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Vishay General Semiconductor - Diodes Division SMCG14CAHE3/57T
- Part No.:
- SMCG14CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG14CAHE3/57T.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,838
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Product details
Overview
SMCG14CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and power lines. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), clamping voltage of 23.2 V at 64.7 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG14CAHE3/57T datasheet, SMCG14CAHE3/57T pinout, SMCG14CAHE3/57T application, or SMCG14CAHE3/57T equivalent, this device is selected for high-reliability transient suppression in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG14CAHE3/57T operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 µA at VWM), while the DO-215AB package supports automated SMT placement and meets UL 94 V-0 flammability rating.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, with derating applied above TA = 25 °C per Fig. 2. It sustains non-repetitive 10/1000 µs surges up to 64.7 A and complies with ANSI/IEEE C62.35 surge standards for protector classification under UL 497B (QVGQ2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 23.2 V at 64.7 A - Clamping voltage under full-rated 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; enables survival of high-energy lightning-induced or ESD events. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - Maximum junction temperature supporting operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with matte tin-plated terminals, compliant with J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2). Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical avalanche junction; conducts during positive overvoltage events. |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical junction; conducts during negative overvoltage events; no band marking for bidirectional types. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity concerns. |
| 1500 W peak pulse rating | Withstands high-energy transients such as ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges when properly mounted. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and infotainment interfaces. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-related delamination risk. |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for safety-critical industrial and transportation equipment enclosures. |
Applications
| Automotive Sensor Protection | Industrial I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: TVS diode placed at connector interface to clamp fast-rising transients before they reach MCU ADC inputs or transceiver pins. Use Value: Limits clamped voltage to 23.2 V, well below typical 36 V absolute maximum ratings of automotive-grade microcontrollers and transceivers. | Use Scenario: Shielding PLC digital input modules from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with upstream fusing and filtering. Use Value: 1500 W rating handles repetitive 1 kV/500 A surges per IEC 61000-4-5, extending system uptime and reducing field failures. |
| Telecom Line Conditioning | Consumer Device Port Protection |
Use Scenario: Safeguarding Ethernet PHY or PoE-powered device ports against lightning-induced common-mode surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS across differential pairs (e.g., TX+/TX−) to suppress mode conversion and protect magnetics and PHY ICs. Use Value: Symmetrical clamping ensures equal protection regardless of surge polarity, preserving signal integrity in full-duplex links. | Use Scenario: Adding surge immunity to USB-C or HDMI ports in premium audio/video equipment exposed to user-handling ESD. IC Role / Device Role / Timing Role: Secondary-level TVS after ESD array, absorbing residual energy that bypasses front-end protection. Use Value: 23.2 V clamping prevents latch-up in 3.3 V/5 V interface ICs while maintaining <1.0 µA leakage for low-power standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA | Same VWM (14 V) and bidirectional function, but lower PPPM (400 W) and higher VC (23.2 V vs. 23.2 V same, but lower IPPM = 17.3 A). | Best suited for lower-energy ESD-only scenarios; insufficient for IEC 61000-4-5 Level 3+ surges. | Select SMAJ14CA only when board space is constrained and surge threat level is limited to human-body-model ESD. |
| SMCJ14CA | Same DO-214AB package footprint but higher PPPM (1500 W identical), slightly higher VBR (15.6–17.2 V same), and identical VC (23.2 V); not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Choose SMCJ14CA for cost-sensitive industrial applications where automotive reliability validation is unnecessary. |
Compared with SMAJ14CA and SMCJ14CA, the SMCG14CAHE3/57T uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and DO-215AB low-profile packaging-making it the only option among the three validated for under-hood automotive deployment with full IEC 61000-4-5 compliance.
Availability
SMCG14CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line conditioning requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCG14CAHE3/57T 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, efficiency, and application-specific optimization.
The SMCG series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1500 W surge handling are mandatory design requirements.
FAQ
What is the clamping voltage of the SMCG14CAHE3/57T under maximum rated surge current?
The SMCG14CAHE3/57T clamps to 23.2 V at its rated peak pulse current of 64.7 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet (Document Number 88457, page 2). The low clamping ratio (VC/VWM ≈ 1.66) ensures effective protection of 24 V and 3.3 V/5 V logic interfaces downstream.
Is the SMCG14CAHE3/57T suitable for automotive applications?
Yes, the SMCG14CAHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, and its thermal performance (TJ max = +150 °C), MSL Level 1 reflow compatibility, and robust surge handling meet requirements for engine control units, ADAS sensors, and body electronics. The SMCG14CAHE3/57T data sheet confirms qualification per test conditions in the AEC standard.
What does the "CA" suffix indicate in SMCG14CAHE3/57T?
The "CA" suffix in SMCG14CAHE3/57T specifies a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMCG14A), the CA version has no polarity marking and is used where AC signals, differential buses, or undefined polarity lines require protection without orientation constraints.
What is the mounting pad layout recommendation for optimal thermal and surge performance of the SMCG14CAHE3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the SMCG14CAHE3/57T to achieve rated 1500 W pulse power and proper thermal dissipation. Deviating from this layout reduces IPPM capability and increases junction temperature rise; the datasheet (Fig. 2 and note on page 2) confirms derating curves assume this pad size.
How does the SMCG14CAHE3/57T differ from the SMCG14A variant?
The SMCG14CAHE3/57T is bidirectional with symmetrical clamping and no polarity marking, whereas SMCG14A is unidirectional with a cathode band and supports forward conduction (IFSM = 200 A). The SMCG14CAHE3/57T has identical VWM (14 V) and PPPM (1500 W) but differs in polarity behavior, making it suitable for AC/differential lines, while SMCG14A is intended for DC power rail protection with defined anode/cathode orientation.
SMCG14CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- 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 (SMCG)
SMCG14CAHE3/57T FAQ
1.How can I place an order for SMCG14CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG14CAHE3/57T 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 SMCG14CAHE3/57T reliable?
The price and inventory of SMCG14CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG14CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG14CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG14CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG14CAHE3/57T?
SMCG14CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG14CAHE3/57T 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 SMCG14CAHE3/57T?
For technical support, including SMCG14CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG14CAHE3/57T requirements.
6.How does Aetrix verify that SMCG14CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG14CAHE3/57T 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 SMCG14CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG14CAHE3/57T?
All SMCG14CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG14CAHE3/57T, 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 SMCG14CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG14CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG14CAHE3/57T Tags
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