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Vishay General Semiconductor - Diodes Division SMCJ14CA-E3/9AT
- Part No.:
- SMCJ14CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14CA-E3/9AT.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ14CA-E3/9AT 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 1500 W peak pulse power rating, 14 V standoff voltage (VWM), and 23.2 V maximum clamping voltage (VC) at 64.7 A peak pulse current. It protects sensitive signal lines and power rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the SMCJ14CA-E3/9AT datasheet, SMCJ14CA-E3/9AT pinout, SMCJ14CA-E3/9AT application, or SMCJ14CA-E3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, 1500 W 10/1000 µs surge capability, -55 °C to +150 °C operating junction temperature, RoHS-compliant matte tin terminations, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 14 V), but triggers into low-impedance conduction when transient voltage exceeds its 15.6–17.2 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable parametric performance across temperature and life cycles.
The device uses an avalanche breakdown mechanism with <0.087 %/°C temperature coefficient of VBR, enabling predictable clamping behavior over -55 °C to +150 °C. Its SMC package provides 75 °C/W junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads, supporting reliable power dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe working margin below clamping threshold. |
| VBR min/max | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown voltage range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 23.2 V at 64.7 A - Clamping voltage under 10/1000 µs surge; limits protected circuit voltage stress during worst-case transients. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; enables robust protection against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 0.320" body length and matte tin-plated leads compliant with J-STD-002 solderability. |
| RoHS | E3 suffix - Fully RoHS-compliant commercial-grade construction with halogen-free molding compound option available (M3). |
Pinout & Package
SMCJ14CA-E3/9AT is a two-terminal bidirectional TVS diode in SMC (DO-214AB) package. No polarity marking is present on bidirectional variants; both terminals are functionally symmetric. The package features a low-profile, surface-mountable outline with center cathode band omitted per bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; no fixed polarity reference. |
| Cathode | Transient return path (bidirectional) | Acts as anode during positive transients and cathode during negative transients; electrically identical to Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions-enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W surge rating | Handles 10/1000 µs transients up to 64.7 A-meets stringent automotive load-dump and inductive-switching immunity requirements per ISO 7637-2. |
| Low clamping ratio | VC/VWM = 1.66-minimizes voltage overshoot during clamping, reducing stress on downstream ICs such as CAN transceivers or ADC front-ends. |
| AEC-Q101 readiness | E3 suffix supports drop-in replacement with HE3 variant for automotive applications-enables qualification path without redesign when upgrading to qualified grade. |
| MSL Level 1 | Rated for reflow peak of 260 °C-compatible with standard lead-free assembly processes without moisture sensitivity handling. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensor outputs from battery line transients and ESD in engine control modules. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and ground, triggered within picoseconds of overvoltage event. Use Value: Limits voltage seen by sensor ASIC to ≤23.2 V during 10/1000 µs surges, preventing latch-up or gate oxide damage while maintaining signal integrity. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals, conducting surge energy to chassis ground without polarity constraints. Use Value: Enables reliable operation under repeated 1 kV/500 A surge tests per IEC 61000-4-5, eliminating need for external polarity-selective protection networks. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter |
Use Scenario: Guarding Ethernet PHY interface pins and PoE detection circuitry against lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level TVS placed at connector entry point, clamping common-mode transients before they reach magnetics or PHY IC. Use Value: Withstands 1500 W peak power and exhibits <1 ns response time-prevents data corruption and PHY latch-up during fast-rising transients. | Use Scenario: Suppressing differential-mode noise and switching spikes on secondary-side DC output rails of AC/DC adapters. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp across +VOUT and GND, absorbing MOSFET turn-off spikes. Use Value: Maintains EMI compliance by limiting high-frequency ringing amplitude without loading regulated output under steady-state conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC14CA | Lower PPPM (600 W), same VWM/VC, smaller SMA package | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4 only. |
| SMCJ14A-E3/9AT | Unidirectional version with cathode band marking; otherwise identical electrical specs and package | Requires correct polarity placement; not usable on AC or floating lines | Choose only for DC-biased rails where polarity is fixed and layout allows orientation control. |
Compared with SAC14CA and SMCJ14A-E3/9AT, the SMCJ14CA-E3/9AT delivers full 1500 W bidirectional surge immunity in the industry-standard SMC footprint-making it the optimal choice for automotive and industrial designs requiring polarity-agnostic, high-power transient protection without PCB redesign.
Availability
SMCJ14CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card protection, and consumer power adapter EMI filtering requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ14CA-E3/9AT 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, power efficiency, and automotive-grade qualification.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SMCJ14CA-E3/9AT at its rated peak pulse current?
The SMCJ14CA-E3/9AT has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated 10/1000 µs peak pulse current of 64.7 A. This value is measured per ANSI/IEEE C62.35 standards and confirmed in Vishay's datasheet revision 09-Jan-2024. The SMCJ14CA-E3/9AT maintains this clamping performance bidirectionally, making it suitable for protecting balanced or floating signal paths where polarity cannot be assumed.
Is SMCJ14CA-E3/9AT RoHS-compliant and lead-free?
Yes, the SMCJ14CA-E3/9AT carries the "E3" suffix, indicating full RoHS compliance and lead-free construction per EU Directive 2011/65/EU. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the molding compound satisfies UL 94 V-0 flammability rating. The SMCJ14CA-E3/9AT does not contain brominated flame retardants or halogens above threshold limits defined in Vishay document 99912.
Can SMCJ14CA-E3/9AT replace unidirectional SMCJ14A-E3/9AT in existing designs?
No direct replacement is guaranteed without validation: although SMCJ14CA-E3/9AT shares identical VWM, VBR, VC, and package dimensions with SMCJ14A-E3/9AT, its bidirectional behavior eliminates polarity marking and alters circuit-level grounding strategy. The SMCJ14CA-E3/9AT may be substituted only if the application involves AC-coupled, floating, or reversibly biased signals-and layout verification confirms no unintended forward-conduction paths exist.
What is the maximum operating temperature for SMCJ14CA-E3/9AT?
The SMCJ14CA-E3/9AT has a specified operating junction temperature range of -55 °C to +150 °C, with storage temperature matching this span. Its thermal resistance (RθJA) is 75 °C/W on standard 8 mm × 8 mm copper pads, allowing sustained operation at full derated power in high-ambient environments. The SMCJ14CA-E3/9AT remains fully functional at +150 °C junction temperature, supporting under-hood automotive and industrial motor drive applications.
Does SMCJ14CA-E3/9AT meet AEC-Q101 for automotive use?
The SMCJ14CA-E3/9AT itself is commercial-grade (E3 suffix); however, Vishay offers AEC-Q101-qualified versions under HE3 and HM3 suffixes (e.g., SMCJ14CAHE3_A/I). These variants share identical electrical characteristics and SMC package but undergo additional stress testing per AEC-Q101. For automotive qualification, specify SMCJ14CAHE3_A/I-not SMCJ14CA-E3/9AT-while retaining full pin-and-footprint compatibility.
SMCJ14CA-E3/9AT 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):
- 64.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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 (SMCJ)
SMCJ14CA-E3/9AT FAQ
1.How can I place an order for SMCJ14CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14CA-E3/9AT 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 SMCJ14CA-E3/9AT reliable?
The price and inventory of SMCJ14CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ14CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14CA-E3/9AT?
SMCJ14CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14CA-E3/9AT 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 SMCJ14CA-E3/9AT?
For technical support, including SMCJ14CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ14CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ14CA-E3/9AT 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 SMCJ14CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ14CA-E3/9AT?
All SMCJ14CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14CA-E3/9AT, 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 SMCJ14CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ14CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14CA-E3/9AT Tags
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