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Vishay General Semiconductor - Diodes Division SMC3K14CAHM3_A/I
- Part No.:
- SMC3K14CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K14CAHM3_A/I.pdf
- Description:
- 3KW, 14V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,662
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Product details
Overview
SMC3K14CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 15.6–17.2 V breakdown voltage, and 23.2 V clamping voltage at 1000 A. It protects MOSFETs, ICs, and sensor signal lines in automotive powertrain and body electronics against ISO 7637-2 and ISO 16750-2 transients.
For engineers reviewing the SMC3K14CAHM3_A datasheet, SMC3K14CAHM3_A pinout, SMC3K14CAHM3_A application, or SMC3K14CAHM3_A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 175 °C junction temperature rating, UL 497B safety recognition, and compliance with IEC 61000-4-2 ESD (30 kV contact/air).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages and diverting surge current away from sensitive downstream circuitry. Its low incremental surge resistance (15.5 mΩ typical) and fast response ensure minimal overshoot during 8/20 μs and 10/1000 μs waveforms.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and supports load-dump immunity per ISO 16750-2 Pulse b up to 101 V, 400 ms duration. The halogen-free, RoHS-compliant SMC package enables reflow soldering per J-STD-002 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 15.6–17.2 V at 1.0 mA test current - defines precise conduction onset threshold for bidirectional clamping |
| Stand-off Voltage (VWM) | 14 V - maximum continuous reverse working voltage before leakage exceeds 2.0 μA |
| Clamping Voltage (VC) | 23.2 V at 1000 A (10/1000 μs) - actual voltage seen by protected circuit under full-rated surge |
| Peak Pulse Power (PPPM) | 3000 W (10/1000 μs) - sustained energy-handling capacity without failure under standardized surge waveform |
| Junction Temperature Range | −55 °C to +175 °C - enables operation in under-hood automotive environments and industrial motor drives |
| ESD Rating | ±30 kV per IEC 61000-4-2 (contact/air) - provides robust electrostatic discharge immunity for exposed interfaces |
| Package | SMC (DO-214AB), 7.75 × 6.22 × 2.62 mm - industry-standard surface-mount outline with matte tin-plated leads |
Pinout & Package
SMC3K14CAHM3_A uses the SMC (DO-214AB) package: a molded plastic case with two coplanar, matte tin-plated terminals. Polarity is unmarked due to bidirectional symmetry; either terminal may serve as anode or cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (Bidirectional) | Surge current path | Both terminals conduct equally in either direction - no polarity marking required; symmetric clamping behavior |
| Case / Body | Thermal interface | Non-electrical; thermally coupled to PCB copper pour via bottom surface for RthJM = 4.0 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules |
| UL 497B recognized (E136766) | Meets safety standards for telecom and industrial signal-line protection without additional isolation |
| 30 kW surge rating (8/20 μs) | Supports high-current lightning-induced surges in telecom base stations and industrial Ethernet ports |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance for global automotive OEMs and EU industrial equipment |
Applications
| Automotive Powertrain ECUs | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver pins from load dump and inductive switching spikes in 12 V engine control units. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across protected node and ground. Use Value: Clamps transients to ≤23.2 V while handling 1000 A pulses, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential signal pairs (e.g., RS-485, 4–20 mA loops). Use Value: Maintains signal integrity below 23.2 V clamping level during 8/20 μs surges up to 30 kW, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| Automotive Body Electronics | Telecom Interface Protection |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs in door modules and lighting control units from battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Standoff-mode protector operating at 14 V nominal supply, activating only during overvoltage events. Use Value: Delivers <2.0 μA leakage at 14 V, minimizing standby current drain while enabling rapid response to −150 V ISO 7637-2 Pulse 1 events. |
Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of GDT or secondary TVS devices in multi-stage architecture. Use Value: Withstands 30 kV IEC 61000-4-2 ESD and 30 kW 8/20 μs surges, reducing downstream component stress and improving system-level immunity certification pass rate. |
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 | Lower peak pulse power (400 W), SMA package (smaller footprint, higher thermal resistance) | Suitable for low-energy consumer electronics; insufficient for automotive load dump | Select SMC3K14CAHM3_A when ≥3000 W surge handling and AEC-Q101 compliance are mandatory |
| SMCJ14CA | Same SMC package and 3000 W rating, but not AEC-Q101 qualified or UL 497B recognized | Acceptable for industrial non-automotive use where automotive qualification is not required | Choose SMC3K14CAHM3_A for automotive Tier-1 BOMs requiring full safety and reliability certification |
Compared with SMAJ14CA and SMCJ14CA, SMC3K14CAHM3_A uniquely combines 3000 W surge capability, AEC-Q101 qualification, UL 497B safety listing, and halogen-free construction - making it the only option among the three qualified for safety-critical automotive powertrain and body control modules.
Availability
SMC3K14CAHM3_A is available at Aetrix Electronics and suitable for automotive powertrain ECUs, industrial sensor interfaces, and telecom infrastructure requiring stable component supply, long-term lifecycle support, and certified surge protection performance.
Supply support for SMC3K14CAHM3_A 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMC3KxxCAHM3_A series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing high-energy clamping, low leakage, and robust thermal performance in the SMC package.
FAQ
What is the clamping voltage of SMC3K14CAHM3_A at its rated peak pulse current?
The SMC3K14CAHM3_A clamps to 23.2 V at 1000 A peak pulse current under the 10/1000 μs waveform. This value is measured and guaranteed per Vishay's datasheet (Document Number 98241, Rev. 09-Jan-2024), ensuring predictable voltage limiting during surge events without exceeding safe thresholds for downstream 3.3 V or 5 V logic.
Is SMC3K14CAHM3_A qualified for automotive applications?
Yes, SMC3K14CAHM3_A is AEC-Q101 qualified and explicitly listed in Vishay's automotive-grade TVS portfolio. It has passed stress tests including temperature cycling, humidity bias, and high-temperature operating life - making it suitable for deployment in engine control units, body control modules, and ADAS sensor systems.
What does the "HM3_A" suffix indicate in SMC3K14CAHM3_A?
The "HM3_A" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements. It also confirms compliance with MSL Level 1 and AEC-Q101 qualification - all verified in the official Vishay datasheet for SMC3K14CAHM3_A.
Can SMC3K14CAHM3_A be used in bidirectional signal line protection?
Yes, SMC3K14CAHM3_A is inherently bidirectional and requires no polarity marking. It provides symmetrical clamping for both positive and negative transients - ideal for protecting differential buses like CAN, LIN, RS-485, and analog sensor outputs where voltage polarity reverses during normal operation or fault conditions.
What is the maximum operating junction temperature for SMC3K14CAHM3_A?
The maximum operating junction temperature for SMC3K14CAHM3_A is +175 °C, as specified in the Absolute Maximum Ratings table of the Vishay datasheet. This rating enables reliable operation in under-hood automotive locations and high-ambient industrial environments when mounted on appropriate PCB copper area per JEDEC 51-14 thermal guidelines.
SMC3K14CAHM3_A/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):
- 129A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K14CAHM3_A/I FAQ
1.How can I place an order for SMC3K14CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K14CAHM3_A/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 SMC3K14CAHM3_A/I reliable?
The price and inventory of SMC3K14CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K14CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K14CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K14CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K14CAHM3_A/I?
SMC3K14CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K14CAHM3_A/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 SMC3K14CAHM3_A/I?
For technical support, including SMC3K14CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K14CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K14CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K14CAHM3_A/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 SMC3K14CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K14CAHM3_A/I?
All SMC3K14CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K14CAHM3_A/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 SMC3K14CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMC3K14CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K14CAHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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