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Vishay General Semiconductor - Diodes Division SMCJ14AHE3_A/I
- Part No.:
- SMCJ14AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14AHE3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,591
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Product details
Overview
SMCJ14AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 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 (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ14AHE3_A/I datasheet, SMCJ14AHE3_A/I pinout, SMCJ14AHE3_A/I application, or SMCJ14AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
The SMCJ14AHE3_A/I operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to ESD and lightning-induced transients. Its clamping behavior is defined by a well-controlled breakdown threshold and low dynamic impedance, enabling precise voltage limiting during surge events up to 1500 W.
Designed for unidirectional DC protection, it exhibits reverse leakage ≤1.0 µA at 14 V standoff and forward voltage of 3.5 V at 100 A (per spec note), with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - supporting reliable operation under repeated surge stress 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 - guaranteed avalanche onset range defining turn-on consistency |
| VC @ IPPM | 23.2 V at 64.7 A - clamped voltage during 1500 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SMCJ14AHE3_A/I uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 rated compound, and cathode band marking for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased protection configuration | Connected to protected line (e.g., +12 V rail); clamps to cathode when transient exceeds VWM |
| Anode | Reference/ground return path | Connected to system ground or low-impedance return plane; completes clamping current path during surge |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Glass-passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| Low incremental surge resistance | Enables tighter clamping (23.2 V at 64.7 A) and reduced let-through energy to protected ICs |
| MSL Level 1 rating | Supports standard lead-free reflow without preconditioning or dry-pack requirements |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) in properly laid out PCBs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges above 14 V. Use Value: Limits peak voltage to 23.2 V during 64.7 A transients, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on 0–5 V or 4–20 mA signal paths to suppress sub-100 ns transients. Use Value: Sub-1 ns response ensures clamping before sensitive ADC inputs are overstressed, preserving measurement integrity. |
| DC Motor Drive Board Protection | Telecom Power Supply Input |
Use Scenario: Safeguarding H-bridge gate drivers and logic from inductive kickback during motor commutation. IC Role / Device Role / Timing Role: Mounted across motor supply rails to absorb flyback energy from brushed DC motors. Use Value: 1500 W PPPM rating handles repetitive 100–500 ms switching surges without degradation. | Use Scenario: Front-end protection of 48 V telecom rectifier modules against lightning-induced surges on input lines. IC Role / Device Role / Timing Role: Primary unidirectional clamping device upstream of bulk capacitors and PFC controllers. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure reliability in high-ambient telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/57T | Lower PPPM (400 W), SMA package (smaller thermal mass), same VWM/VBR range | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not load dump | Select when board space is constrained and surge energy is limited to <50 mJ |
| SMCJ14CAHE3_A/I | Bidirectional variant; symmetric clamping in both polarities; same PPPM/package | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus) | Choose for bidirectional protection where negative transients must also be suppressed |
Compared with SMAJ14A-E3/57T and SMCJ14CAHE3_A/I, the SMCJ14AHE3_A/I delivers 3.75× higher surge power handling than SMAJ14A while maintaining identical VWM and AEC-Q101 qualification - making it the preferred choice for automotive and industrial DC rail protection where energy levels exceed 100 mJ.
Availability
SMCJ14AHE3_A/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom rectifier input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ14AHE3_A/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 and application-specific performance.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMCJ14AHE3_A/I at its rated peak pulse current?
The SMCJ14AHE3_A/I has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current (IPPM) of 64.7 A under the 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 23.2 V during worst-case surge events - critical for protecting 24 V-tolerant ICs in automotive and industrial systems. The SMCJ14AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is SMCJ14AHE3_A/I qualified for automotive applications?
Yes, the SMCJ14AHE3_A/I carries AEC-Q101 qualification, 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, highly accelerated life testing (HALT), and humidity bias HTRB - all performed per the AEC-Q101 standard. The SMCJ14AHE3_A/I is explicitly designated for automotive use via its "HE3" suffix and revision code "A", as documented in Vishay's ordering information table.
What is the thermal resistance of SMCJ14AHE3_A/I, and how does it affect PCB layout?
The SMCJ14AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This means effective heat dissipation requires adherence to Vishay's specified pad layout - undersized pads increase RθJA and risk thermal runaway during repetitive surges. The SMCJ14AHE3_A/I's thermal performance directly impacts its ability to sustain multiple 1500 W pulses without exceeding 150 °C junction temperature.
How does the SMCJ14AHE3_A/I differ from bidirectional variants like SMCJ14CAHE3_A/I?
The SMCJ14AHE3_A/I is unidirectional and clamps only positive transients relative to ground, with cathode marked by a band; SMCJ14CAHE3_A/I is bidirectional and clamps symmetrical surges in both directions, with no polarity marking. Both share identical PPPM (1500 W), package (SMC), and AEC-Q101 qualification, but the SMCJ14AHE3_A/I offers lower leakage (<1.0 µA at 14 V) and is optimized for DC rail protection, whereas SMCJ14CAHE3_A/I suits AC or differential signal lines like CAN or RS-485. The SMCJ14AHE3_A/I cannot replace SMCJ14CAHE3_A/I in bidirectional applications.
What packaging and reel options are available for SMCJ14AHE3_A/I?
The SMCJ14AHE3_A/I is supplied in 13" diameter plastic tape and reel format (package code "I") with a base quantity of 3500 units per reel, as specified in Vishay's ordering information. It uses 8 mm tape width and meets J-STD-002/JESD 22-B102 solderability standards. The "HE3" suffix confirms RoHS-compliance and AEC-Q101 qualification, while "_A/I" denotes revision A and reel type I. No tube or tray options are listed for this variant - the SMCJ14AHE3_A/I is exclusively available in this reel configuration for automated SMT placement.
SMCJ14AHE3_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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ14AHE3_A/I FAQ
1.How can I place an order for SMCJ14AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14AHE3_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 SMCJ14AHE3_A/I reliable?
The price and inventory of SMCJ14AHE3_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 SMCJ14AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ14AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14AHE3_A/I?
SMCJ14AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14AHE3_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 SMCJ14AHE3_A/I?
For technical support, including SMCJ14AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ14AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ14AHE3_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 SMCJ14AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ14AHE3_A/I?
All SMCJ14AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14AHE3_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 SMCJ14AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ14AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14AHE3_A/I Tags
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