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Vishay General Semiconductor - Diodes Division SMCJ14CAHE3_A/H
- Part No.:
- SMCJ14CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14CAHE3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,808
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Product details
Overview
SMCJ14CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 23.2 V maximum clamping voltage at 64.7 A IPPM, 14 V standoff voltage, and -55 °C to +150 °C operating junction temperature - deployed on automotive sensor signal lines, industrial I/O ports, and telecom interface protection circuits.
For engineers reviewing the SMCJ14CAHE3_A/H datasheet, SMCJ14CAHE3_A/H pinout, SMCJ14CAHE3_A/H application, or SMCJ14CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W PPPM rating, low 0.087 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The SMCJ14CAHE3_A/H delivers consistent clamping performance across temperature due to its tightly controlled 15.6 V to 17.2 V breakdown voltage range at 1.0 mA test current and minimal thermal resistance (RθJL = 15 °C/W), making it suitable for high-reliability transient suppression where junction heating must be minimized during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal line bias margin. |
| VBR min/max | 15.6 V / 17.2 V at 1.0 mA - Confirmed breakdown threshold range ensuring reliable turn-on under ESD/lightning surges. |
| VC @ IPPM | 23.2 V at 64.7 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| TJ max | +150 °C - Junction temperature limit supporting operation in under-hood automotive and industrial environments. |
| Temp Coeff | 0.087 %/°C - Low VBR drift ensures stable clamping across wide ambient ranges without recalibration. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), with cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for both polarities; no polarity marking required. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; forms dual-junction structure enabling bidirectional clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 4th-level surge immunity (4 kV/2 Ω) without derating on standard PCB layouts. |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without popcorn cracking or delamination in high-volume SMT production. |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over 15+ years in harsh industrial environments. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a). |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching sensitive analog front-ends. Use Value: Maintains signal fidelity with <1.0 μA leakage at 14 V VWM while clamping 64.7 A surges to ≤23.2 V - preventing ADC saturation and microcontroller reset. | Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against induced lightning surges and relay coil flyback in factory automation. IC Role / Device Role / Timing Role: Primary transient suppressor on field-side signal traces, mounted on 8 mm × 8 mm copper pads per terminal per datasheet fig. 2. Use Value: Delivers 1500 W surge handling without external heatsinking, reducing BOM count versus discrete Zener+capacitor solutions. |
| Telecom Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from fast transients on RJ-45 lines in enterprise switches and base stations. IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode chokes to absorb differential-mode surges exceeding choke attenuation. Use Value: 0.087 %/°C VBR tempco ensures stable clamping across -40 °C to +85 °C operating range - critical for outdoor telecom cabinets. | Use Scenario: ESD protection on USB-C and barrel jack inputs of wall adapters subjected to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: First-line defense against 8 kV contact / 15 kV air-gap ESD events per IEC 61000-4-2, placed adjacent to connector. Use Value: Sub-100 ns response time and 23.2 V clamping limit prevent latch-up in downstream AC-DC controllers during repeated ESD strikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CAHE3_A/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Limited to lower-energy surges (IEC 61000-4-2 only); unsuitable for IEC 61000-4-5 Level 3+ | Select when board space is constrained and surge energy does not exceed 400 W. |
| SMCJ14AHE3_A/H | Unidirectional version; includes cathode band marking; identical VWM/VBR/VC but asymmetric conduction | Requires correct polarity placement; not usable on AC-coupled or floating signal lines | Choose only for DC-biased rails where polarity is fixed and reverse conduction is unnecessary. |
Compared with SMAJ14CAHE3_A/H and SMCJ14AHE3_A/H, the SMCJ14CAHE3_A/H uniquely combines bidirectional operation, 1500 W surge capacity, and AEC-Q101 qualification - making it the sole option for automotive-grade, high-energy, polarity-agnostic protection in compact SMC footprint.
Availability
SMCJ14CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom Ethernet PHY protection requiring stable component supply across extended temperature and surge immunity specifications.
Supply support for SMCJ14CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in demanding environments, targeting automotive, industrial, and telecom systems where failure tolerance and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of SMCJ14CAHE3_A/H at its rated peak pulse current?
The SMCJ14CAHE3_A/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 64.7 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the actual voltage seen by downstream circuitry during worst-case surge events - critical for ensuring protected ICs remain within absolute maximum ratings.
Is SMCJ14CAHE3_A/H qualified for automotive use?
Yes, SMCJ14CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet revision 09-Jan-2024. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock - validating suitability for under-hood and chassis-mounted automotive electronics.
How does the bidirectional design of SMCJ14CAHE3_A/H affect PCB layout?
The bidirectional design of SMCJ14CAHE3_A/H eliminates polarity constraints: no cathode band marking is present, and either terminal may connect to line or ground. This simplifies layout for AC-coupled or floating signals (e.g., RS-485, CAN, audio lines), removes risk of reverse installation, and avoids need for orientation-aware pick-and-place programming.
What is the thermal resistance from junction to lead for SMCJ14CAHE3_A/H?
The SMCJ14CAHE3_A/H has a typical thermal resistance from junction to lead (RθJL) of 15 °C/W, per Vishay's thermal characteristics table. This low value enables efficient heat transfer to PCB copper pads, supporting sustained surge duty cycles without thermal runaway - especially important when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads.
Can SMCJ14CAHE3_A/H replace unidirectional SMCJ14AHE3_A/H in existing designs?
No direct replacement is assured: although SMCJ14CAHE3_A/H shares identical VWM (14 V), VBR (15.6–17.2 V), and VC (23.2 V), its bidirectional conduction alters circuit behavior in DC-biased applications. If the original design relies on unidirectional blocking (e.g., reverse-polarity protection), substituting SMCJ14CAHE3_A/H may compromise functionality - validation of signal integrity and surge path symmetry is required.
SMCJ14CAHE3_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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ14CAHE3_A/H FAQ
1.How can I place an order for SMCJ14CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14CAHE3_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 SMCJ14CAHE3_A/H reliable?
The price and inventory of SMCJ14CAHE3_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 SMCJ14CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ14CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14CAHE3_A/H?
SMCJ14CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14CAHE3_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 SMCJ14CAHE3_A/H?
For technical support, including SMCJ14CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ14CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ14CAHE3_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 SMCJ14CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ14CAHE3_A/H?
All SMCJ14CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14CAHE3_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 SMCJ14CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ14CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14CAHE3_A/H Tags
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