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Vishay General Semiconductor - Diodes Division SMCJ14AHM3_A/H
- Part No.:
- SMCJ14AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14AHM3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,435
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Product details
Overview
SMCJ14AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, with 14 V standoff voltage (VWM), 15.6–17.2 V breakdown voltage (VBR at 1 mA), 23.2 V clamping voltage (VC) at 64.7 A peak pulse current, and 1500 W peak pulse power rating for 10/1000 µs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the SMCJ14AHM3_A/H datasheet, SMCJ14AHM3_A/H pinout, SMCJ14AHM3_A/H application, or SMCJ14AHM3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 14 V and rapidly transitions to low-impedance conduction above VBR = 15.6–17.2 V, limiting transient voltages to ≤23.2 V at 64.7 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable breakdown behavior across temperature.
Designed for surge immunity per IEC 61000-4-5 (10/1000 µs), it delivers low incremental surge resistance and fast response time (<1 ns), with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling reliable operation under repetitive surge conditions when mounted per recommended pad layout.
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 - Confirmed breakdown range ensuring predictable turn-on threshold |
| VC @ IPPM | 23.2 V at 64.7 A - Clamped voltage during 1500 W transient, defining protected circuit's max overvoltage |
| PPPM | 1500 W - Peak pulse power handling for 10/1000 µs waveform, critical for lightning/surge immunity |
| IFSM | 200 A - Surge current rating for 8.3 ms half-sine wave, supporting inrush and fault-current protection |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments |
| Leakage ID | ≤1.0 µA at VWM - Low standby current preserving signal integrity and system power budget |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Glass passivated junction | Ensures long-term stability of VBR and low parametric drift under thermal cycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, supporting high-yield assembly |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V supply rails feeding ECUs, lighting modules, and infotainment systems from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and input filter capacitor. Use Value: Limits voltage to ≤23.2 V during ISO 7637-2 Pulse 5a (load dump), preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers connected to IGBT/MOSFET half-bridges in variable-frequency drives. IC Role / Device Role / Timing Role: Transient suppressor on motor phase inputs and auxiliary power rails exposed to commutation spikes. Use Value: Clamps 1500 W surges within nanoseconds, maintaining gate drive integrity and avoiding false triggering of overvoltage protection circuits. |
| Telecom Power Supply Inputs | Automotive Sensor Signal Lines |
Use Scenario: Shielding AC/DC and DC/DC converter inputs in base station power supplies from lightning-induced surges on primary-side rectifiers. IC Role / Device Role / Timing Role: Primary-side TVS on bulk capacitor input, coordinated with MOVs and fuses. Use Value: Withstands repeated 10/1000 µs surges up to 64.7 A while maintaining <1 µA leakage at 14 V, minimizing standby loss. | Use Scenario: Protecting LIN/CAN transceiver I/O pins and analog sensor outputs (e.g., pressure, temperature) in vehicle cabin modules. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential or single-ended signal traces adjacent to connectors. Use Value: Fast <1 ns response and 23.2 V clamping preserve signal fidelity for 5 V or 3.3 V logic interfaces during ESD events per ISO 10605. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14AHE3_A/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range | Not suitable for 1500 W surge environments; limited to lower-energy transients | Select only when space-constrained and surge energy is ≤400 W |
| SMCJ14AHE3_A/H | Same electrical specs but commercial-grade (non-AEC-Q101), E3 suffix instead of HM3 | Lacks automotive qualification; not approved for under-hood or safety-critical systems | Acceptable for industrial/commercial designs where AEC-Q101 is not mandated |
Compared with SMAJ14AHE3_A/H and SMCJ14AHE3_A/H, the SMCJ14AHM3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction-making it the only choice for automotive-grade 14 V rail protection requiring full compliance and robustness.
Availability
SMCJ14AHM3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, telecom power supply inputs, and automotive sensor signal lines requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMCJ14AHM3_A/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, efficiency, and application-specific performance.
The SMCJ series is designed for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom-where robust clamping, AEC-Q101 validation, and consistent surge handling are mandatory.
FAQ
What is the clamping voltage of the SMCJ14AHM3_A/H under maximum rated surge current?
The SMCJ14AHM3_A/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 64.7 A for a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMCJ14AHM3_A/H maintains this clamping performance across its qualified operating temperature range.
Is the SMCJ14AHM3_A/H qualified for automotive applications?
Yes, the SMCJ14AHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is rated for operation from –55 °C to +150 °C and validated for use in engine control units, body electronics, and ADAS subsystems. The SMCJ14AHM3_A/H meets all stress tests required by AEC-Q101, including temperature cycling, humidity bias, and surge robustness.
What does the "_A/H" suffix mean in SMCJ14AHM3_A/H?
The "_A/H" suffix in SMCJ14AHM3_A/H denotes packaging configuration: "A" indicates tape-and-reel format, and "H" specifies a 7-inch diameter reel containing 850 units. This ordering code aligns with Vishay's preferred package code system and ensures compatibility with standard SMT pick-and-place equipment. The SMCJ14AHM3_A/H is supplied in this format with full traceability and MSL Level 1 handling assurance.
How does the SMCJ14AHM3_A/H compare to bidirectional TVS diodes like SMCJ14CA?
The SMCJ14AHM3_A/H is unidirectional and intended for DC rail protection where polarity is fixed, offering lower leakage (<1.0 µA at 14 V) and higher forward surge capability (IFSM = 200 A). In contrast, SMCJ14CA is bidirectional, suited for AC or differential signal lines but with doubled ID limit and no forward surge rating. The SMCJ14AHM3_A/H cannot substitute for SMCJ14CA in AC-coupled applications due to polarity dependence.
What PCB layout guidance applies to the SMCJ14AHM3_A/H for optimal surge performance?
For optimal surge performance, the SMCJ14AHM3_A/H must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Short, wide traces to ground and protected line minimize inductance; thermal vias under pads improve heat dissipation. The SMCJ14AHM3_A/H achieves rated PPPM only with this layout-reduced pad area degrades clamping and risks thermal failure during repeated surges.
SMCJ14AHM3_A/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):
- 64.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ14AHM3_A/H FAQ
1.How can I place an order for SMCJ14AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14AHM3_A/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 SMCJ14AHM3_A/H reliable?
The price and inventory of SMCJ14AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ14AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14AHM3_A/H?
SMCJ14AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14AHM3_A/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 SMCJ14AHM3_A/H?
For technical support, including SMCJ14AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14AHM3_A/H requirements.
6.How does Aetrix verify that SMCJ14AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ14AHM3_A/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 SMCJ14AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ14AHM3_A/H?
All SMCJ14AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14AHM3_A/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 SMCJ14AHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ14AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14AHM3_A/H Tags
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