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Vishay General Semiconductor - Diodes Division SMCJ14CA-E3/57T
- Part No.:
- SMCJ14CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14CA-E3/57T.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,113
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Product details
Overview
SMCJ14CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 14 V standoff voltage (VWM), 23.2 V maximum clamping voltage (VC) at 64.7 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), making it suitable for protecting automotive sensor interfaces and industrial I/O lines against ESD and load dump.
For engineers reviewing the SMCJ14CA-E3/57T datasheet, SMCJ14CA-E3/57T pinout, SMCJ14CA-E3/57T application, or SMCJ14CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ14CA-E3/57T operates as a silicon avalanche diode with symmetrical breakdown behavior in both directions, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance across temperature (-55 °C to +150 °C).
It delivers sub-nanosecond response time to transients and maintains low incremental surge resistance during 10/1000 µs surges, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead) supporting reliable power dissipation under repeated stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 15.6 V / 17.2 V at 1.0 mA - Verified breakdown threshold range ensures consistent turn-on across production lots. |
| VC @ IPPM | 23.2 V at 64.7 A - Clamped voltage during 1500 W transient; protects downstream ICs rated ≤24 V absolute max. |
| IPPM | 64.7 A - Peak surge current handling capacity under standardized 10/1000 µs waveform. |
| PPPM | 1500 W - Surge power rating determines immunity level against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 events. |
| TJ max | +150 °C - Maximum junction temperature enables operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
Pinout & Package
SMCJ14CA-E3/57T uses a 2-terminal SMC (DO-214AB) package with no polarity marking-consistent with bidirectional construction. Terminals are matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction once VBR is exceeded. |
| Case (body) | Thermal and mechanical interface | Exposed copper pad area (0.31" × 0.31") required for thermal derating; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity constraints. |
| 1500 W peak pulse power | Withstands high-energy transients per ISO 7637-2 and IEC 61000-4-5 without degradation when mounted per recommended pad layout. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking-compatible with standard lead-free SMT processes. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; this E3/57T variant is commercial-grade but shares identical die and construction. |
| Glass-passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground, responding within <1 ns to suppress transients exceeding 14 V. Use Value: Limits voltage seen by downstream op-amps or ADC inputs to ≤23.2 V, preventing latch-up or permanent damage during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, operating in parallel with precision input resistors and filtering capacitors. Use Value: Maintains signal integrity by clamping transients before they reach sensitive instrumentation amplifiers, with <1.0 µA leakage preserving measurement accuracy. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
|
Use Scenario: Shielding Ethernet PHY interfaces and DSL line drivers from lightning-induced surges and cross-talk coupling in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary-level transient suppressor located after primary gas discharge tube (GDT), absorbing residual energy in bidirectional mode. Use Value: Provides precise 23.2 V clamping to protect 24 V tolerant PHY ICs while surviving repeated 1500 W surges per IEC 61000-4-5. |
Use Scenario: Guarding USB-C PD and 12 V/19 V adapter outputs against reverse-polarity misconnection and output capacitor failure events. IC Role / Device Role / Timing Role: Output-side crowbar element that activates only during overvoltage faults, limiting fault voltage to safe levels for connected devices. Use Value: Enables robust adapter design meeting UL 62368-1 fault withstand requirements without adding complex active circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC14-015A | Same VWM (14 V), lower PPPM (600 W), DO-214AA (SMA) package | Lower surge capacity; suited for consumer-grade, non-automotive use with less stringent transient immunity requirements | Select when board space is constrained and 600 W surge rating suffices; not drop-in due to smaller SMA footprint. |
| 1.5KE14CA | Same VWM and bidirectional function, but axial-leaded DO-201AE package, 1500 W rating | Requires through-hole assembly; unsuitable for fully SMT designs or high-density layouts | Choose only for legacy through-hole systems or prototyping where rework flexibility outweighs SMT efficiency. |
Compared with SAC14-015A and 1.5KE14CA, the SMCJ14CA-E3/57T provides identical 14 V standoff and 1500 W surge rating in an SMT-optimized SMC package with MSL Level 1 compliance-making it the preferred choice for automotive and industrial production requiring automated assembly and high-reliability transient immunity.
Availability
SMCJ14CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, telecom line card hardening, and consumer power adapter safety requiring stable component supply and full traceability.
Supply support for SMCJ14CA-E3/57T 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of the SMCJ14CA-E3/57T under maximum surge conditions?
The SMCJ14CA-E3/57T clamps to a maximum of 23.2 V when subjected to its rated 64.7 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 0.31" × 0.31" copper pads per Vishay specification 88394. The clamping voltage remains stable across its operating temperature range, ensuring predictable protection for downstream 24 V-tolerant ICs in the SMCJ14CA-E3/57T application.
Is the SMCJ14CA-E3/57T suitable for automotive applications?
The SMCJ14CA-E3/57T is RoHS-compliant and built on the same die and construction as AEC-Q101 qualified variants (e.g., SMCJ14CAHE3), but this specific E3/57T ordering code is commercial-grade and not certified to AEC-Q101. For production automotive use, specify the HE3 or HM3 suffix. However, the SMCJ14CA-E3/57T retains identical electrical specs-including 1500 W surge rating, -55 °C to +150 °C operating range, and glass-passivated junction-making it viable for non-safety-critical automotive prototypes or aftermarket modules where formal qualification is not mandated.
How does the bidirectional nature of the SMCJ14CA-E3/57T affect PCB layout?
The SMCJ14CA-E3/57T has no polarity marking and functions identically in both directions, eliminating orientation concerns during placement. PCB layout requires symmetric 0.31" × 0.31" copper pads per terminal to ensure proper thermal dissipation and surge current handling. Unlike unidirectional TVS diodes, no cathode band alignment is needed-reducing placement errors and enabling simplified routing for differential or floating signal lines in the SMCJ14CA-E3/57T design.
What is the maximum leakage current of the SMCJ14CA-E3/57T at its standoff voltage?
At its 14 V standoff voltage (VWM), the SMCJ14CA-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at TA = 25 °C. This low leakage preserves signal integrity in high-impedance analog paths and minimizes standby power loss in always-on circuits. Leakage remains below 5.0 µA up to +125 °C, confirming suitability for thermally demanding SMCJ14CA-E3/57T deployments in engine control units or industrial drives.
Can the SMCJ14CA-E3/57T be used in place of a unidirectional TVS like SMCJ14A?
No-the SMCJ14CA-E3/57T is strictly bidirectional and cannot replace unidirectional types such as SMCJ14A in DC-biased circuits where forward conduction must be blocked. While both share identical VWM, VBR, and PPPM, the unidirectional SMCJ14A conducts only in reverse bias and blocks forward current, whereas the SMCJ14CA-E3/57T conducts equally in both directions. Substituting the SMCJ14CA-E3/57T in a unidirectional application risks unintended forward conduction and system malfunction.
SMCJ14CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-E3/57T FAQ
1.How can I place an order for SMCJ14CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14CA-E3/57T 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 SMCJ14CA-E3/57T reliable?
The price and inventory of SMCJ14CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ14CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14CA-E3/57T?
SMCJ14CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14CA-E3/57T 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 SMCJ14CA-E3/57T?
For technical support, including SMCJ14CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ14CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ14CA-E3/57T 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 SMCJ14CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ14CA-E3/57T?
All SMCJ14CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14CA-E3/57T, 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 SMCJ14CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ14CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14CA-E3/57T Tags
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