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Vishay General Semiconductor - Diodes Division SMC5K14A-M3/H
- Part No.:
- SMC5K14A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K14A-M3/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,016
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Product details
Overview
SMC5K14A-M3/H 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 a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 23.2 V clamping voltage (VC) at 216 A peak pulse current (IPPM), and 5000 W peak pulse power (10/1000 μs). It is widely used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power systems.
For engineers reviewing the SMC5K14A-M3/H datasheet, SMC5K14A-M3/H pinout, SMC5K14A-M3/H application, or SMC5K14A-M3/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RthJA = 90 °C/W), and compliance with IEC 61000-4-2 ESD (30 kV contact/air).
Technical Context
The SMC5K14A-M3/H operates as a silicon avalanche diode that enters conduction when reverse voltage exceeds its breakdown threshold, diverting transient energy to ground. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of inductive switching spikes and lightning-induced surges on DC power rails and signal paths.
It is rated for -55 °C to +150 °C junction temperature, meets MSL Level 1 per J-STD-020, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The "M3" suffix confirms halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - precise avalanche onset range ensures predictable turn-on behavior |
| VC @ IPPM | 23.2 V at 216 A (10/1000 μs) - low clamping voltage limits stress on downstream components |
| PPPM | 5000 W (10/1000 μs) - high surge power handling suitable for automotive load-dump and ISO 7637-2 transients |
| TJ max. | +150 °C - enables reliable operation in under-hood and industrial ambient environments |
| ESD immunity | 30 kV HBM (contact/air) per IEC 61000-4-2 - protects against electrostatic discharge during handling and system operation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with UL 94 V-0 flammability rating; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; connected to protected circuit's low-side reference (e.g., GND) | Provides return path for clamped surge current; must be routed with low-inductance connection to ground plane |
| Cathode | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., 12 V rail or signal) | Acts as the input node for transient energy; placement adjacent to IC/power device minimizes clamping loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional configuration | Protects only against negative transients on positive rails-ideal for DC power line applications without bidirectional signal integrity concerns |
| 5000 W peak pulse power (10/1000 μs) | Withstands severe automotive load-dump events (ISO 16750-2) and industrial inductive kickback without degradation |
| AEC-Q101 qualified (base P/NHM3 only) | SMC5K14A-M3/H is *not* AEC-Q101 qualified; this qualification applies only to HM3-suffixed variants (e.g., SMC5K14AHM3_A/H) for automotive use |
| Low RthJA = 90 °C/W | Enables stable thermal performance on standard FR4 PCBs with 2 oz copper, supporting sustained reliability in high-temperature enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (up to 35 V, 400 ms) and alternator ripple. IC Role / Device Role / Timing Role: TVS diode placed at power entry point to clamp overvoltage before it reaches LDOs, microcontrollers, and CAN transceivers. Use Value: Clamps to 23.2 V at 216 A, limiting stress on downstream 3.3 V/5 V regulators and ensuring system-level ISO 16750-2 compliance. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors from ESD and cable-coupled noise. IC Role / Device Role / Timing Role: Unidirectional TVS installed between signal and ground, directly at connector interface. Use Value: 30 kV IEC 61000-4-2 ESD immunity and sub-1 ns response prevent latch-up or damage to precision op-amps and ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
Use Scenario: Safeguarding AC/DC adapter primary-side controllers and secondary-side rectifiers from surge events on mains-derived DC bus. IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to absorb line-to-ground transients induced by nearby switching loads. Use Value: 5000 W pulse rating handles repetitive 10/1000 μs surges per IEC 61000-4-5 Level 3, extending adapter lifetime in shared building circuits. | Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced surges entering via long outdoor cabling. IC Role / Device Role / Timing Role: Installed on each branch output of DC-DC converters feeding remote radio units or baseband processors. Use Value: 23.2 V clamping voltage ensures safe operation below -48 V system absolute maximum ratings while maintaining low leakage (<2 μA at 14 V). |
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 | Lower PPPM (400 W vs. 5000 W); SMA package (smaller footprint, higher RthJA = 150 °C/W) | Suitable for low-energy signal-line protection only-not rated for power rail transients | Select SMC5K14A-M3/H when protecting 12 V/24 V power domains; choose SMAJ14A-M3/84A only for space-constrained, low-power signal nodes. |
| SMC5K14AHM3_A/H | Identical electrical specs; adds AEC-Q101 qualification and HM3 suffix (halogen-free + automotive grade) | Required for automotive production programs needing PPAP documentation and qualification traceability | Choose SMC5K14AHM3_A/H for Tier 1 automotive designs; SMC5K14A-M3/H remains valid for industrial/commercial applications where AEC-Q101 is not mandated. |
Compared with SMAJ14A-M3/84A, the SMC5K14A-M3/H delivers 12.5× higher surge power handling and superior thermal dissipation-critical for power rail protection. Against SMC5K14AHM3_A/H, it shares identical clamping and voltage characteristics but lacks automotive qualification, making it cost-optimized for non-automotive industrial use.
Availability
SMC5K14A-M3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC distribution requiring stable component supply and consistent surge performance across production batches.
Supply support for SMC5K14A-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, ruggedness, and application-specific validation.
The SMC5K14A-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for demanding transient suppression in automotive, industrial, and telecom infrastructure where robustness against ISO 7637-2, IEC 61000-4-5, and ESD events is mandatory.
FAQ
What is the clamping voltage of the SMC5K14A-M3/H under a 10/1000 μs surge?
The SMC5K14A-M3/H has a maximum clamping voltage (VC) of 23.2 V at 216 A peak pulse current 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. The SMC5K14A-M3/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection in harsh environments.
Is the SMC5K14A-M3/H AEC-Q101 qualified?
No, the SMC5K14A-M3/H is not AEC-Q101 qualified. AEC-Q101 qualification applies only to variants with the "HM3" suffix (e.g., SMC5K14AHM3_A/H), which are explicitly designated for automotive use. The SMC5K14A-M3/H carries the "M3" suffix indicating halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker resistance-but no automotive qualification. Engineers requiring AEC-Q101 must select the HM3-suffixed part number instead of SMC5K14A-M3/H.
What is the package type and mounting orientation of the SMC5K14A-M3/H?
The SMC5K14A-M3/H uses the SMC (DO-214AB) surface-mount package, with mechanical dimensions per Vishay's outline drawing: length 7.11 mm, width 6.22 mm, height 2.62 mm. The cathode is marked by a visible color band on the body; during PCB layout, the cathode terminal must connect to the line being protected (e.g., 12 V rail), while the anode connects to ground. Proper orientation is essential-reverse placement renders the device ineffective for unidirectional surge suppression.
How does the SMC5K14A-M3/H compare to the SMAJ14A-M3/84A in surge handling capability?
The SMC5K14A-M3/H delivers 5000 W peak pulse power (10/1000 μs), whereas the SMAJ14A-M3/84A is rated for only 400 W-over 12× less. This difference stems from larger die size, lower thermal resistance (RthJA = 90 °C/W vs. 150 °C/W), and optimized SMC package construction. For applications involving automotive load-dump or industrial inductive switching, the SMC5K14A-M3/H is required; the SMAJ14A-M3/84A is limited to low-energy signal-line protection. Both share the same VWM (14 V) and VBR range, but their surge capacity is not interchangeable.
What is the maximum reverse leakage current of the SMC5K14A-M3/H at its stand-off voltage?
The SMC5K14A-M3/H exhibits a maximum reverse leakage current of 2.0 μA at its 14 V stand-off voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensing circuits. Leakage remains within specification up to +125 °C, increasing only marginally due to thermal effects-verified in Vishay's electrical characteristics table (Document 87742, page 2). Designers can rely on this value when calculating total system quiescent current using SMC5K14A-M3/H.
SMC5K14A-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):
- 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/H FAQ
1.How can I place an order for SMC5K14A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K14A-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 SMC5K14A-M3/H reliable?
The price and inventory of SMC5K14A-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 SMC5K14A-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K14A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K14A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K14A-M3/H?
SMC5K14A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K14A-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 SMC5K14A-M3/H?
For technical support, including SMC5K14A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K14A-M3/H requirements.
6.How does Aetrix verify that SMC5K14A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K14A-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 SMC5K14A-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K14A-M3/H?
All SMC5K14A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K14A-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 SMC5K14A-M3/H part is unused and in its original packaging.
Return procedure for SMC5K14A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K14A-M3/H Tags
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