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Vishay General Semiconductor - Diodes Division SMCJ14AHE3/57T
- Part No.:
- SMCJ14AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14AHE3/57T.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,904
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Product details
Overview
SMCJ14AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 14 V standoff voltage (VWM), 23.2 V maximum clamping voltage at 64.7 A peak pulse current (10/1000 µs), and 1500 W peak pulse power rating. Used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMCJ14AHE3/57T datasheet, SMCJ14AHE3/57T pinout, SMCJ14AHE3/57T application, or SMCJ14AHE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1500 W surge capability, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ14AHE3/57T employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its breakdown voltage range is 15.6–17.2 V at 1 mA test current, with temperature coefficient of +0.087 %/°C - enabling stable clamping across -55 °C to +150 °C operating junction range.
Designed per ANSI/IEEE C62.35 standards, it delivers bidirectional-capable protection architecture only when configured as CA variant; the HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification for automotive-grade reliability, including JESD 201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 15.6 V / 17.2 V at 1 mA - ensures reliable turn-on above system operating voltage while avoiding false triggering. |
| VC @ IPPM | 23.2 V at 64.7 A (10/1000 µs) - limits downstream voltage stress during ESD or load-dump events. |
| PPPM | 1500 W - supports high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in automotive ECUs. |
| TJ max | +150 °C - enables operation in under-hood environments and industrial motor drives without derating. |
| RθJA | 75 °C/W - requires minimum 8.0 mm × 8.0 mm copper pad per terminal for full power dissipation at TA = 50 °C. |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive inrush or fault currents without degradation. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode during overvoltage events. |
| Cathode | Protected line input | Banded end connects to supply rail or signal line needing protection; conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, and HTRB - suitable for engine control, ADAS, and body modules. |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity exposure. |
| Low profile SMC package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment (0.320" × 0.246" footprint). |
| 1500 W peak pulse power | Provides robust immunity against ISO 16750-2 load dump and IEC 61000-4-5 surge events without external heat sinking. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak temperature up to 260 °C - eliminates baking requirements prior to assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V power inputs in engine control units (ECUs) against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges to <23.2 V, diverting up to 64.7 A away from downstream DC/DC converters and microcontrollers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies while maintaining compliance with automotive EMC requirements. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from inductive switching noise. IC Role / Device Role / Timing Role: Placed across signal and ground lines to suppress sub-100 ns EFT bursts and electrostatic discharges up to ±15 kV contact. Use Value: Maintains signal integrity below 1 mV offset shift and avoids false triggering in 16-bit ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
|
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier outputs from lightning-induced surges entering via mains input. IC Role / Device Role / Timing Role: Positioned after bridge rectifier to clamp 10/1000 µs transients before bulk capacitor, limiting voltage overshoot to ≤23.2 V. Use Value: Eliminates need for secondary-stage MOVs, reducing BOM count and improving failure mode predictability. |
Use Scenario: Protecting PoE-powered network switches from longitudinal surges on 48 V DC feeder lines per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: Mounted between DC feed and Ethernet PHY interface to absorb common-mode energy up to 1500 W without degrading 100BASE-TX signal integrity. Use Value: Enables single-point protection with <1 pF junction capacitance impact on differential impedance matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHE3/52T | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for space-constrained consumer devices with lower surge threat profiles (e.g., USB-C PD adapters) | Select when board area is limited and peak surge energy does not exceed 600 W. |
| SMCJ14CAHE3/57T | Bidirectional configuration; same VWM (14 V), symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where negative transients must also be suppressed | Choose for RS-485, CAN bus, or audio line protection where polarity reversal is possible. |
Compared with SMBJ14AHE3/52T, the SMCJ14AHE3/57T provides 2.5× higher surge capacity and better thermal performance; versus SMCJ14CAHE3/57T, it offers tighter clamping for unidirectional DC rails but cannot handle reverse-polarity surges.
Availability
SMCJ14AHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power feeds, and consumer power adapters requiring stable component supply and AEC-Q101 traceability.
Supply support for SMCJ14AHE3/57T 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parametric stability are critical.
FAQ
What is the clamping voltage of SMCJ14AHE3/57T at its rated peak pulse current?
The SMCJ14AHE3/57T has a maximum clamping voltage (VC) of 23.2 V at 64.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMCJ14AHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCJ14AHE3/57T qualified for automotive applications?
Yes, the SMCJ14AHE3/57T carries the HE3 suffix, indicating RoHS-compliance and full AEC-Q101 qualification. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and high-temperature reverse bias (HTRB), making it suitable for under-hood and chassis-mounted automotive electronics. The SMCJ14AHE3/57T is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What package type does SMCJ14AHE3/57T use, and what are its mounting requirements?
The SMCJ14AHE3/57T uses the SMC (DO-214AB) surface-mount package with dimensions 7.11 mm × 6.22 mm × 2.62 mm. For full-rated power dissipation, it requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per Vishay's recommended layout. The SMCJ14AHE3/57T meets J-STD-020 MSL Level 1 and is compatible with standard lead-free reflow profiles peaking at 260 °C.
How does the breakdown voltage tolerance of SMCJ14AHE3/57T affect circuit design?
The SMCJ14AHE3/57T has a specified breakdown voltage range of 15.6 V to 17.2 V at 1 mA test current, corresponding to ±5.7% tolerance around the nominal 16.4 V midpoint. This tolerance must be accounted for when setting the margin between VWM (14 V) and the protected IC's absolute maximum rating. The SMCJ14AHE3/57T's +0.087 %/°C temperature coefficient further requires derating in high-temperature environments.
Can SMCJ14AHE3/57T replace older SMCJ14A-E3/57T parts in existing designs?
Yes, the SMCJ14AHE3/57T is a direct replacement for SMCJ14A-E3/57T with identical electrical specifications, package, and pinout. The HE3 suffix adds AEC-Q101 qualification and updated RoHS compliance without altering performance parameters. No PCB or schematic changes are required when upgrading to SMCJ14AHE3/57T, and the SMCJ14AHE3/57T maintains full backward compatibility in all legacy applications.
SMCJ14AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMCJ14AHE3/57T FAQ
1.How can I place an order for SMCJ14AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14AHE3/57T 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 SMCJ14AHE3/57T reliable?
The price and inventory of SMCJ14AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ14AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14AHE3/57T?
SMCJ14AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14AHE3/57T 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 SMCJ14AHE3/57T?
For technical support, including SMCJ14AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14AHE3/57T requirements.
6.How does Aetrix verify that SMCJ14AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ14AHE3/57T 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 SMCJ14AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ14AHE3/57T?
All SMCJ14AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14AHE3/57T, 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 SMCJ14AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ14AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14AHE3/57T Tags
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