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Vishay General Semiconductor - Diodes Division SMC5K14CA-M3/I
- Part No.:
- SMC5K14CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K14CA-M3/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
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Product details
Overview
SMC5K14CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 14 V stand-off voltage (VWM), and 23.2 V maximum clamping voltage (VC) at 216 A peak pulse current - deployed on power rails and signal lines of automotive ECUs and industrial motor drives.
For engineers reviewing the SMC5K14CA-M3/I datasheet, SMC5K14CA-M3/I pinout, SMC5K14CA-M3/I application, or SMC5K14CA-M3/I equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, bidirectional capability for AC-coupled interfaces, AEC-Q101 qualification for automotive use, and thermal resistance (RthJA = 90 °C/W) under PCB layout constraints.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by transient overvoltage events, leveraging avalanche breakdown to shunt surge current away from downstream circuitry. Its bidirectional structure enables symmetric clamping across both polarities without polarity marking, supporting AC signal line and dual-rail DC protection.
It delivers 5000 W peak pulse power per 10/1000 μs waveform and sustains 40 kW under 8/20 μs lightning surge conditions, with low incremental surge resistance ensuring minimal voltage overshoot during fast transients. Junction temperature range spans –55 °C to +175 °C, and it meets MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before conduction; must exceed system nominal rail voltage (e.g., 12 V automotive) with safety margin. |
| VBR (min/max) | 15.6 V / 17.2 V - Breakdown occurs within this range at 1 mA test current; defines onset of clamping behavior. |
| VC @ IPPM | 23.2 V at 216 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge; must stay below downstream IC's absolute max rating. |
| PPPM | 5000 W - Peak pulse power handling capacity under standard 10/1000 μs waveform; determines survivability against repetitive switching transients. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in under-hood automotive environments and high-power industrial enclosures. |
| RthJA | 90 °C/W - Thermal resistance from junction to ambient on standard FR4 PCB; informs required copper area and airflow for thermal management. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band. Matte tin-plated leads, halogen-free, RoHS-compliant, and qualified to AEC-Q101.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; no polarity orientation required during placement - simplifies layout and eliminates assembly errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled data lines (e.g., CAN, LIN) and dual-polarity sensor outputs without external polarity logic. |
| 5000 W peak pulse power (10/1000 μs) | Withstands repeated inductive switch-off surges in 12 V/24 V automotive power distribution networks without degradation. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for ECU front-end protection. |
| UL 497B recognition (E136766) | Meets safety standards for telecom and industrial interface protection, enabling certification-ready system design. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning - reduces manufacturing complexity and cost. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting microcontroller power inputs in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed between battery feed and LDO input. Use Value: Limits transient voltage to ≤23.2 V during 216 A surges, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Shielding analog output pins of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional shunt element on 4–20 mA or 0–10 V signal lines subject to ESD and cable discharge. Use Value: Clamps ±30 kV HBM ESD events per IEC 61000-4-2 while maintaining <1 μA leakage at 14 V, preserving signal accuracy. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY power and data lines in PoE-powered network switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage ahead of secondary TVS arrays and common-mode chokes. Use Value: Absorbs 40 kW (8/20 μs) lightning energy per UL 497B, reducing downstream component stress and improving system-level surge pass rate. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., washing machine drum drives). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback. Use Value: Limits voltage overshoot to 23.2 V at 216 A, preventing MOSFET drain-source breakdown and extending inverter lifespan. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA-E3/5A (Vishay) | Lower peak pulse power (400 W), SMA package (smaller footprint), same VWM/VC but higher RthJA (150 °C/W). | Suitable only for low-energy transients (e.g., board-level ESD); not rated for automotive load dump or lightning. | Select when space-constrained and surge energy is limited to <500 W; avoid for AEC-Q101 or high-power industrial use. |
| 1.5KE14CA (ON Semiconductor) | Higher VBR (15.6–17.2 V same), but through-hole DO-201 package, 5000 W rating, no AEC-Q101 qualification. | Lacks automotive qualification and surface-mount compatibility; requires wave soldering or manual assembly. | Choose only for legacy through-hole designs where rework tolerance and cost outweigh automotive compliance needs. |
Compared with SMAJ14CA-E3/5A and 1.5KE14CA, the SMC5K14CA-M3/I uniquely combines AEC-Q101 qualification, 5000 W surge capacity, and SMC surface-mount packaging - making it the only option among the three qualified for high-reliability automotive power rail protection without layout or qualification trade-offs.
Availability
SMC5K14CA-M3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom line protection circuits, and consumer appliance motor drive systems requiring stable component supply across long production lifecycles.
Supply support for SMC5K14CA-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMC5K14CA-M3/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMC5K14CA-M3/I under a 10/1000 μs surge?
The SMC5K14CA-M3/I exhibits a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 216 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with downstream IC voltage tolerances.
Is the SMC5K14CA-M3/I qualified for automotive applications?
Yes, the SMC5K14CA-M3/I is AEC-Q101 qualified, confirming its suitability for automotive electronic systems including engine control units, body control modules, and ADAS sensor interfaces. This qualification covers stress tests such as temperature cycling, humidity bias, and mechanical shock - validating long-term reliability in vehicle environments.
Does the SMC5K14CA-M3/I have polarity markings on the package?
No, the SMC5K14CA-M3/I is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMC (DO-214AB) package. Both terminals are functionally identical, allowing unrestricted orientation during PCB placement - reducing assembly risk and simplifying layout for differential or AC-coupled signal paths.
What is the maximum operating junction temperature for the SMC5K14CA-M3/I?
The SMC5K14CA-M3/I has a maximum junction temperature (TJ) of +175 °C, enabling reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial motor drives. This rating is supported by its thermal resistance characteristics (RthJA = 90 °C/W) and MSL Level 1 reflow compatibility.
How does the SMC5K14CA-M3/I compare to standard ESD protection diodes?
Unlike low-capacitance ESD diodes rated for <100 W, the SMC5K14CA-M3/I is engineered for high-energy transients - delivering 5000 W (10/1000 μs) and 40 kW (8/20 μs) surge handling. It targets system-level threats like load dump and lightning, not just human-body-model ESD, making it appropriate for primary protection stages rather than I/O pin-level defense.
SMC5K14CA-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:
- -
- Bidirectional Channels:
- 1
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K14CA-M3/I FAQ
1.How can I place an order for SMC5K14CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K14CA-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 SMC5K14CA-M3/I reliable?
The price and inventory of SMC5K14CA-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 SMC5K14CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K14CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K14CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K14CA-M3/I?
SMC5K14CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K14CA-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 SMC5K14CA-M3/I?
For technical support, including SMC5K14CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K14CA-M3/I requirements.
6.How does Aetrix verify that SMC5K14CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K14CA-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 SMC5K14CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K14CA-M3/I?
All SMC5K14CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K14CA-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 SMC5K14CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K14CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K14CA-M3/I Tags
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