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Vishay General Semiconductor - Diodes Division SMC5K14CA-M3/H
- Part No.:
- SMC5K14CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K14CA-M3/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
SMC5K14CA-M3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR), 23.2 V clamping voltage at 216 A (10/1000 μs), 5000 W peak pulse power, and AEC-Q101 qualification - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the SMC5K14CA-M3/H datasheet, SMC5K14CA-M3/H pinout, SMC5K14CA-M3/H application, or SMC5K14CA-M3/H equivalent, key selection criteria include clamping performance under 10/1000 μs transients, bidirectional surge handling capability, MSL Level 1 reflow compatibility, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical bidirectional conduction, enabling suppression of both positive and negative polarity transients without polarity marking. Its low incremental surge resistance and fast response time (<1 ns) ensure effective clamping before downstream ICs or MOSFETs experience overvoltage stress.
The device is rated for 175 °C maximum junction temperature and exhibits thermal resistance RthJA = 90 °C/W and RthJM = 4.0 °C/W, supporting robust thermal management in compact PCB layouts. It meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air discharge) and UL 497B safety recognition (E136766).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below system rail. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM (10/1000 μs) | 23.2 V at 216 A - Clamping voltage during standard lightning surge test; determines protected circuit's peak overvoltage exposure. |
| PPPM | 5000 W - Peak pulse power handling capability with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| TJ max. | +175 °C - Extended junction temperature rating supports operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact/air) - Provides robust electrostatic discharge immunity without external shielding. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band. Matte tin-plated leads, halogen-free, RoHS-compliant, JESD 201 Class 2 whisker tested.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Identical terminals enable mounting without orientation check; bidirectional clamping protects both polarities equally. |
| Cathode (not marked) | Reference node for unidirectional variants | Not applicable - SMC5K14CA-M3/H is explicitly bidirectional; no polarity marking required per datasheet Note. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 5000 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV line-to-ground in 2 Ω source impedance systems. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS subsystems requiring long-term field stability. |
| MSL Level 1, 260 °C peak reflow | Permits standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| UL 497B recognition (E136766) | Confirms compliance with safety standards for telecom and industrial equipment requiring certified surge protection. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator switching transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across input rail, clamping spikes within nanoseconds. Use Value: Limits rail voltage to ≤23.2 V during 216 A surges, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional clamp on 4–20 mA or 0–10 V output lines exposed to relay-induced inductive kickback. Use Value: Maintains signal integrity by suppressing transients up to 5000 W without adding capacitance that would distort low-bandwidth analog signals. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Front-end protection of Ethernet PHY power supplies and auxiliary bias rails in base station line cards. IC Role / Device Role / Timing Role: Primary surge arrestor upstream of LDOs and PMICs, absorbing energy from lightning-induced surges on shared power buses. Use Value: Withstands repeated 8/20 μs surges up to 1333 A while maintaining <1 ns response - critical for multi-port telecom redundancy. |
Use Scenario: Input-stage transient suppression in universal-input AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV-based primary protection, capturing residual fast-rising transients missed by slower components. Use Value: 14 V VWM aligns with 12 V nominal DC bus; 23.2 V VC ensures downstream rectifier and controller ICs remain within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-M3/84A | Unidirectional; 14 V VWM; 23.2 V VC @ 192 A; 400 W PPPM (lower energy handling) | Limited to DC-biased lines where polarity is fixed; insufficient for AC or floating signal protection. | Select only when polarity is known and surge energy is ≤400 W; not suitable for automotive load dump. |
| SMCJ14CA-T | Bidirectional; same VWM/VBR/VC specs; 1500 W PPPM (3× lower than SMC5K14CA-M3/H) | Meets basic IEC 61000-4-5 Level 2 but not Level 4; inadequate for high-energy automotive transients. | Use where cost is prioritized over surge margin; verify system-level testing confirms adequate protection margin. |
Compared with SMAJ14A-M3/84A and SMCJ14CA-T, the SMC5K14CA-M3/H delivers 12.5× higher peak pulse power and full bidirectionality - making it the only option qualified for AEC-Q101 and capable of surviving automotive load dump events without derating.
Availability
SMC5K14CA-M3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMC5K14CA-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 optoelectronics with emphasis on reliability and application-specific performance.
The SMC5K14CA-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 qualification and multi-kilowatt surge resilience.
FAQ
What is the clamping voltage of the SMC5K14CA-M3/H under a 10/1000 μs surge?
The SMC5K14CA-M3/H has a maximum clamping voltage (VC) of 23.2 V at 216 A under the standardized 10/1000 μs waveform. This value is measured per Figure 3 in Vishay Document 87024 and defines the upper voltage limit imposed on protected circuits during high-energy transients.
Is the SMC5K14CA-M3/H suitable for automotive applications?
Yes - the SMC5K14CA-M3/H is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C, making it suitable for under-hood and chassis-mounted automotive electronics. Its 5000 W peak pulse power supports load dump and ISO 7637-2 transient suppression requirements.
Does the SMC5K14CA-M3/H have polarity markings?
No - the SMC5K14CA-M3/H is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows installation in either orientation, simplifying PCB layout and reducing assembly errors.
What is the thermal resistance of the SMC5K14CA-M3/H?
The SMC5K14CA-M3/H has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W and junction-to-mount thermal resistance (RthJM) of 4.0 °C/W, measured per JEDEC 51-2A and 51-14 respectively. These values assume standard FR4 PCB mounting with 2 oz copper.
How does the SMC5K14CA-M3/H compare to standard SMAJ or SMCJ series TVS diodes?
The SMC5K14CA-M3/H delivers 5000 W peak pulse power - 12.5× higher than SMAJ14A-M3/84A (400 W) and over 3× higher than SMCJ14CA-T (1500 W). It also uniquely combines this rating with AEC-Q101 qualification and bidirectional operation, which neither alternative offers at this power level.
SMC5K14CA-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:
- -
- 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/H FAQ
1.How can I place an order for SMC5K14CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K14CA-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 SMC5K14CA-M3/H reliable?
The price and inventory of SMC5K14CA-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 SMC5K14CA-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K14CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K14CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K14CA-M3/H?
SMC5K14CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K14CA-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 SMC5K14CA-M3/H?
For technical support, including SMC5K14CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K14CA-M3/H requirements.
6.How does Aetrix verify that SMC5K14CA-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K14CA-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 SMC5K14CA-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K14CA-M3/H?
All SMC5K14CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K14CA-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 SMC5K14CA-M3/H part is unused and in its original packaging.
Return procedure for SMC5K14CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K14CA-M3/H Tags
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