-free, RoHS-compliant, and qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for reverse-biased clamping | Connected to protected line (e.g., 12–24 V rail); conducts during overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects DC power and signal lines without affecting forward-biased operation or introducing rectification effects |
| 5000 W peak pulse power (10/1000 μs) | Supports sustained surge suppression in automotive load-dump and industrial motor-drive applications |
| AEC-Q101 qualified | Validated for automotive use including engine control units, body electronics, and ADAS sensor interfaces |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes stress on downstream components compared to higher-ratio TVS devices |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free assembly without moisture-related popcorn failure risk |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECU power input subjected to ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC/DC converter input to limit transient voltage to <24 V. Use Value: Prevents damage to buck controller ICs and gate drivers by clamping 100 V/100 ms load dump to 23.2 V at 216 A. |
Use Scenario: Analog output line (4–20 mA) from pressure sensor exposed to field wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Signal-line TVS placed between sensor output and PLC analog input, with series current-limiting resistor. Use Value: Limits transient voltage to ≤23.2 V, preserving 16-bit ADC accuracy and preventing op-amp latch-up during 8/20 μs lightning surges. |
| Telecom DC Power Input Protection | Computer Peripheral USB VBUS Protection |
|
Use Scenario: -48 V telecom rectifier output feeding PoE midspan equipment, subject to AC line coupling and lightning surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy and providing fast response. Use Value: Clamps 10/1000 μs surges to 23.2 V while maintaining <2 μA leakage at -48 V reverse bias, avoiding false trips. |
Use Scenario: VBUS line of USB 2.0 hub IC exposed to ESD events during hot-plug insertion in consumer laptops. IC Role / Device Role / Timing Role: ESD clamp placed directly at USB connector, before polyfuse and hub controller. Use Value: Absorbs ±30 kV HBM ESD pulses within <1 ns, limiting voltage to 23.2 V and protecting 5 V tolerant PHY transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-M3/87A | Lower PPPM (600 W), smaller SMB package (DO-214AA), same VWM/VBR range | Suitable for lower-energy surges (IEC 61000-4-2 only); not rated for 8/20 μs lightning tests | Select when board space is constrained and surge threat level is limited to ESD and minor switching noise |
| SMC5K14CA-M3/I | Bi-directional variant; identical VBR, VC, and PPPM, but symmetric clamping for AC or bipolar signal lines | Required for RS-485, CAN, or audio lines where both positive and negative transients occur | Choose only if bidirectional protection is needed; unidirectional SMC5K14A-M3/I offers lower capacitance and better DC rail efficiency |
Compared with SMBJ14A-M3/87A and SMC5K14CA-M3/I, the SMC5K14A-M3/I delivers 8.3× higher surge power handling than SMBJ14A and avoids unnecessary capacitance penalty of bi-directional design-making it optimal for high-reliability 12–24 V DC power rail protection where unidirectional clamping suffices.
Availability
SMC5K14A-M3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and computer peripheral designs requiring stable component supply across multi-year production cycles.
Supply support for SMC5K14A-M3/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, TVS, MOSFETs, and optoelectronics with emphasis on reliability, power efficiency, and automotive qualification.
The SMC5KxxA family was engineered specifically for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 5 kW surge capability.
FAQ
What is the maximum clamping voltage of the SMC5K14A-M3/I under a 10/1000 μs surge?
The SMC5K14A-M3/I has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 216 A under a 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 87742 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the SMC5K14A-M3/I AEC-Q101 qualified?
Yes, the SMC5K14A-M3/I is AEC-Q101 qualified. Although the base SMC5K14A part is industrial grade, the "HM3" suffix denotes AEC-Q101 qualification-but the "M3/I" suffix indicates halogen-free, RoHS-compliant packaging with JESD 201 Class 2 whisker resistance. Per Vishay documentation, SMC5K10A–SMC5K20A variants-including SMC5K14A-are eligible for HM3 ordering codes and thus AEC-Q101 qualification when specified accordingly.
What does the "M3/I" suffix mean in SMC5K14A-M3/I?
The "M3" suffix indicates halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance requirements. The "I" denotes packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units-optimized for high-volume SMT assembly. This differs from "H" (7-inch reel, 850 units) and "HM3" (AEC-Q101 qualified version).
Can the SMC5K14A-M3/I be used for bidirectional signal line protection?
No, the SMC5K14A-M3/I is unidirectional and unsuitable for bidirectional signal lines such as RS-485 or CAN. Its cathode-anode polarity means it only clamps reverse-voltage transients. For bidirectional protection, the SMC5K14CA-M3/I (complementary bi-directional variant) must be used instead-offering identical clamping performance but symmetric breakdown in both polarities.
What is the thermal resistance of the SMC5K14A-M3/I in standard PCB mounting?
The SMC5K14A-M3/I has a typical junction-to-ambient thermal resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A guidelines. Its junction-to-mount thermal resistance (RthJM) is 4.0 °C/W, enabling effective heat transfer to copper planes-critical for sustaining repeated surge events without thermal runaway.
SMC5K14A-M3/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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 216A
- 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 (SMC)
SMC5K14A-M3/I FAQ
1.How can I place an order for SMC5K14A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K14A-M3/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 SMC5K14A-M3/I reliable?
The price and inventory of SMC5K14A-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K14A-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K14A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K14A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K14A-M3/I?
SMC5K14A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K14A-M3/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 SMC5K14A-M3/I?
For technical support, including SMC5K14A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K14A-M3/I requirements.
6.How does Aetrix verify that SMC5K14A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K14A-M3/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 SMC5K14A-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K14A-M3/I?
All SMC5K14A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K14A-M3/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 SMC5K14A-M3/I part is unused and in its original packaging.
Return procedure for SMC5K14A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K14A-M3/I Tags
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